# Pd–Y phases > Pd–Y system: 15 phases (tier A 7, tier B 1, tier C 2, liquid 1, needs_review 4); 15 stable in a calculated diagram in the ORCHID phase registry, with names, structure type when the stored evidence supports an assignment under the stated tier rules, calculated stability, verbatim TDB PHASE/CONSTITUENT statements and example references. HTML: https://data.orchid-project.org/phases/pages/PD-Y.html · Markdown: https://data.orchid-project.org/phases/pages/PD-Y.md 15 phases (tier A 7, tier B 1, tier C 2, liquid 1, needs_review 4); 15 stable in a calculated diagram. Structure types are assigned only when the stored evidence supports an assignment under the stated tier rules (tier A: standard phase name; tier B: unique Materials Project + OQMD on-hull match, DFT-supported; tier C: one structure stated by the assessment's crystallographic table, assessor-stated); other phases list candidates and are marked needs_review. Stability is from phase diagrams calculated with pycalphad from the SGTE binary collection (evidence class: model). Data: [interactive registry](https://orchid-project.org/phases/?q=PD-Y) · [full JSON](https://data.orchid-project.org/phases/systems/PD-Y.json) · [Pd–Y system page](https://data.orchid-project.org/systems/PD-Y.html) · [Markdown](https://data.orchid-project.org/phases/pages/PD-Y.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md) Table: Phases of the Pd–Y system (15) | Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models | |---|---|---|---|---:|---:| | [BCC_A2](#phase-pd-y-bcc-a2); _phase:pd-y:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 1751.15–2499.9 K, x(Y) 1–1 | 2 | 1 | | [FCC_A1](#phase-pd-y-fcc-a1); _phase:pd-y:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1829 K, x(Y) 0–0.12567 | 4 | 1 | | [HCP_A3](#phase-pd-y-hcp-a3); _phase:pd-y:hcp-a3_ | Mg · A3 · hP2 · P6_3/mmc (194) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1751.15 K, x(Y) 1–1 | 4 | 1 | | [LIQUID](#phase-pd-y-liquid); _phase:pd-y:liquid_ | liquid | liquid | stable in 1 of 1 calculated diagram(s): 1181.97–2500 K, x(Y) 0–1 | 28 | 1 | | [PD2Y](#phase-pd-y-pd2y); _phase:pd-y:pd2y_ | | needs_review | stable in 1 of 1 calculated diagram(s): 300–1577.1 K, x(Y) 0.33333–0.33333 | 7 | 1 | | [PD2Y3](#phase-pd-y-pd2y3); _phase:pd-y:pd2y3_ | Er3Ni2 · hR15 · R-3 (148) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–1232.82 K, x(Y) 0.6–0.6 | 6 | 1 | | [PD2Y5](#phase-pd-y-pd2y5); _phase:pd-y:pd2y5_ | Dy5Pd2 · cF144 · Fd-3m (227) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–1186.04 K, x(Y) 0.71429–0.71429 | 9 | 1 | | [PD3Y_L12](#phase-pd-y-pd3y-l12); _phase:pd-y:pd3y-l12_ | AuCu3 · L1_2 · cP4 · Pm-3m (221) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1972.1 K, x(Y) 0.20315–0.25 | 8 | 1 | | [PD3Y2_HT](#phase-pd-y-pd3y2-ht); _phase:pd-y:pd3y2-ht_ | | needs_review | stable in 1 of 1 calculated diagram(s): 1317.74–1546.25 K, x(Y) 0.4–0.4 | 6 | 1 | | [PD3Y2_LT](#phase-pd-y-pd3y2-lt); _phase:pd-y:pd3y2-lt_ | | needs_review | stable in 1 of 1 calculated diagram(s): 300–1317.74 K, x(Y) 0.4–0.4 | 2 | 1 | | [PD4Y3](#phase-pd-y-pd4y3); _phase:pd-y:pd4y3_ | Pd4Pu3 · hR14 · R-3 (148) | tier B: DFT-supported (unique MP + OQMD match) | stable in 1 of 1 calculated diagram(s): 300–1682 K, x(Y) 0.42857–0.42857 | 11 | 1 | | [PD7Y](#phase-pd-y-pd7y); _phase:pd-y:pd7y_ | | needs_review | stable in 1 of 1 calculated diagram(s): 300–777.05 K, x(Y) 0.125–0.125 | 5 | 1 | | [PDY_B2](#phase-pd-y-pdy-b2); _phase:pd-y:pdy-b2_ | CsCl · B2 · cP2 · Pm-3m (221) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 1143.46–1722.54 K, x(Y) 0.5–0.5016 | 10 | 1 | | [PDY_B33](#phase-pd-y-pdy-b33); _phase:pd-y:pdy-b33_ | CrB · B33 · oC8 · Cmcm (63) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1173.65 K, x(Y) 0.5–0.50099 | 4 | 1 | | [PDY3_D011](#phase-pd-y-pdy3-d011); _phase:pd-y:pdy3-d011_ | Fe3C · D0_11 · oP16 · Pnma (62) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1182.99 K, x(Y) 0.75–0.75 | 4 | 1 | ## BCC_A2 (Pd–Y) - Id: `phase:pd-y:bcc-a2`; status `assigned` - Structure: W · A2 · cI2 · Im-3m (229); type `st:a2-w-ci2`; tier A: standard phase name; confidence high - Stability: stable in 1 of 1 calculated diagram(s): 1751.15–2499.9 K, x(Y) 1–1 - Literature: 2 values (2 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-y:bcc-a2) Names (3): _corpus: _corpus:phase:pd-y:bcc-a2 _paper: _paper:10.1016/s0925-8388(99)00582-4:b.c.c.(Y) _tdb: _tdb:PdY-00Du.tdb:BCC_A2 ### TDB models of BCC_A2 (1): PHASE and CONSTITUENT statements as written [PdY-00Du.tdb](https://orchid-project.org/data/databases/sgte-binary/PdY-00Du.tdb): BCC_A2, type code %B, sha256 `d90b41729a78d724…` ~~~~text 37: PHASE BCC_A2 %B 2 1 3 ! 38: CONST BCC_A2 : PD Y% : VA : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/S0925-8388(99)00582-4](https://doi.org/10.1016/S0925-8388%2899%2900582-4) Z. Du, H. Yang, C. Li, J. Alloys Compd., 297, 185-91(2000). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/0022-5088(73)90006-4](https://doi.org/10.1016/0022-5088%2873%2990006-4) O Loebich, E Raub, Die Legierungen des Palladiums mit Yttrium, Samarium, Gadolinium, Dysprosium, Holmium und Erbium, Journal of the Less Common Metals 30, 47-62 (1973). _cited as the source of values for this phase_ ## FCC_A1 (Pd–Y) - Id: `phase:pd-y:fcc-a1`; status `assigned` - Structure: Cu · A1 · cF4 · Fm-3m (225); type `st:a1-cu-cf4`; tier A: standard phase name; confidence high - Stability: stable in 1 of 1 calculated diagram(s): 300–1829 K, x(Y) 0–0.12567 - Literature: 4 values (4 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-y:fcc-a1) Names (4): _corpus: _corpus:phase:pd-y:fcc-a1 _paper: _paper:10.1016/s0925-8388(99)00582-4:F.c.c.(Pd), paper:10.1016/s0925-8388(99)00582-4:f.c.c.(Pd) _tdb: _tdb:PdY-00Du.tdb:FCC_A1 ### TDB models of FCC_A1 (1): PHASE and CONSTITUENT statements as written [PdY-00Du.tdb](https://orchid-project.org/data/databases/sgte-binary/PdY-00Du.tdb): FCC_A1, type code %A, sha256 `d90b41729a78d724…` ~~~~text 32: PHASE FCC_A1 %A 2 1 1 ! 33: CONST FCC_A1 : PD% Y : VA : ! ~~~~ Example references (3 of 3; assessments first): - [doi:10.1016/S0925-8388(99)00582-4](https://doi.org/10.1016/S0925-8388%2899%2900582-4) Z. Du, H. Yang, C. Li, J. Alloys Compd., 297, 185-91(2000). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/0022-5088(73)90006-4](https://doi.org/10.1016/0022-5088%2873%2990006-4) O Loebich, E Raub, Die Legierungen des Palladiums mit Yttrium, Samarium, Gadolinium, Dysprosium, Holmium und Erbium, Journal of the Less Common Metals 30, 47-62 (1973). _cited as the source of values for this phase_ - [doi:10.1016/0022-5088(89)90076-3](https://doi.org/10.1016/0022-5088%2889%2990076-3) K. Takao, Y. Sakamoto, M. Yoshida, Ted B. Flanagan, Order-disorder transitions of the Pd7Dy(Y) phase in Pd-Dy(Y) alloys, Journal of the Less Common Metals 152, 115-125 (1989). _cited as the source of values for this phase_ ## HCP_A3 (Pd–Y) - Id: `phase:pd-y:hcp-a3`; status `assigned` - Structure: Mg · A3 · hP2 · P6_3/mmc (194); type `st:a3-mg-hp2`; tier A: standard phase name; confidence high - Stability: stable in 1 of 1 calculated diagram(s): 300–1751.15 K, x(Y) 1–1 - Literature: 4 values (4 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-y:hcp-a3) Names (3): _corpus: _corpus:phase:pd-y:hcp-a3 _paper: _paper:10.1016/s0925-8388(99)00582-4:h.c.p.(Y) _tdb: _tdb:PdY-00Du.tdb:HCP_A3 ### TDB models of HCP_A3 (1): PHASE and CONSTITUENT statements as written [PdY-00Du.tdb](https://orchid-project.org/data/databases/sgte-binary/PdY-00Du.tdb): HCP_A3, type code %A, sha256 `d90b41729a78d724…` ~~~~text 42: PHASE HCP_A3 %A 2 1 0.5 ! 43: CONST HCP_A3 : PD Y% : VA : ! ~~~~ Example references (3 of 3; assessments first): - [doi:10.1016/S0925-8388(99)00582-4](https://doi.org/10.1016/S0925-8388%2899%2900582-4) Z. Du, H. Yang, C. Li, J. Alloys Compd., 297, 185-91(2000). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/0022-5088(73)90006-4](https://doi.org/10.1016/0022-5088%2873%2990006-4) O Loebich, E Raub, Die Legierungen des Palladiums mit Yttrium, Samarium, Gadolinium, Dysprosium, Holmium und Erbium, Journal of the Less Common Metals 30, 47-62 (1973). _cited as the source of values for this phase_ - [doi:10.1016/0022-5088(85)90271-1](https://doi.org/10.1016/0022-5088%2885%2990271-1) R. Kuentzler, O. Loebich, Electronic properties and stability of the ordered Pd-Y alloys, Journal of the Less Common Metals 106, 335-348 (1985). _cited as the source of values for this phase_ ## LIQUID (Pd–Y) - Id: `phase:pd-y:liquid`; status `assigned` - Structure: liquid; type `st:liquid`; liquid; confidence high - Stability: stable in 1 of 1 calculated diagram(s): 1181.97–2500 K, x(Y) 0–1 - Literature: 28 values (28 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-y:liquid) Names (3): _corpus: _corpus:phase:pd-y:liquid _paper: _paper:10.1016/s0925-8388(99)00582-4:Liq. _tdb: _tdb:PdY-00Du.tdb:LIQUID ### TDB models of LIQUID (1): PHASE and CONSTITUENT statements as written [PdY-00Du.tdb](https://orchid-project.org/data/databases/sgte-binary/PdY-00Du.tdb): LIQUID, type code %, sha256 `d90b41729a78d724…` ~~~~text 27: PHASE LIQUID:L % 1 1 ! 28: CONST LIQUID:L : PD Y : ! ~~~~ Example references (3 of 3; assessments first): - [doi:10.1016/S0925-8388(99)00582-4](https://doi.org/10.1016/S0925-8388%2899%2900582-4) Z. Du, H. Yang, C. Li, J. Alloys Compd., 297, 185-91(2000). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/0022-5088(73)90006-4](https://doi.org/10.1016/0022-5088%2873%2990006-4) O Loebich, E Raub, Die Legierungen des Palladiums mit Yttrium, Samarium, Gadolinium, Dysprosium, Holmium und Erbium, Journal of the Less Common Metals 30, 47-62 (1973). _cited as the source of values for this phase_ - [doi:10.1016/0022-5088(85)90271-1](https://doi.org/10.1016/0022-5088%2885%2990271-1) R. Kuentzler, O. Loebich, Electronic properties and stability of the ordered Pd-Y alloys, Journal of the Less Common Metals 106, 335-348 (1985). _cited as the source of values for this phase_ ## PD2Y (Pd–Y) - Id: `phase:pd-y:pd2y`; status `needs_review` - No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete - Candidate (literature_printed): (Pd2Y) · ? — printed with a label mapped to this phase - Candidate (sgte_mmc2): (Pd2Y) — Hallstedt 2025 mmc2 row for PD2Y: Pd2Y - Stoichiometry: Pd 0.6667, Y 0.3333 - Stability: stable in 1 of 1 calculated diagram(s): 300–1577.1 K, x(Y) 0.33333–0.33333 - Literature: 7 values (7 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-y:pd2y) Names (4): _corpus: _corpus:phase:pd-y:pd2y _paper: _paper:10.1016/j.matpr.2019.08.196:Pd2Y, paper:10.1016/s0925-8388(99)00582-4:Pd2Y _tdb: _tdb:PdY-00Du.tdb:PD2Y ### TDB models of PD2Y (1): PHASE and CONSTITUENT statements as written [PdY-00Du.tdb](https://orchid-project.org/data/databases/sgte-binary/PdY-00Du.tdb): PD2Y, type code %, sha256 `d90b41729a78d724…` ~~~~text 57: PHASE PD2Y % 2 2 1 ! 58: CONST PD2Y : PD : Y : ! ~~~~ Example references (4 of 4; assessments first): - [doi:10.1016/S0925-8388(99)00582-4](https://doi.org/10.1016/S0925-8388%2899%2900582-4) Z. Du, H. Yang, C. Li, J. Alloys Compd., 297, 185-91(2000). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/j.matpr.2019.08.196](https://doi.org/10.1016/j.matpr.2019.08.196) Said Kardellass, Colette Servant, Isabelle Drouelle, Fatima Zahra Chrifi-Alaoui, Mohamed Idbenali, Alyen Abahazem et al., Calphad-type assessment of the Pd-Yb binary system supported by first-principles calculations – Part II: Results, Materials Today: Proceedings 24, 140-150 (2020). _reports values for this phase_ - [doi:10.1016/s0925-8388(00)01144-0](https://doi.org/10.1016/s0925-8388%2800%2901144-0) Zhenmin Du, Haifang Yang, Thermodynamic assessment of the Gd–Pd system, Journal of Alloys and Compounds 312, 181-188 (2000). _cited as the source of values for this phase_ - [doi:10.1016/0022-5088(73)90006-4](https://doi.org/10.1016/0022-5088%2873%2990006-4) O Loebich, E Raub, Die Legierungen des Palladiums mit Yttrium, Samarium, Gadolinium, Dysprosium, Holmium und Erbium, Journal of the Less Common Metals 30, 47-62 (1973). _cited as the source of values for this phase_ ## PD2Y3 (Pd–Y) - Id: `phase:pd-y:pd2y3`; status `assigned` - Structure: Er3Ni2 · hR15 · R-3 (148); type `st:er3ni2-hr15`; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated - Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) [doi:10.1016/j.calphad.2025.102833](https://doi.org/10.1016/j.calphad.2025.102833) - Caveat: not certain from the name or DFT alone (no_on_hull_entry_in_both, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system - Stoichiometry: Pd 0.4000, Y 0.6000 - Stability: stable in 1 of 1 calculated diagram(s): 300–1232.82 K, x(Y) 0.6–0.6 - Literature: 6 values (6 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-y:pd2y3) Names (3): _corpus: _corpus:phase:pd-y:pd2y3 _paper: _paper:10.1016/s0925-8388(99)00582-4:Pd2Y3 _tdb: _tdb:PdY-00Du.tdb:PD2Y3 ### TDB models of PD2Y3 (1): PHASE and CONSTITUENT statements as written [PdY-00Du.tdb](https://orchid-project.org/data/databases/sgte-binary/PdY-00Du.tdb): PD2Y3, type code %, sha256 `d90b41729a78d724…` ~~~~text 87: PHASE PD2Y3 % 2 2 3 ! 88: CONST PD2Y3 : PD : Y : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/S0925-8388(99)00582-4](https://doi.org/10.1016/S0925-8388%2899%2900582-4) Z. Du, H. Yang, C. Li, J. Alloys Compd., 297, 185-91(2000). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/0022-5088(73)90006-4](https://doi.org/10.1016/0022-5088%2873%2990006-4) O Loebich, E Raub, Die Legierungen des Palladiums mit Yttrium, Samarium, Gadolinium, Dysprosium, Holmium und Erbium, Journal of the Less Common Metals 30, 47-62 (1973). _cited as the source of values for this phase_ ## PD2Y5 (Pd–Y) - Id: `phase:pd-y:pd2y5`; status `assigned` - Structure: Dy5Pd2 · cF144 · Fd-3m (227); type `st:dy5pd2-cf144`; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated - Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) [doi:10.1016/j.calphad.2025.102833](https://doi.org/10.1016/j.calphad.2025.102833) - Caveat: not certain from the name or DFT alone (no_on_hull_entry_in_both, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system - Stoichiometry: Pd 0.2857, Y 0.7143 - Stability: stable in 1 of 1 calculated diagram(s): 300–1186.04 K, x(Y) 0.71429–0.71429 - Literature: 9 values (9 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-y:pd2y5) Names (4): _corpus: _corpus:phase:pd-y:pd2y5 _paper: _paper:10.1016/j.matpr.2019.08.196:Pd2Y5, paper:10.1016/s0925-8388(99)00582-4:Pd2Y5 _tdb: _tdb:PdY-00Du.tdb:PD2Y5 ### TDB models of PD2Y5 (1): PHASE and CONSTITUENT statements as written [PdY-00Du.tdb](https://orchid-project.org/data/databases/sgte-binary/PdY-00Du.tdb): PD2Y5, type code %, sha256 `d90b41729a78d724…` ~~~~text 92: PHASE PD2Y5 % 2 2 5 ! 93: CONST PD2Y5 : PD : Y : ! ~~~~ Example references (5 of 5; assessments first): - [doi:10.1016/S0925-8388(99)00582-4](https://doi.org/10.1016/S0925-8388%2899%2900582-4) Z. Du, H. Yang, C. Li, J. Alloys Compd., 297, 185-91(2000). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/0022-5088(73)90006-4](https://doi.org/10.1016/0022-5088%2873%2990006-4) O Loebich, E Raub, Die Legierungen des Palladiums mit Yttrium, Samarium, Gadolinium, Dysprosium, Holmium und Erbium, Journal of the Less Common Metals 30, 47-62 (1973). _cited as the source of values for this phase_ - [doi:10.1016/j.matpr.2019.08.196](https://doi.org/10.1016/j.matpr.2019.08.196) Said Kardellass, Colette Servant, Isabelle Drouelle, Fatima Zahra Chrifi-Alaoui, Mohamed Idbenali, Alyen Abahazem et al., Calphad-type assessment of the Pd-Yb binary system supported by first-principles calculations – Part II: Results, Materials Today: Proceedings 24, 140-150 (2020). _reports values for this phase_ - [doi:10.1016/s0925-8388(00)01144-0](https://doi.org/10.1016/s0925-8388%2800%2901144-0) Zhenmin Du, Haifang Yang, Thermodynamic assessment of the Gd–Pd system, Journal of Alloys and Compounds 312, 181-188 (2000). _cited as the source of values for this phase_ - [doi:10.1016/0022-5088(85)90271-1](https://doi.org/10.1016/0022-5088%2885%2990271-1) R. Kuentzler, O. Loebich, Electronic properties and stability of the ordered Pd-Y alloys, Journal of the Less Common Metals 106, 335-348 (1985). _cited as the source of values for this phase_ ## PD3Y_L12 (Pd–Y) - Id: `phase:pd-y:pd3y-l12`; status `assigned` - Structure: AuCu3 · L1_2 · cP4 · Pm-3m (221); type `st:l1-2-aucu3-cp4`; tier A: standard phase name; confidence high - Stability: stable in 1 of 1 calculated diagram(s): 300–1972.1 K, x(Y) 0.20315–0.25 - Literature: 8 values (8 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-y:pd3y-l12) Names (3): _corpus: _corpus:phase:pd-y:pd3y-l12 _paper: _paper:10.1016/s0925-8388(99)00582-4:Pd3Y _tdb: _tdb:PdY-00Du.tdb:PD3Y_L12 ### TDB models of PD3Y_L12 (1): PHASE and CONSTITUENT statements as written [PdY-00Du.tdb](https://orchid-project.org/data/databases/sgte-binary/PdY-00Du.tdb): PD3Y_L12, type code %, sha256 `d90b41729a78d724…` ~~~~text 52: PHASE PD3Y_L12 % 2 3 1 ! 53: CONST PD3Y_L12 : PD : PD Y% : ! ~~~~ Example references (3 of 3; assessments first): - [doi:10.1016/S0925-8388(99)00582-4](https://doi.org/10.1016/S0925-8388%2899%2900582-4) Z. Du, H. Yang, C. Li, J. Alloys Compd., 297, 185-91(2000). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/0022-5088(73)90006-4](https://doi.org/10.1016/0022-5088%2873%2990006-4) O Loebich, E Raub, Die Legierungen des Palladiums mit Yttrium, Samarium, Gadolinium, Dysprosium, Holmium und Erbium, Journal of the Less Common Metals 30, 47-62 (1973). _cited as the source of values for this phase_ - [doi:10.1016/0022-5088(89)90076-3](https://doi.org/10.1016/0022-5088%2889%2990076-3) K. Takao, Y. Sakamoto, M. Yoshida, Ted B. Flanagan, Order-disorder transitions of the Pd7Dy(Y) phase in Pd-Dy(Y) alloys, Journal of the Less Common Metals 152, 115-125 (1989). _cited as the source of values for this phase_ ## PD3Y2_HT (Pd–Y) - Id: `phase:pd-y:pd3y2-ht`; status `needs_review` - No structure assigned. Why: no_structure_token; polymorph_family:other phases of this system have the same composition - Candidate (sgte_mmc2): (Pd3Y2-HT) — Hallstedt 2025 mmc2 row for PD3Y2_HT: Pd3Y2-HT - Stoichiometry: Pd 0.6000, Y 0.4000 - Stability: stable in 1 of 1 calculated diagram(s): 1317.74–1546.25 K, x(Y) 0.4–0.4 - Literature: 6 values (6 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-y:pd3y2-ht) Names (3): _corpus: _corpus:phase:pd-y:pd3y2-ht _paper: _paper:10.1016/s0925-8388(99)00582-4:βPd3Y2 _tdb: _tdb:PdY-00Du.tdb:PD3Y2_HT ### TDB models of PD3Y2_HT (1): PHASE and CONSTITUENT statements as written [PdY-00Du.tdb](https://orchid-project.org/data/databases/sgte-binary/PdY-00Du.tdb): PD3Y2_HT, type code %, sha256 `d90b41729a78d724…` ~~~~text 67: PHASE PD3Y2_HT % 2 3 2 ! 68: CONST PD3Y2_HT : PD : Y : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/S0925-8388(99)00582-4](https://doi.org/10.1016/S0925-8388%2899%2900582-4) Z. Du, H. Yang, C. Li, J. Alloys Compd., 297, 185-91(2000). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/0022-5088(73)90006-4](https://doi.org/10.1016/0022-5088%2873%2990006-4) O Loebich, E Raub, Die Legierungen des Palladiums mit Yttrium, Samarium, Gadolinium, Dysprosium, Holmium und Erbium, Journal of the Less Common Metals 30, 47-62 (1973). _cited as the source of values for this phase_ ## PD3Y2_LT (Pd–Y) - Id: `phase:pd-y:pd3y2-lt`; status `needs_review` - No structure assigned. Why: no_structure_token; polymorph_family:other phases of this system have the same composition - Candidate (sgte_mmc2): (Pd3Y2-LT) — Hallstedt 2025 mmc2 row for PD3Y2_LT: Pd3Y2-LT - Stoichiometry: Pd 0.6000, Y 0.4000 - Stability: stable in 1 of 1 calculated diagram(s): 300–1317.74 K, x(Y) 0.4–0.4 - Literature: 2 values (2 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-y:pd3y2-lt) Names (3): _corpus: _corpus:phase:pd-y:pd3y2-lt _paper: _paper:10.1016/s0925-8388(99)00582-4:αPd3Y2 _tdb: _tdb:PdY-00Du.tdb:PD3Y2_LT ### TDB models of PD3Y2_LT (1): PHASE and CONSTITUENT statements as written [PdY-00Du.tdb](https://orchid-project.org/data/databases/sgte-binary/PdY-00Du.tdb): PD3Y2_LT, type code %, sha256 `d90b41729a78d724…` ~~~~text 62: PHASE PD3Y2_LT % 2 3 2 ! 63: CONST PD3Y2_LT : PD : Y : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/S0925-8388(99)00582-4](https://doi.org/10.1016/S0925-8388%2899%2900582-4) Z. Du, H. Yang, C. Li, J. Alloys Compd., 297, 185-91(2000). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/0022-5088(73)90006-4](https://doi.org/10.1016/0022-5088%2873%2990006-4) O Loebich, E Raub, Die Legierungen des Palladiums mit Yttrium, Samarium, Gadolinium, Dysprosium, Holmium und Erbium, Journal of the Less Common Metals 30, 47-62 (1973). _cited as the source of values for this phase_ ## PD4Y3 (Pd–Y) - Id: `phase:pd-y:pd4y3`; status `assigned` - Structure: Pd4Pu3 · hR14 · R-3 (148); type `st:pd4pu3-hr14`; tier B: DFT-supported (unique MP + OQMD match); confidence high - Stoichiometry: Pd 0.5714, Y 0.4286 - Stability: stable in 1 of 1 calculated diagram(s): 300–1682 K, x(Y) 0.42857–0.42857 - Literature: 11 values (11 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-y:pd4y3) Names (6): _corpus: _corpus:phase:pd-y:pd4y3 _mp: _mp:mp-aaackveh _oqmd: _oqmd:oqmd-1437089 _paper: _paper:10.1016/j.matpr.2019.08.196:Pd4Y3, paper:10.1016/s0925-8388(99)00582-4:Pd4Y3 _tdb: _tdb:PdY-00Du.tdb:PD4Y3 ### TDB models of PD4Y3 (1): PHASE and CONSTITUENT statements as written [PdY-00Du.tdb](https://orchid-project.org/data/databases/sgte-binary/PdY-00Du.tdb): PD4Y3, type code %, sha256 `d90b41729a78d724…` ~~~~text 72: PHASE PD4Y3 % 2 4 3 ! 73: CONST PD4Y3 : PD : Y : ! ~~~~ Example references (4 of 4; assessments first): - [doi:10.1016/S0925-8388(99)00582-4](https://doi.org/10.1016/S0925-8388%2899%2900582-4) Z. Du, H. Yang, C. Li, J. Alloys Compd., 297, 185-91(2000). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/0022-5088(73)90006-4](https://doi.org/10.1016/0022-5088%2873%2990006-4) O Loebich, E Raub, Die Legierungen des Palladiums mit Yttrium, Samarium, Gadolinium, Dysprosium, Holmium und Erbium, Journal of the Less Common Metals 30, 47-62 (1973). _cited as the source of values for this phase_ - [doi:10.1016/j.matpr.2019.08.196](https://doi.org/10.1016/j.matpr.2019.08.196) Said Kardellass, Colette Servant, Isabelle Drouelle, Fatima Zahra Chrifi-Alaoui, Mohamed Idbenali, Alyen Abahazem et al., Calphad-type assessment of the Pd-Yb binary system supported by first-principles calculations – Part II: Results, Materials Today: Proceedings 24, 140-150 (2020). _reports values for this phase_ - [doi:10.1016/s0925-8388(00)01144-0](https://doi.org/10.1016/s0925-8388%2800%2901144-0) Zhenmin Du, Haifang Yang, Thermodynamic assessment of the Gd–Pd system, Journal of Alloys and Compounds 312, 181-188 (2000). _cited as the source of values for this phase_ ## PD7Y (Pd–Y) - Id: `phase:pd-y:pd7y`; status `needs_review` - No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete - Candidate (literature_printed): (Pd7Y) · ? — printed with a label mapped to this phase - Candidate (sgte_mmc2): (Pd7Y) — Hallstedt 2025 mmc2 row for PD7Y: Pd7Y - Stoichiometry: Pd 0.8750, Y 0.1250 - Stability: stable in 1 of 1 calculated diagram(s): 300–777.05 K, x(Y) 0.125–0.125 - Literature: 5 values (5 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-y:pd7y) Names (4): _corpus: _corpus:phase:pd-y:pd7y _paper: _paper:10.1016/j.matpr.2019.08.196:Pd7Y, paper:10.1016/s0925-8388(99)00582-4:Pd7Y _tdb: _tdb:PdY-00Du.tdb:PD7Y ### TDB models of PD7Y (1): PHASE and CONSTITUENT statements as written [PdY-00Du.tdb](https://orchid-project.org/data/databases/sgte-binary/PdY-00Du.tdb): PD7Y, type code %, sha256 `d90b41729a78d724…` ~~~~text 47: PHASE PD7Y % 2 7 1 ! 48: CONST PD7Y : PD : Y : ! ~~~~ Example references (5 of 5; assessments first): - [doi:10.1016/S0925-8388(99)00582-4](https://doi.org/10.1016/S0925-8388%2899%2900582-4) Z. Du, H. Yang, C. Li, J. Alloys Compd., 297, 185-91(2000). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/j.matpr.2019.08.196](https://doi.org/10.1016/j.matpr.2019.08.196) Said Kardellass, Colette Servant, Isabelle Drouelle, Fatima Zahra Chrifi-Alaoui, Mohamed Idbenali, Alyen Abahazem et al., Calphad-type assessment of the Pd-Yb binary system supported by first-principles calculations – Part II: Results, Materials Today: Proceedings 24, 140-150 (2020). _reports values for this phase_ - [doi:10.1016/s0925-8388(00)01144-0](https://doi.org/10.1016/s0925-8388%2800%2901144-0) Zhenmin Du, Haifang Yang, Thermodynamic assessment of the Gd–Pd system, Journal of Alloys and Compounds 312, 181-188 (2000). _cited as the source of values for this phase_ - [doi:10.1016/0022-5088(73)90006-4](https://doi.org/10.1016/0022-5088%2873%2990006-4) O Loebich, E Raub, Die Legierungen des Palladiums mit Yttrium, Samarium, Gadolinium, Dysprosium, Holmium und Erbium, Journal of the Less Common Metals 30, 47-62 (1973). _cited as the source of values for this phase_ - [doi:10.1016/0022-5088(89)90076-3](https://doi.org/10.1016/0022-5088%2889%2990076-3) K. Takao, Y. Sakamoto, M. Yoshida, Ted B. Flanagan, Order-disorder transitions of the Pd7Dy(Y) phase in Pd-Dy(Y) alloys, Journal of the Less Common Metals 152, 115-125 (1989). _cited as the source of values for this phase_ ## PDY_B2 (Pd–Y) - Id: `phase:pd-y:pdy-b2`; status `assigned` - Structure: CsCl · B2 · cP2 · Pm-3m (221); type `st:b2-cscl-cp2`; tier A: standard phase name; confidence high - Stability: stable in 1 of 1 calculated diagram(s): 1143.46–1722.54 K, x(Y) 0.5–0.5016 - Literature: 10 values (10 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-y:pdy-b2) Names (3): _corpus: _corpus:phase:pd-y:pdy-b2 _paper: _paper:10.1016/s0925-8388(99)00582-4:βPdY _tdb: _tdb:PdY-00Du.tdb:PDY_B2 ### TDB models of PDY_B2 (1): PHASE and CONSTITUENT statements as written [PdY-00Du.tdb](https://orchid-project.org/data/databases/sgte-binary/PdY-00Du.tdb): PDY_B2, type code %, sha256 `d90b41729a78d724…` ~~~~text 82: PHASE PDY_B2 % 2 1 1 ! 83: CONST PDY_B2 : PD% Y : Y : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/S0925-8388(99)00582-4](https://doi.org/10.1016/S0925-8388%2899%2900582-4) Z. Du, H. Yang, C. Li, J. Alloys Compd., 297, 185-91(2000). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/0022-5088(73)90006-4](https://doi.org/10.1016/0022-5088%2873%2990006-4) O Loebich, E Raub, Die Legierungen des Palladiums mit Yttrium, Samarium, Gadolinium, Dysprosium, Holmium und Erbium, Journal of the Less Common Metals 30, 47-62 (1973). _cited as the source of values for this phase_ ## PDY_B33 (Pd–Y) - Id: `phase:pd-y:pdy-b33`; status `assigned` - Structure: CrB · B33 · oC8 · Cmcm (63); type `st:b33-crb-oc8`; tier A: standard phase name; confidence high - Stability: stable in 1 of 1 calculated diagram(s): 300–1173.65 K, x(Y) 0.5–0.50099 - Literature: 4 values (4 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-y:pdy-b33) Names (3): _corpus: _corpus:phase:pd-y:pdy-b33 _paper: _paper:10.1016/s0925-8388(99)00582-4:αPdY _tdb: _tdb:PdY-00Du.tdb:PDY_B33 ### TDB models of PDY_B33 (1): PHASE and CONSTITUENT statements as written [PdY-00Du.tdb](https://orchid-project.org/data/databases/sgte-binary/PdY-00Du.tdb): PDY_B33, type code %, sha256 `d90b41729a78d724…` ~~~~text 77: PHASE PDY_B33 % 2 1 1 ! 78: CONST PDY_B33 : PD% Y : Y : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/S0925-8388(99)00582-4](https://doi.org/10.1016/S0925-8388%2899%2900582-4) Z. Du, H. Yang, C. Li, J. Alloys Compd., 297, 185-91(2000). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/0022-5088(73)90006-4](https://doi.org/10.1016/0022-5088%2873%2990006-4) O Loebich, E Raub, Die Legierungen des Palladiums mit Yttrium, Samarium, Gadolinium, Dysprosium, Holmium und Erbium, Journal of the Less Common Metals 30, 47-62 (1973). _cited as the source of values for this phase_ ## PDY3_D011 (Pd–Y) - Id: `phase:pd-y:pdy3-d011`; status `assigned` - Structure: Fe3C · D0_11 · oP16 · Pnma (62); type `st:d0-11-fe3c-op16`; tier A: standard phase name; confidence high - Caveat: DFT agrees: on-hull mp-aaacqsqz and oqmd-1437344, space group 62 - Stoichiometry: Pd 0.2500, Y 0.7500 - Stability: stable in 1 of 1 calculated diagram(s): 300–1182.99 K, x(Y) 0.75–0.75 - Literature: 4 values (4 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-y:pdy3-d011) Names (5): _corpus: _corpus:phase:pd-y:pdy3-d011 _mp: _mp:mp-aaacqsqz _oqmd: _oqmd:oqmd-1437344 _paper: _paper:10.1016/s0925-8388(99)00582-4:PdY3 _tdb: _tdb:PdY-00Du.tdb:PDY3_D011 ### TDB models of PDY3_D011 (1): PHASE and CONSTITUENT statements as written [PdY-00Du.tdb](https://orchid-project.org/data/databases/sgte-binary/PdY-00Du.tdb): PDY3_D011, type code %, sha256 `d90b41729a78d724…` ~~~~text 97: PHASE PDY3_D011 % 2 1 3 ! 98: CONST PDY3_D011 : PD : Y : ! ~~~~ Example references (3 of 3; assessments first): - [doi:10.1016/S0925-8388(99)00582-4](https://doi.org/10.1016/S0925-8388%2899%2900582-4) Z. Du, H. Yang, C. Li, J. Alloys Compd., 297, 185-91(2000). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/0022-5088(73)90006-4](https://doi.org/10.1016/0022-5088%2873%2990006-4) O Loebich, E Raub, Die Legierungen des Palladiums mit Yttrium, Samarium, Gadolinium, Dysprosium, Holmium und Erbium, Journal of the Less Common Metals 30, 47-62 (1973). _cited as the source of values for this phase_ - [doi:10.1016/0022-5088(85)90271-1](https://doi.org/10.1016/0022-5088%2885%2990271-1) R. Kuentzler, O. Loebich, Electronic properties and stability of the ordered Pd-Y alloys, Journal of the Less Common Metals 106, 335-348 (1985). _cited as the source of values for this phase_ ## Please cite - R. Arróyave, J. Saal, D. Shin, ORCHID-Registry: phase registry of binary systems (version 2026.10; Version 1, machine-extracted), Zenodo (2026). https://doi.org/10.5281/zenodo.23735970 - R. Arróyave, J. Saal, D. Shin, ORCHID data: umbrella record of the ORCHID datasets (version 2026.10; Version 1, machine-extracted), Zenodo (2026). https://doi.org/10.5281/zenodo.23736065 Also cite B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, https://doi.org/10.1016/j.calphad.2025.102833 (CC BY 4.0), and the original assessment named in each file; A. Jain et al., The Materials Project: A materials genome approach to accelerating materials innovation, APL Materials 1 (2013) 011002, https://doi.org/10.1063/1.4812323 (CC BY 4.0); J. E. Saal et al., JOM 65 (2013) 1501, https://doi.org/10.1007/s11837-013-0755-4 and S. Kirklin et al., npj Comput. Mater. 1 (2015) 15010, https://doi.org/10.1038/npjcompumats.2015.10 (CC BY 4.0); the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work). Version 1, machine-extracted: values were read by language-model readers constrained to quote their source and checked automatically, and the release was then audited on the printed pages by adversarial audits, an independent second review of fit-facing records and a preliminary human review of a frozen sample. Flags such as accepted and ESPEI-ready record screening results, not certification; known issues are listed in the release notes. ```bibtex @misc{orchid_phase_registry_2026, author = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon}, title = {{ORCHID-Registry: phase registry of binary systems}}, version = {2026.10}, publisher = {Zenodo}, year = {2026}, doi = {10.5281/zenodo.23735970}, url = {https://doi.org/10.5281/zenodo.23735970}, note = {Version 1, machine-extracted} } @misc{orchid_data_2026, author = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon}, title = {{ORCHID data: umbrella record of the ORCHID datasets}}, version = {2026.10}, publisher = {Zenodo}, year = {2026}, doi = {10.5281/zenodo.23736065}, url = {https://doi.org/10.5281/zenodo.23736065}, note = {Version 1, machine-extracted} } ``` --- Derived data CC BY 4.0 ([licence](https://creativecommons.org/licenses/by/4.0/)): cite the ORCHID phase registry and the sources named on the page (TDB assessments, Hallstedt 2025, Materials Project, OQMD). TDB statements are quoted as written; parameter expressions are not reproduced. Field reference: [SCHEMA.md](https://data.orchid-project.org/phases/SCHEMA.md). Machine-readable guide: [llms.txt](https://data.orchid-project.org/llms.txt).