Mn–Pd phases

13 phases (tier A 9, tier B 1, liquid 1, needs_review 2); 12 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 · Mn–Pd system page · Markdown · field reference

Phases of the Mn–Pd system (13)
Phase	Structure	Basis	Stability (calculated)	TDB models
BCC_A2 phase:mn-pd:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 1346.01–1520.99 K, x(Pd) 0–0.00862	1
CBCC_A12 phase:mn-pd:cbcc-a12	alpha-Mn · A12 · cI58 · I-43m (217)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1007.96 K, x(Pd) 0–0.0377	1
CUB_A13 phase:mn-pd:cub-a13	beta-Mn · A13 · cP20 · P4_132 (213)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 980–1404.99 K, x(Pd) 0–0.03681	1
FCC_A1 phase:mn-pd:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–2499.24 K, x(Pd) 0–1	1
HCP_A3 phase:mn-pd:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	not stable in 1 calculated diagram(s)	1
LIQUID phase:mn-pd:liquid	liquid	liquid	stable in 1 of 1 calculated diagram(s): 1399.58–2500 K, x(Pd) 0–1	1
MN3PD5 phase:mn-pd:mn3pd5	Ga3Pt5 · oC16 · Cmmm (65)	tier B: DFT-supported (unique MP + OQMD match)	stable in 1 of 1 calculated diagram(s): 300–854.89 K, x(Pd) 0.625–0.625	1
MNPD_B2 phase:mn-pd:mnpd-b2	CsCl · B2 · cP2 · Pm-3m (221)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 740–1774.98 K, x(Pd) 0.09–0.59329	1
MNPD_L10 phase:mn-pd:mnpd-l10	AuCu · L1_0 · tP4 · P4/mmm (123)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 680.56–1386.82 K, x(Pd) 0.38373–0.61686	1
MNPD_L10_AF phase:mn-pd:mnpd-l10-af		needs_review	stable in 1 of 1 calculated diagram(s): 300–793.06 K, x(Pd) 0.40198–0.50002	1
MNPD2 phase:mn-pd:mnpd2		needs_review	stable in 1 of 1 calculated diagram(s): 300–975.57 K, x(Pd) 0.66667–0.66667	1
MNPD3_D023 phase:mn-pd:mnpd3-d023	Al3Zr · D0_23 · tI16 · I4/mmm (139)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1080 K, x(Pd) 0.69965–0.75034	1
MNPD4_L12 phase:mn-pd:mnpd4-l12	AuCu3 · L1_2 · cP4 · Pm-3m (221)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1032.74 K, x(Pd) 0.81444–0.86009	1

BCC_A2 (Mn–Pd)

Id: phase:mn-pd: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): 1346.01–1520.99 K, x(Pd) 0–0.00862
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:mn-pd:bcc-a2
tdb: tdb:MnPd-15Pov.tdb:BCC_A2

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

MnPd-15Pov.tdb: BCC_A2, type code %B, sha256 6d1375354c547ac6…

42: PHASE BCC_A2 %B 2 1 3 !
43: CONST BCC_A2 : MN% PD : VA : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2015.09.003 E. Povoden-Karadeniz, P. Lang, F. Moszner, S. Pogatscher, A.V. Ruban, P.J. Uggowitzer, E. Kozeschnik, Calphad, 51, 314-33(2015).
assessment that models this phase

CBCC_A12 (Mn–Pd)

Id: phase:mn-pd:cbcc-a12; status assigned
Structure: alpha-Mn · A12 · cI58 · I-43m (217); type st:a12-alpha-mn-ci58; tier A: standard phase name; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 300–1007.96 K, x(Pd) 0–0.0377
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:mn-pd:cbcc-a12
tdb: tdb:MnPd-15Pov.tdb:CBCC_A12

TDB models of CBCC_A12 (1): PHASE and CONSTITUENT statements as written

MnPd-15Pov.tdb: CBCC_A12, type code %, sha256 6d1375354c547ac6…

52: PHASE CBCC_A12 % 2 1 1 !
53: CONST CBCC_A12 : MN% PD : VA : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2015.09.003 E. Povoden-Karadeniz, P. Lang, F. Moszner, S. Pogatscher, A.V. Ruban, P.J. Uggowitzer, E. Kozeschnik, Calphad, 51, 314-33(2015).
assessment that models this phase

CUB_A13 (Mn–Pd)

Id: phase:mn-pd:cub-a13; status assigned
Structure: beta-Mn · A13 · cP20 · P4_132 (213); type st:a13-beta-mn-cp20; tier A: standard phase name; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 980–1404.99 K, x(Pd) 0–0.03681
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:mn-pd:cub-a13
tdb: tdb:MnPd-15Pov.tdb:CUB_A13

TDB models of CUB_A13 (1): PHASE and CONSTITUENT statements as written

MnPd-15Pov.tdb: CUB_A13, type code %, sha256 6d1375354c547ac6…

57: PHASE CUB_A13 % 2 1 1 !
58: CONST CUB_A13 : MN% PD : VA : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2015.09.003 E. Povoden-Karadeniz, P. Lang, F. Moszner, S. Pogatscher, A.V. Ruban, P.J. Uggowitzer, E. Kozeschnik, Calphad, 51, 314-33(2015).
assessment that models this phase

FCC_A1 (Mn–Pd)

Id: phase:mn-pd: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): 300–2499.24 K, x(Pd) 0–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:mn-pd:fcc-a1
tdb: tdb:MnPd-15Pov.tdb:FCC_A1

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

MnPd-15Pov.tdb: FCC_A1, type code %A, sha256 6d1375354c547ac6…

37: PHASE FCC_A1 %A 2 1 1 !
38: CONST FCC_A1 : MN% PD% : VA : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2015.09.003 E. Povoden-Karadeniz, P. Lang, F. Moszner, S. Pogatscher, A.V. Ruban, P.J. Uggowitzer, E. Kozeschnik, Calphad, 51, 314-33(2015).
assessment that models this phase

HCP_A3 (Mn–Pd)

Id: phase:mn-pd: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: not stable in 1 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:mn-pd:hcp-a3
tdb: tdb:MnPd-15Pov.tdb:HCP_A3

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

MnPd-15Pov.tdb: HCP_A3, type code %, sha256 6d1375354c547ac6…

47: PHASE HCP_A3 % 2 1 0.5 !
48: CONST HCP_A3 : MN PD : VA : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2015.09.003 E. Povoden-Karadeniz, P. Lang, F. Moszner, S. Pogatscher, A.V. Ruban, P.J. Uggowitzer, E. Kozeschnik, Calphad, 51, 314-33(2015).
assessment that models this phase

LIQUID (Mn–Pd)

Id: phase:mn-pd:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 1399.58–2500 K, x(Pd) 0–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:mn-pd:liquid
tdb: tdb:MnPd-15Pov.tdb:LIQUID

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

MnPd-15Pov.tdb: LIQUID, type code %, sha256 6d1375354c547ac6…

32: PHASE LIQUID:L % 1 1 !
33: CONST LIQUID:L : MN PD : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2015.09.003 E. Povoden-Karadeniz, P. Lang, F. Moszner, S. Pogatscher, A.V. Ruban, P.J. Uggowitzer, E. Kozeschnik, Calphad, 51, 314-33(2015).
assessment that models this phase

MN3PD5 (Mn–Pd)

Id: phase:mn-pd:mn3pd5; status assigned
Structure: Ga3Pt5 · oC16 · Cmmm (65); type st:ga3pt5-oc16; tier B: DFT-supported (unique MP + OQMD match); confidence high
Stoichiometry: Mn 0.3750, Pd 0.6250
Stability: stable in 1 of 1 calculated diagram(s): 300–854.89 K, x(Pd) 0.625–0.625
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:mn-pd:mn3pd5
mp: mp:mp-aaacjjzz
oqmd: oqmd:oqmd-684936
tdb: tdb:MnPd-15Pov.tdb:MN3PD5

TDB models of MN3PD5 (1): PHASE and CONSTITUENT statements as written

MnPd-15Pov.tdb: MN3PD5, type code %, sha256 6d1375354c547ac6…

77: PHASE MN3PD5 % 2 3 5 !
78: CONST MN3PD5 : MN : PD :  !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2015.09.003 E. Povoden-Karadeniz, P. Lang, F. Moszner, S. Pogatscher, A.V. Ruban, P.J. Uggowitzer, E. Kozeschnik, Calphad, 51, 314-33(2015).
assessment that models this phase

MNPD_B2 (Mn–Pd)

Id: phase:mn-pd:mnpd-b2; status assigned
Structure: CsCl · B2 · cP2 · Pm-3m (221); type st:b2-cscl-cp2; tier A: standard phase name; confidence high
Caveat: partitioned order/disorder model in MnPd-15Pov.tdb also describes the disordered state
Stability: stable in 1 of 1 calculated diagram(s): 740–1774.98 K, x(Pd) 0.09–0.59329
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:mn-pd:mnpd-b2
tdb: tdb:MnPd-15Pov.tdb:MNPD_B2

TDB models of MNPD_B2 (1): PHASE and CONSTITUENT statements as written

MnPd-15Pov.tdb: MNPD_B2, type code %, sha256 6d1375354c547ac6…

72: PHASE MNPD_B2 % 2 0.5 0.5 !
73: CONST MNPD_B2 : MN PD : MN PD : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2015.09.003 E. Povoden-Karadeniz, P. Lang, F. Moszner, S. Pogatscher, A.V. Ruban, P.J. Uggowitzer, E. Kozeschnik, Calphad, 51, 314-33(2015).
assessment that models this phase

MNPD_L10 (Mn–Pd)

Id: phase:mn-pd:mnpd-l10; status assigned
Structure: AuCu · L1_0 · tP4 · P4/mmm (123); type st:l1-0-aucu-tp4; tier A: standard phase name; confidence high
Caveat: partitioned order/disorder model in MnPd-15Pov.tdb also describes the disordered state
Stability: stable in 1 of 1 calculated diagram(s): 680.56–1386.82 K, x(Pd) 0.38373–0.61686
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:mn-pd:mnpd-l10
tdb: tdb:MnPd-15Pov.tdb:MNPD_L10

TDB models of MNPD_L10 (1): PHASE and CONSTITUENT statements as written

MnPd-15Pov.tdb: MNPD_L10, type code %, sha256 6d1375354c547ac6…

67: PHASE MNPD_L10 % 2 0.5 0.5 !
68: CONST MNPD_L10 : MN PD : MN PD :  !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2015.09.003 E. Povoden-Karadeniz, P. Lang, F. Moszner, S. Pogatscher, A.V. Ruban, P.J. Uggowitzer, E. Kozeschnik, Calphad, 51, 314-33(2015).
assessment that models this phase

MNPD_L10_AF (Mn–Pd)

Id: phase:mn-pd:mnpd-l10-af; status needs_review
No structure assigned. Why: assessment_declared_blocked_by:several_structure_tokens; several_structure_tokens:AF,L10
Candidate (name_token): HgSn12 · A_f · hP1 · P6/mmm (191) — Strukturbericht/word 'AF' in the TDB name
Candidate (name_token): AuCu · L1_0 · tP4 · P4/mmm (123) — Strukturbericht/word 'L10' in the TDB name
Candidate (sgte_mmc2): AuCu · L1_0 · tP4 · P4/mmm (123) — Hallstedt 2025 mmc2 row for MNPD_L10_AF: MnPd (low T, antiferromagnetic)
Candidate (tdb_comment): AuCu · tP4 · P4/mmm, L1_0 — MnPd-15Pov.tdb: 'Prototype AuCu (tP4, P4/mmm, L1_0)'
Stability: stable in 1 of 1 calculated diagram(s): 300–793.06 K, x(Pd) 0.40198–0.50002
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:mn-pd:mnpd-l10-af
tdb: tdb:MnPd-15Pov.tdb:MNPD_L10_AF

TDB models of MNPD_L10_AF (1): PHASE and CONSTITUENT statements as written

MnPd-15Pov.tdb: MNPD_L10_AF, type code %, sha256 6d1375354c547ac6…

62: PHASE MNPD_L10_AF % 2 0.5 0.5 !
63: CONST MNPD_L10_AF : MN PD : MN PD :  !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2015.09.003 E. Povoden-Karadeniz, P. Lang, F. Moszner, S. Pogatscher, A.V. Ruban, P.J. Uggowitzer, E. Kozeschnik, Calphad, 51, 314-33(2015).
assessment that models this phase

MNPD2 (Mn–Pd)

Id: phase:mn-pd:mnpd2; status needs_review
No structure assigned. Why: dft_space_group_62_matches_6_structure_types; no_structure_token; sgte_mmc2_row_incomplete
Candidate (dft_mp): Pnma (62) — on-hull MP MnPd2 at x(PD)=0.6667
Candidate (dft_oqmd): Pnma (62) — on-hull OQMD Mn1 Pd2 at x(PD)=0.6667
Candidate (dft_space_group_and_stoichiometry): AlAu2 · oP12 · Pnma (62) — space group 62 and stoichiometry match
Candidate (dft_space_group_and_stoichiometry): PbCl2 · C23 · oP12 · Pnma (62) — space group 62 and stoichiometry match
Candidate (dft_space_group_and_stoichiometry): HgCl2 · C25 · oP12 · Pnma (62) — space group 62 and stoichiometry match
Candidate (dft_space_group_and_stoichiometry): Co2Si · C37 · oP12 · Pnma (62) — space group 62 and stoichiometry match
Candidate (dft_space_group_and_stoichiometry): Ca2Cu · oP12 · Pnma (62) — space group 62 and stoichiometry match
Candidate (dft_space_group_and_stoichiometry): Cs2S · oP12 · Pnma (62) — space group 62 and stoichiometry match
Stoichiometry: Mn 0.3333, Pd 0.6667
Stability: stable in 1 of 1 calculated diagram(s): 300–975.57 K, x(Pd) 0.66667–0.66667
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:mn-pd:mnpd2
tdb: tdb:MnPd-15Pov.tdb:MNPD2

TDB models of MNPD2 (1): PHASE and CONSTITUENT statements as written

MnPd-15Pov.tdb: MNPD2, type code %, sha256 6d1375354c547ac6…

82: PHASE MNPD2 % 2 1 2 !
83: CONST MNPD2 : MN : PD :  !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2015.09.003 E. Povoden-Karadeniz, P. Lang, F. Moszner, S. Pogatscher, A.V. Ruban, P.J. Uggowitzer, E. Kozeschnik, Calphad, 51, 314-33(2015).
assessment that models this phase

MNPD3_D023 (Mn–Pd)

Id: phase:mn-pd:mnpd3-d023; status assigned
Structure: Al3Zr · D0_23 · tI16 · I4/mmm (139); type st:d0-23-al3zr-ti16; tier A: standard phase name; confidence high
Caveat: partitioned order/disorder model in MnPd-15Pov.tdb also describes the disordered state
Stability: stable in 1 of 1 calculated diagram(s): 300–1080 K, x(Pd) 0.69965–0.75034
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:mn-pd:mnpd3-d023
tdb: tdb:MnPd-15Pov.tdb:MNPD3_D023

TDB models of MNPD3_D023 (1): PHASE and CONSTITUENT statements as written

MnPd-15Pov.tdb: MNPD3_D023, type code %A, sha256 6d1375354c547ac6…

87: PHASE MNPD3_D023 %A 2 0.25 0.75 !
88: CONST MNPD3_D023 : MN% PD : MN PD% : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2015.09.003 E. Povoden-Karadeniz, P. Lang, F. Moszner, S. Pogatscher, A.V. Ruban, P.J. Uggowitzer, E. Kozeschnik, Calphad, 51, 314-33(2015).
assessment that models this phase

MNPD4_L12 (Mn–Pd)

Id: phase:mn-pd:mnpd4-l12; status assigned
Structure: AuCu3 · L1_2 · cP4 · Pm-3m (221); type st:l1-2-aucu3-cp4; tier A: standard phase name; confidence high
Caveat: partitioned order/disorder model in MnPd-15Pov.tdb also describes the disordered state
Stability: stable in 1 of 1 calculated diagram(s): 300–1032.74 K, x(Pd) 0.81444–0.86009
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:mn-pd:mnpd4-l12
tdb: tdb:MnPd-15Pov.tdb:MNPD4_L12

TDB models of MNPD4_L12 (1): PHASE and CONSTITUENT statements as written

MnPd-15Pov.tdb: MNPD4_L12, type code %, sha256 6d1375354c547ac6…

92: PHASE MNPD4_L12 % 2 0.25 0.75 !
93: CONST MNPD4_L12 : MN% PD : MN PD% : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2015.09.003 E. Povoden-Karadeniz, P. Lang, F. Moszner, S. Pogatscher, A.V. Ruban, P.J. Uggowitzer, E. Kozeschnik, Calphad, 51, 314-33(2015).
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}
}