Dy–Pb phases

9 phases (tier A 5, tier C 1, liquid 1, needs_review 2); 9 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 · full JSON · Dy–Pb system page · Markdown · field reference

Phases of the Dy–Pb system (9)
Phase	Structure	Basis	Stability (calculated)	TDB models
BCC_A2 phase:dy-pb:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 1630.04–1688.11 K, x(Pb) 0–0.00976	1
DY5PB3_D88 phase:dy-pb:dy5pb3-d88	Mn5Si3 · D8_8 · hP16 · P6_3/mcm (193)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1962.8 K, x(Pb) 0.375–0.38832	1
DY5PB4 phase:dy-pb:dy5pb4	Ge4Sm5 · oP36 · Pnma (62)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 300–1825.3 K, x(Pb) 0.44444–0.44444	1
DYPB phase:dy-pb:dypb		needs_review	stable in 1 of 1 calculated diagram(s): 1412.76–1718.23 K, x(Pb) 0.5–0.5	1
DYPB2 phase:dy-pb:dypb2		needs_review	stable in 1 of 1 calculated diagram(s): 300–1235.02 K, x(Pb) 0.66667–0.66667	1
DYPB3_L12 phase:dy-pb:dypb3-l12	AuCu3 · L1_2 · cP4 · Pm-3m (221)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1136.98 K, x(Pb) 0.75–0.75	1
FCC_A1 phase:dy-pb:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–2499.95 K, x(Pb) 1–1	1
HCP_A3 phase:dy-pb:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1654.15 K, x(Pb) 0–0.00711	1
LIQUID phase:dy-pb:liquid	liquid	liquid	stable in 1 of 1 calculated diagram(s): 598.7–2500 K, x(Pb) 0–1	1

BCC_A2 (Dy–Pb)

Id: phase:dy-pb: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): 1630.04–1688.11 K, x(Pb) 0–0.00976
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:dy-pb:bcc-a2
tdb: tdb:DyPb-14Idd.tdb:BCC_A2

TDB models of BCC_A2 (1): PHASE and CONSTITUENT statements as written

DyPb-14Idd.tdb: BCC_A2, type code %B, sha256 173b0a398b8681da…

41: PHASE BCC_A2 %B 2 1 3 !
42: CONST BCC_A2 : DY% PB : VA : !

Example references (1 of 1; assessments first):

doi:10.1016/j.jallcom.2013.11.131 A. Iddaoudi, C. Servant, N. Selhaoui, S. Kardellass, K. Mahdouk, L. Bouirden, Thermodynamic modeling of the RE–Pb (RE=Sc, Dy, Gd) systems, Journal of Alloys and Compounds 589, 192-199 (2014).
assessment that models this phase

DY5PB3_D88 (Dy–Pb)

Id: phase:dy-pb:dy5pb3-d88; status assigned
Structure: Mn5Si3 · D8_8 · hP16 · P6_3/mcm (193); type st:d8-8-mn5si3-hp16; tier A: standard phase name; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 300–1962.8 K, x(Pb) 0.375–0.38832
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:dy-pb:dy5pb3-d88
tdb: tdb:DyPb-14Idd.tdb:DY5PB3_D88

TDB models of DY5PB3_D88 (1): PHASE and CONSTITUENT statements as written

DyPb-14Idd.tdb: DY5PB3_D88, type code %, sha256 173b0a398b8681da…

51: PHASE DY5PB3_D88 % 2 5 3 !
52: CONST DY5PB3_D88 : DY% PB : PB : !

Example references (1 of 1; assessments first):

doi:10.1016/j.jallcom.2013.11.131 A. Iddaoudi, C. Servant, N. Selhaoui, S. Kardellass, K. Mahdouk, L. Bouirden, Thermodynamic modeling of the RE–Pb (RE=Sc, Dy, Gd) systems, Journal of Alloys and Compounds 589, 192-199 (2014).
assessment that models this phase

DY5PB4 (Dy–Pb)

Id: phase:dy-pb:dy5pb4; status assigned
Structure: Ge4Sm5 · oP36 · Pnma (62); type st:ge4sm5-op36; 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
Caveat: not certain from the name or DFT alone (dft_space_group_62_matches_2_structure_types, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Dy 0.5556, Pb 0.4444
Stability: stable in 1 of 1 calculated diagram(s): 300–1825.3 K, x(Pb) 0.44444–0.44444
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:dy-pb:dy5pb4
tdb: tdb:DyPb-14Idd.tdb:DY5PB4

TDB models of DY5PB4 (1): PHASE and CONSTITUENT statements as written

DyPb-14Idd.tdb: DY5PB4, type code %, sha256 173b0a398b8681da…

56: PHASE DY5PB4 % 2 5 4 !
57: CONST DY5PB4 : DY : PB : !

Example references (1 of 1; assessments first):

doi:10.1016/j.jallcom.2013.11.131 A. Iddaoudi, C. Servant, N. Selhaoui, S. Kardellass, K. Mahdouk, L. Bouirden, Thermodynamic modeling of the RE–Pb (RE=Sc, Dy, Gd) systems, Journal of Alloys and Compounds 589, 192-199 (2014).
assessment that models this phase

DYPB (Dy–Pb)

Id: phase:dy-pb:dypb; status needs_review
No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete
Candidate (sgte_mmc2): (DyPb) — Hallstedt 2025 mmc2 row for DYPB: DyPb
Stoichiometry: Dy 0.5000, Pb 0.5000
Stability: stable in 1 of 1 calculated diagram(s): 1412.76–1718.23 K, x(Pb) 0.5–0.5
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:dy-pb:dypb
tdb: tdb:DyPb-14Idd.tdb:DYPB

TDB models of DYPB (1): PHASE and CONSTITUENT statements as written

DyPb-14Idd.tdb: DYPB, type code %, sha256 173b0a398b8681da…

61: PHASE DYPB % 2 1 1 !
62: CONST DYPB : DY : PB : !

Example references (1 of 1; assessments first):

doi:10.1016/j.jallcom.2013.11.131 A. Iddaoudi, C. Servant, N. Selhaoui, S. Kardellass, K. Mahdouk, L. Bouirden, Thermodynamic modeling of the RE–Pb (RE=Sc, Dy, Gd) systems, Journal of Alloys and Compounds 589, 192-199 (2014).
assessment that models this phase

DYPB2 (Dy–Pb)

Id: phase:dy-pb:dypb2; status needs_review
No structure assigned. Why: no_on_hull_entry_in_mp; no_structure_token; sgte_mmc2_row_incomplete
Candidate (dft_oqmd): Cmcm (63) — on-hull OQMD Dy1 Pb2 at x(PB)=0.6667
Candidate (sgte_mmc2): (DyPb2) — Hallstedt 2025 mmc2 row for DYPB2: DyPb2
Stoichiometry: Dy 0.3333, Pb 0.6667
Stability: stable in 1 of 1 calculated diagram(s): 300–1235.02 K, x(Pb) 0.66667–0.66667
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:dy-pb:dypb2
tdb: tdb:DyPb-14Idd.tdb:DYPB2

TDB models of DYPB2 (1): PHASE and CONSTITUENT statements as written

DyPb-14Idd.tdb: DYPB2, type code %, sha256 173b0a398b8681da…

66: PHASE DYPB2 % 2 1 2 !
67: CONST DYPB2 : DY : PB : !

Example references (1 of 1; assessments first):

doi:10.1016/j.jallcom.2013.11.131 A. Iddaoudi, C. Servant, N. Selhaoui, S. Kardellass, K. Mahdouk, L. Bouirden, Thermodynamic modeling of the RE–Pb (RE=Sc, Dy, Gd) systems, Journal of Alloys and Compounds 589, 192-199 (2014).
assessment that models this phase

DYPB3_L12 (Dy–Pb)

Id: phase:dy-pb:dypb3-l12; status assigned
Structure: AuCu3 · L1_2 · cP4 · Pm-3m (221); type st:l1-2-aucu3-cp4; tier A: standard phase name; confidence high
Stoichiometry: Dy 0.2500, Pb 0.7500
Stability: stable in 1 of 1 calculated diagram(s): 300–1136.98 K, x(Pb) 0.75–0.75
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:dy-pb:dypb3-l12
tdb: tdb:DyPb-14Idd.tdb:DYPB3_L12

TDB models of DYPB3_L12 (1): PHASE and CONSTITUENT statements as written

DyPb-14Idd.tdb: DYPB3_L12, type code %, sha256 173b0a398b8681da…

71: PHASE DYPB3_L12 % 2 1 3 !
72: CONST DYPB3_L12 : DY : PB : !

Example references (1 of 1; assessments first):

doi:10.1016/j.jallcom.2013.11.131 A. Iddaoudi, C. Servant, N. Selhaoui, S. Kardellass, K. Mahdouk, L. Bouirden, Thermodynamic modeling of the RE–Pb (RE=Sc, Dy, Gd) systems, Journal of Alloys and Compounds 589, 192-199 (2014).
assessment that models this phase

FCC_A1 (Dy–Pb)

Id: phase:dy-pb: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): 300–2499.95 K, x(Pb) 1–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:dy-pb:fcc-a1
tdb: tdb:DyPb-14Idd.tdb:FCC_A1

TDB models of FCC_A1 (1): PHASE and CONSTITUENT statements as written

DyPb-14Idd.tdb: FCC_A1, type code %A, sha256 173b0a398b8681da…

36: PHASE FCC_A1 %A 2 1 1 !
37: CONST FCC_A1 : DY PB% : VA : !

Example references (1 of 1; assessments first):

doi:10.1016/j.jallcom.2013.11.131 A. Iddaoudi, C. Servant, N. Selhaoui, S. Kardellass, K. Mahdouk, L. Bouirden, Thermodynamic modeling of the RE–Pb (RE=Sc, Dy, Gd) systems, Journal of Alloys and Compounds 589, 192-199 (2014).
assessment that models this phase

HCP_A3 (Dy–Pb)

Id: phase:dy-pb: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): 300–1654.15 K, x(Pb) 0–0.00711
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:dy-pb:hcp-a3
tdb: tdb:DyPb-14Idd.tdb:HCP_A3

TDB models of HCP_A3 (1): PHASE and CONSTITUENT statements as written

DyPb-14Idd.tdb: HCP_A3, type code %A, sha256 173b0a398b8681da…

46: PHASE HCP_A3 %A 2 1 0.5 !
47: CONST HCP_A3 : DY% PB : VA : !

Example references (1 of 1; assessments first):

doi:10.1016/j.jallcom.2013.11.131 A. Iddaoudi, C. Servant, N. Selhaoui, S. Kardellass, K. Mahdouk, L. Bouirden, Thermodynamic modeling of the RE–Pb (RE=Sc, Dy, Gd) systems, Journal of Alloys and Compounds 589, 192-199 (2014).
assessment that models this phase

LIQUID (Dy–Pb)

Id: phase:dy-pb:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 598.7–2500 K, x(Pb) 0–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:dy-pb:liquid
tdb: tdb:DyPb-14Idd.tdb:LIQUID

TDB models of LIQUID (1): PHASE and CONSTITUENT statements as written

DyPb-14Idd.tdb: LIQUID, type code %, sha256 173b0a398b8681da…

31: PHASE LIQUID:L % 1 1 !
32: CONST LIQUID:L : DY PB : !

Example references (1 of 1; assessments first):

doi:10.1016/j.jallcom.2013.11.131 A. Iddaoudi, C. Servant, N. Selhaoui, S. Kardellass, K. Mahdouk, L. Bouirden, Thermodynamic modeling of the RE–Pb (RE=Sc, Dy, Gd) systems, Journal of Alloys and Compounds 589, 192-199 (2014).
assessment that models 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). doi: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). doi: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.

@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}
}