# Pd–Sm phases

> Pd–Sm system: 14 phases (tier A 7, tier B 1, tier C 1, liquid 1, needs_review 4); 14 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-SM.html · Markdown: https://data.orchid-project.org/phases/pages/PD-SM.md

14 phases (tier A 7, tier B 1, tier C 1, liquid 1, needs_review 4); 14 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-SM) · [full JSON](https://data.orchid-project.org/phases/systems/PD-SM.json) · [Pd–Sm system page](https://data.orchid-project.org/systems/PD-SM.html) · [Markdown](https://data.orchid-project.org/phases/pages/PD-SM.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md)

Table: Phases of the Pd–Sm system (14)

| Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models |
|---|---|---|---|---:|---:|
| [BCC_A2](#phase-pd-sm-bcc-a2); _phase:pd-sm:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 1010.07–1345 K, x(Sm) 0.99948–1 | 0 | 1 |
| [FCC_A1](#phase-pd-sm-fcc-a1); _phase:pd-sm:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1930.77 K, x(Sm) 0–0.10385 | 0 | 1 |
| [HCP_A3](#phase-pd-sm-hcp-a3); _phase:pd-sm:hcp-a3_ | Mg · A3 · hP2 · P6_3/mmc (194) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 960–1228 K, x(Sm) 0.98904–1 | 0 | 1 |
| [LIQUID](#phase-pd-sm-liquid); _phase:pd-sm:liquid_ | liquid | liquid | stable in 1 of 1 calculated diagram(s): 964.99–2500 K, x(Sm) 0–1 | 0 | 1 |
| [PD21SM10](#phase-pd-sm-pd21sm10); _phase:pd-sm:pd21sm10_ | Pd21Sm10 · mC124 · C2/m (12) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–1432.81 K, x(Sm) 0.32258–0.32258 | 0 | 1 |
| [PD2SM3](#phase-pd-sm-pd2sm3); _phase:pd-sm:pd2sm3_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 300–1067.02 K, x(Sm) 0.6–0.6 | 0 | 1 |
| [PD3SM_L12](#phase-pd-sm-pd3sm-l12); _phase:pd-sm:pd3sm-l12_ | AuCu3 · L1_2 · cP4 · Pm-3m (221) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1891.59 K, x(Sm) 0.22758–0.25 | 0 | 1 |
| [PD3SM7_D102](#phase-pd-sm-pd3sm7-d102); _phase:pd-sm:pd3sm7-d102_ | Fe3Th7 · D10_2 · hP20 · P6_3mc (186) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1002.9 K, x(Sm) 0.7–0.7 | 0 | 1 |
| [PD4SM3](#phase-pd-sm-pd4sm3); _phase:pd-sm:pd4sm3_ | Pd4Pu3 · hR14 · R-3 (148) | tier B: DFT-supported (unique MP + OQMD match) | stable in 1 of 1 calculated diagram(s): 300–1533.62 K, x(Sm) 0.42857–0.42857 | 0 | 1 |
| [PD5SM](#phase-pd-sm-pd5sm); _phase:pd-sm:pd5sm_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 300–1392.84 K, x(Sm) 0.16667–0.16667 | 0 | 1 |
| [PD7SM](#phase-pd-sm-pd7sm); _phase:pd-sm:pd7sm_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 300–820.12 K, x(Sm) 0.125–0.125 | 0 | 1 |
| [PDSM_B33](#phase-pd-sm-pdsm-b33); _phase:pd-sm:pdsm-b33_ | CrB · B33 · oC8 · Cmcm (63) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1253.58 K, x(Sm) 0.5–0.50904 | 0 | 1 |
| [PDSM_BETA](#phase-pd-sm-pdsm-beta); _phase:pd-sm:pdsm-beta_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 1231.81–1543.39 K, x(Sm) 0.5–0.5044 | 0 | 1 |
| [RHOMB_C19](#phase-pd-sm-rhomb-c19); _phase:pd-sm:rhomb-c19_ | CdCl2 · C19 · hR3 · R-3m (166) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1205.88 K, x(Sm) 0.99262–1 | 0 | 1 |

## BCC_A2 (Pd–Sm)

- Id: `phase:pd-sm: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): 1010.07–1345 K, x(Sm) 0.99948–1
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-sm:bcc-a2)

Names (2): _corpus: _corpus:phase:pd-sm:bcc-a2  
_tdb: _tdb:PdSm-00Du-LB.tdb:BCC_A2  


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

[PdSm-00Du-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/PdSm-00Du-LB.tdb): BCC_A2, type code %B, sha256 `373deba349e8638b…`

~~~~text
32: PHASE BCC_A2 %B 2 1 3 !
33: CONST BCC_A2 : PD SM% : VA : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1515/ijmr-2000-910603](https://doi.org/10.1515/ijmr-2000-910603) Z. Du, H. Yang, Z. Metallkd., 91, 455-59(2000).  
_assessment that models this phase_

## FCC_A1 (Pd–Sm)

- Id: `phase:pd-sm: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): 300–1930.77 K, x(Sm) 0–0.10385
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-sm:fcc-a1)

Names (2): _corpus: _corpus:phase:pd-sm:fcc-a1  
_tdb: _tdb:PdSm-00Du-LB.tdb:FCC_A1  


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

[PdSm-00Du-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/PdSm-00Du-LB.tdb): FCC_A1, type code %A, sha256 `373deba349e8638b…`

~~~~text
27: PHASE FCC_A1 %A 2 1 1 !
28: CONST FCC_A1 : PD% SM : VA : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1515/ijmr-2000-910603](https://doi.org/10.1515/ijmr-2000-910603) Z. Du, H. Yang, Z. Metallkd., 91, 455-59(2000).  
_assessment that models this phase_

## HCP_A3 (Pd–Sm)

- Id: `phase:pd-sm: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): 960–1228 K, x(Sm) 0.98904–1
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-sm:hcp-a3)

Names (2): _corpus: _corpus:phase:pd-sm:hcp-a3  
_tdb: _tdb:PdSm-00Du-LB.tdb:HCP_A3  


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

[PdSm-00Du-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/PdSm-00Du-LB.tdb): HCP_A3, type code %A, sha256 `373deba349e8638b…`

~~~~text
37: PHASE HCP_A3 %A 2 1 0.5 !
38: CONST HCP_A3 : PD SM% : VA : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1515/ijmr-2000-910603](https://doi.org/10.1515/ijmr-2000-910603) Z. Du, H. Yang, Z. Metallkd., 91, 455-59(2000).  
_assessment that models this phase_

## LIQUID (Pd–Sm)

- Id: `phase:pd-sm:liquid`; status `assigned`
- Structure: liquid; type `st:liquid`; liquid; confidence high
- Stability: stable in 1 of 1 calculated diagram(s): 964.99–2500 K, x(Sm) 0–1
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-sm:liquid)

Names (2): _corpus: _corpus:phase:pd-sm:liquid  
_tdb: _tdb:PdSm-00Du-LB.tdb:LIQUID  


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

[PdSm-00Du-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/PdSm-00Du-LB.tdb): LIQUID, type code %, sha256 `373deba349e8638b…`

~~~~text
22: PHASE LIQUID:L % 1 1 !
23: CONST LIQUID:L : PD SM : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1515/ijmr-2000-910603](https://doi.org/10.1515/ijmr-2000-910603) Z. Du, H. Yang, Z. Metallkd., 91, 455-59(2000).  
_assessment that models this phase_

## PD21SM10 (Pd–Sm)

- Id: `phase:pd-sm:pd21sm10`; status `assigned`
- Structure: Pd21Sm10 · mC124 · C2/m (12); type `st:pd21sm10-mc124`; 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_oqmd, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
- Stoichiometry: Pd 0.6774, Sm 0.3226
- Stability: stable in 1 of 1 calculated diagram(s): 300–1432.81 K, x(Sm) 0.32258–0.32258
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-sm:pd21sm10)

Names (2): _corpus: _corpus:phase:pd-sm:pd21sm10  
_tdb: _tdb:PdSm-00Du-LB.tdb:PD21SM10  


### TDB models of PD21SM10 (1): PHASE and CONSTITUENT statements as written

[PdSm-00Du-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/PdSm-00Du-LB.tdb): PD21SM10, type code %, sha256 `373deba349e8638b…`

~~~~text
62: PHASE PD21SM10 % 2 21 10 !
63: CONST PD21SM10 : PD : SM : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1515/ijmr-2000-910603](https://doi.org/10.1515/ijmr-2000-910603) Z. Du, H. Yang, Z. Metallkd., 91, 455-59(2000).  
_assessment that models this phase_

## PD2SM3 (Pd–Sm)

- Id: `phase:pd-sm:pd2sm3`; status `needs_review`
- No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete
- Candidate (sgte_mmc2): (Pd2Sm3) — Hallstedt 2025 mmc2 row for PD2SM3: Pd2Sm3
- Stoichiometry: Pd 0.4000, Sm 0.6000
- Stability: stable in 1 of 1 calculated diagram(s): 300–1067.02 K, x(Sm) 0.6–0.6
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-sm:pd2sm3)

Names (2): _corpus: _corpus:phase:pd-sm:pd2sm3  
_tdb: _tdb:PdSm-00Du-LB.tdb:PD2SM3  


### TDB models of PD2SM3 (1): PHASE and CONSTITUENT statements as written

[PdSm-00Du-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/PdSm-00Du-LB.tdb): PD2SM3, type code %, sha256 `373deba349e8638b…`

~~~~text
82: PHASE PD2SM3 % 2 2 3 !
83: CONST PD2SM3 : PD : SM : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1515/ijmr-2000-910603](https://doi.org/10.1515/ijmr-2000-910603) Z. Du, H. Yang, Z. Metallkd., 91, 455-59(2000).  
_assessment that models this phase_

## PD3SM_L12 (Pd–Sm)

- Id: `phase:pd-sm:pd3sm-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): 300–1891.59 K, x(Sm) 0.22758–0.25
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-sm:pd3sm-l12)

Names (2): _corpus: _corpus:phase:pd-sm:pd3sm-l12  
_tdb: _tdb:PdSm-00Du-LB.tdb:PD3SM_L12  


### TDB models of PD3SM_L12 (1): PHASE and CONSTITUENT statements as written

[PdSm-00Du-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/PdSm-00Du-LB.tdb): PD3SM_L12, type code %, sha256 `373deba349e8638b…`

~~~~text
57: PHASE PD3SM_L12 % 2 3 1 !
58: CONST PD3SM_L12 : PD : PD SM% : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1515/ijmr-2000-910603](https://doi.org/10.1515/ijmr-2000-910603) Z. Du, H. Yang, Z. Metallkd., 91, 455-59(2000).  
_assessment that models this phase_

## PD3SM7_D102 (Pd–Sm)

- Id: `phase:pd-sm:pd3sm7-d102`; status `assigned`
- Structure: Fe3Th7 · D10_2 · hP20 · P6_3mc (186); type `st:d10-2-fe3th7-hp20`; tier A: standard phase name; confidence high
- Stoichiometry: Pd 0.3000, Sm 0.7000
- Stability: stable in 1 of 1 calculated diagram(s): 300–1002.9 K, x(Sm) 0.7–0.7
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-sm:pd3sm7-d102)

Names (2): _corpus: _corpus:phase:pd-sm:pd3sm7-d102  
_tdb: _tdb:PdSm-00Du-LB.tdb:PD3SM7_D102  


### TDB models of PD3SM7_D102 (1): PHASE and CONSTITUENT statements as written

[PdSm-00Du-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/PdSm-00Du-LB.tdb): PD3SM7_D102, type code %, sha256 `373deba349e8638b…`

~~~~text
87: PHASE PD3SM7_D102 % 2 3 7 !
88: CONST PD3SM7_D102 : PD : SM : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1515/ijmr-2000-910603](https://doi.org/10.1515/ijmr-2000-910603) Z. Du, H. Yang, Z. Metallkd., 91, 455-59(2000).  
_assessment that models this phase_

## PD4SM3 (Pd–Sm)

- Id: `phase:pd-sm:pd4sm3`; 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, Sm 0.4286
- Stability: stable in 1 of 1 calculated diagram(s): 300–1533.62 K, x(Sm) 0.42857–0.42857
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-sm:pd4sm3)

Names (4): _corpus: _corpus:phase:pd-sm:pd4sm3  
_mp: _mp:mp-aaackvpn  
_oqmd: _oqmd:oqmd-1437087  
_tdb: _tdb:PdSm-00Du-LB.tdb:PD4SM3  


### TDB models of PD4SM3 (1): PHASE and CONSTITUENT statements as written

[PdSm-00Du-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/PdSm-00Du-LB.tdb): PD4SM3, type code %, sha256 `373deba349e8638b…`

~~~~text
67: PHASE PD4SM3 % 2 4 3 !
68: CONST PD4SM3 : PD : SM : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1515/ijmr-2000-910603](https://doi.org/10.1515/ijmr-2000-910603) Z. Du, H. Yang, Z. Metallkd., 91, 455-59(2000).  
_assessment that models this phase_

## PD5SM (Pd–Sm)

- Id: `phase:pd-sm:pd5sm`; status `needs_review`
- No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete
- Candidate (sgte_mmc2): (Pd5Sm) — Hallstedt 2025 mmc2 row for PD5SM: Pd5Sm
- Stoichiometry: Pd 0.8333, Sm 0.1667
- Stability: stable in 1 of 1 calculated diagram(s): 300–1392.84 K, x(Sm) 0.16667–0.16667
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-sm:pd5sm)

Names (2): _corpus: _corpus:phase:pd-sm:pd5sm  
_tdb: _tdb:PdSm-00Du-LB.tdb:PD5SM  


### TDB models of PD5SM (1): PHASE and CONSTITUENT statements as written

[PdSm-00Du-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/PdSm-00Du-LB.tdb): PD5SM, type code %, sha256 `373deba349e8638b…`

~~~~text
52: PHASE PD5SM % 2 5 1 !
53: CONST PD5SM : PD : SM : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1515/ijmr-2000-910603](https://doi.org/10.1515/ijmr-2000-910603) Z. Du, H. Yang, Z. Metallkd., 91, 455-59(2000).  
_assessment that models this phase_

## PD7SM (Pd–Sm)

- Id: `phase:pd-sm:pd7sm`; status `needs_review`
- No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete
- Candidate (sgte_mmc2): (Pd7Sm) — Hallstedt 2025 mmc2 row for PD7SM: Pd7Sm
- Stoichiometry: Pd 0.8750, Sm 0.1250
- Stability: stable in 1 of 1 calculated diagram(s): 300–820.12 K, x(Sm) 0.125–0.125
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-sm:pd7sm)

Names (2): _corpus: _corpus:phase:pd-sm:pd7sm  
_tdb: _tdb:PdSm-00Du-LB.tdb:PD7SM  


### TDB models of PD7SM (1): PHASE and CONSTITUENT statements as written

[PdSm-00Du-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/PdSm-00Du-LB.tdb): PD7SM, type code %, sha256 `373deba349e8638b…`

~~~~text
47: PHASE PD7SM % 2 7 1 !
48: CONST PD7SM : PD : SM : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1515/ijmr-2000-910603](https://doi.org/10.1515/ijmr-2000-910603) Z. Du, H. Yang, Z. Metallkd., 91, 455-59(2000).  
_assessment that models this phase_

## PDSM_B33 (Pd–Sm)

- Id: `phase:pd-sm:pdsm-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): 300–1253.58 K, x(Sm) 0.5–0.50904
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-sm:pdsm-b33)

Names (2): _corpus: _corpus:phase:pd-sm:pdsm-b33  
_tdb: _tdb:PdSm-00Du-LB.tdb:PDSM_B33  


### TDB models of PDSM_B33 (1): PHASE and CONSTITUENT statements as written

[PdSm-00Du-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/PdSm-00Du-LB.tdb): PDSM_B33, type code %, sha256 `373deba349e8638b…`

~~~~text
77: PHASE PDSM_B33 % 2 1 1 !
78: CONST PDSM_B33 : PD% SM : SM : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1515/ijmr-2000-910603](https://doi.org/10.1515/ijmr-2000-910603) Z. Du, H. Yang, Z. Metallkd., 91, 455-59(2000).  
_assessment that models this phase_

## PDSM_BETA (Pd–Sm)

- Id: `phase:pd-sm:pdsm-beta`; status `needs_review`
- No structure assigned. Why: no_structure_token; off_stoichiometric_model
- Candidate (dft_mp): Cmcm (63) — on-hull MP SmPd at x(SM)=0.5000
- Candidate (dft_oqmd): Cmcm (63) — on-hull OQMD Pd1 Sm1 at x(SM)=0.5000
- Candidate (sgte_mmc2): (PdSm-beta) — Hallstedt 2025 mmc2 row for PDSM_BETA: PdSm-beta
- Stability: stable in 1 of 1 calculated diagram(s): 1231.81–1543.39 K, x(Sm) 0.5–0.5044
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-sm:pdsm-beta)

Names (2): _corpus: _corpus:phase:pd-sm:pdsm-beta  
_tdb: _tdb:PdSm-00Du-LB.tdb:PDSM_BETA  


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

[PdSm-00Du-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/PdSm-00Du-LB.tdb): PDSM_BETA, type code %, sha256 `373deba349e8638b…`

~~~~text
72: PHASE PDSM_BETA % 2 1 1 !
73: CONST PDSM_BETA : PD% SM : SM : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1515/ijmr-2000-910603](https://doi.org/10.1515/ijmr-2000-910603) Z. Du, H. Yang, Z. Metallkd., 91, 455-59(2000).  
_assessment that models this phase_

## RHOMB_C19 (Pd–Sm)

- Id: `phase:pd-sm:rhomb-c19`; status `assigned`
- Structure: CdCl2 · C19 · hR3 · R-3m (166); type `st:c19-cdcl2-hr3`; tier A: standard phase name; confidence high
- Stability: stable in 1 of 1 calculated diagram(s): 300–1205.88 K, x(Sm) 0.99262–1
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-sm:rhomb-c19)

Names (2): _corpus: _corpus:phase:pd-sm:rhomb-c19  
_tdb: _tdb:PdSm-00Du-LB.tdb:RHOMB_C19  


### TDB models of RHOMB_C19 (1): PHASE and CONSTITUENT statements as written

[PdSm-00Du-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/PdSm-00Du-LB.tdb): RHOMB_C19, type code %, sha256 `373deba349e8638b…`

~~~~text
42: PHASE RHOMB_C19 % 1 1 !
43: CONST RHOMB_C19 : PD SM% : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1515/ijmr-2000-910603](https://doi.org/10.1515/ijmr-2000-910603) Z. Du, H. Yang, Z. Metallkd., 91, 455-59(2000).  
_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). 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).