Mn–Sc phases

9 phases (tier A 7, liquid 1, needs_review 1); 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 · Mn–Sc system page · Markdown · field reference

Phases of the Mn–Sc system (9)
Phase	Structure	Basis	Stability (calculated)	TDB models
BCC_A2 phase:mn-sc:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 1409.14–2498.88 K, x(Sc) 0–1	1
CBCC_A12 phase:mn-sc:cbcc-a12	alpha-Mn · A12 · cI58 · I-43m (217)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–980 K, x(Sc) 0–0	1
CUB_A13 phase:mn-sc:cub-a13	beta-Mn · A13 · cP20 · P4_132 (213)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 980–1475.32 K, x(Sc) 0–0	1
FCC_A1 phase:mn-sc:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 1355.32–1475.32 K, x(Sc) 0–0.00066	1
HCP_A3 phase:mn-sc:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1607.34 K, x(Sc) 0.99708–1	1
LIQUID phase:mn-sc:liquid	liquid	liquid	stable in 1 of 1 calculated diagram(s): 1251.03–2500 K, x(Sc) 0–1	1
MN23SC6_D8A phase:mn-sc:mn23sc6-d8a	Mn23Th6 · D8_a · cF116 · Fm-3m (225)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1368.59 K, x(Sc) 0.2069–0.2069	1
MN2SC_C14 phase:mn-sc:mn2sc-c14	MgZn2 · C14 · hP12 · P6_3/mmc (194)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1553.88 K, x(Sc) 0.33333–0.33333	1
MNSC4 phase:mn-sc:mnsc4		needs_review	stable in 1 of 1 calculated diagram(s): 300–1363.64 K, x(Sc) 0.8–0.8	1

BCC_A2 (Mn–Sc)

Id: phase:mn-sc: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): 1409.14–2498.88 K, x(Sc) 0–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:mn-sc:bcc-a2
tdb: tdb:MnSc-98Pis-LB.tdb:BCC_A2

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

MnSc-98Pis-LB.tdb: BCC_A2, type code %B, sha256 a4f5e61221dfc0aa…

30: PHASE BCC_A2 %B 2 1 1.5 !
31: CONST BCC_A2 : MN% SC% : VA : !

Example references (1 of 1; assessments first):

doi:10.3139/ijmr-1998-0133 A. Pisch, R. Schmid-Fetzer, Z. Metallkd., 89, 700-703(1998).
assessment that models this phase

CBCC_A12 (Mn–Sc)

Id: phase:mn-sc: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
Stoichiometry: Mn 1.0000
Stability: stable in 1 of 1 calculated diagram(s): 300–980 K, x(Sc) 0–0
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:mn-sc:cbcc-a12
tdb: tdb:MnSc-98Pis-LB.tdb:CBCC_A12

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

MnSc-98Pis-LB.tdb: CBCC_A12, type code %A, sha256 a4f5e61221dfc0aa…

40: PHASE CBCC_A12 %A 2 1 1 !
41: CONST CBCC_A12 : MN : VA : !

Example references (1 of 1; assessments first):

doi:10.3139/ijmr-1998-0133 A. Pisch, R. Schmid-Fetzer, Z. Metallkd., 89, 700-703(1998).
assessment that models this phase

CUB_A13 (Mn–Sc)

Id: phase:mn-sc: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
Stoichiometry: Mn 1.0000
Stability: stable in 1 of 1 calculated diagram(s): 980–1475.32 K, x(Sc) 0–0
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:mn-sc:cub-a13
tdb: tdb:MnSc-98Pis-LB.tdb:CUB_A13

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

MnSc-98Pis-LB.tdb: CUB_A13, type code %, sha256 a4f5e61221dfc0aa…

45: PHASE CUB_A13 % 2 1 1 !
46: CONST CUB_A13 : MN : VA : !

Example references (1 of 1; assessments first):

doi:10.3139/ijmr-1998-0133 A. Pisch, R. Schmid-Fetzer, Z. Metallkd., 89, 700-703(1998).
assessment that models this phase

FCC_A1 (Mn–Sc)

Id: phase:mn-sc: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): 1355.32–1475.32 K, x(Sc) 0–0.00066
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:mn-sc:fcc-a1
tdb: tdb:MnSc-98Pis-LB.tdb:FCC_A1

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

MnSc-98Pis-LB.tdb: FCC_A1, type code %A, sha256 a4f5e61221dfc0aa…

25: PHASE FCC_A1 %A 2 1 1 !
26: CONST FCC_A1 : MN% SC : VA : !

Example references (1 of 1; assessments first):

doi:10.3139/ijmr-1998-0133 A. Pisch, R. Schmid-Fetzer, Z. Metallkd., 89, 700-703(1998).
assessment that models this phase

HCP_A3 (Mn–Sc)

Id: phase:mn-sc: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): 300–1607.34 K, x(Sc) 0.99708–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:mn-sc:hcp-a3
tdb: tdb:MnSc-98Pis-LB.tdb:HCP_A3

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

MnSc-98Pis-LB.tdb: HCP_A3, type code %, sha256 a4f5e61221dfc0aa…

35: PHASE HCP_A3 % 2 1 0.5 !
36: CONST HCP_A3 : MN SC% : VA : !

Example references (1 of 1; assessments first):

doi:10.3139/ijmr-1998-0133 A. Pisch, R. Schmid-Fetzer, Z. Metallkd., 89, 700-703(1998).
assessment that models this phase

LIQUID (Mn–Sc)

Id: phase:mn-sc:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 1251.03–2500 K, x(Sc) 0–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:mn-sc:liquid
tdb: tdb:MnSc-98Pis-LB.tdb:LIQUID

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

MnSc-98Pis-LB.tdb: LIQUID, type code %, sha256 a4f5e61221dfc0aa…

20: PHASE LIQUID:L % 1 1 !
21: CONST LIQUID:L : MN SC : !

Example references (1 of 1; assessments first):

doi:10.3139/ijmr-1998-0133 A. Pisch, R. Schmid-Fetzer, Z. Metallkd., 89, 700-703(1998).
assessment that models this phase

MN23SC6_D8A (Mn–Sc)

Id: phase:mn-sc:mn23sc6-d8a; status assigned
Structure: Mn23Th6 · D8_a · cF116 · Fm-3m (225); type st:d8-a-mn23th6-cf116; tier A: standard phase name; confidence high
Stoichiometry: Mn 0.7931, Sc 0.2069
Stability: stable in 1 of 1 calculated diagram(s): 300–1368.59 K, x(Sc) 0.2069–0.2069
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:mn-sc:mn23sc6-d8a
tdb: tdb:MnSc-98Pis-LB.tdb:MN23SC6_D8A

TDB models of MN23SC6_D8A (1): PHASE and CONSTITUENT statements as written

MnSc-98Pis-LB.tdb: MN23SC6_D8A, type code %, sha256 a4f5e61221dfc0aa…

50: PHASE MN23SC6_D8A % 2 23 6 !
51: CONST MN23SC6_D8A : MN : SC : !

Example references (1 of 1; assessments first):

doi:10.3139/ijmr-1998-0133 A. Pisch, R. Schmid-Fetzer, Z. Metallkd., 89, 700-703(1998).
assessment that models this phase

MN2SC_C14 (Mn–Sc)

Id: phase:mn-sc:mn2sc-c14; status assigned
Structure: MgZn2 · C14 · hP12 · P6_3/mmc (194); type st:c14-mgzn2-hp12; tier A: standard phase name; confidence high
Caveat: DFT agrees: on-hull mp-aaaaadal and oqmd-18873, space group 194
Stoichiometry: Mn 0.6667, Sc 0.3333
Stability: stable in 1 of 1 calculated diagram(s): 300–1553.88 K, x(Sc) 0.33333–0.33333
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:mn-sc:mn2sc-c14
mp: mp:mp-aaaaadal
oqmd: oqmd:oqmd-18873
tdb: tdb:MnSc-98Pis-LB.tdb:MN2SC_C14

TDB models of MN2SC_C14 (1): PHASE and CONSTITUENT statements as written

MnSc-98Pis-LB.tdb: MN2SC_C14, type code %, sha256 a4f5e61221dfc0aa…

55: PHASE MN2SC_C14 % 2 2 1 !
56: CONST MN2SC_C14 : MN : SC : !

Example references (1 of 1; assessments first):

doi:10.3139/ijmr-1998-0133 A. Pisch, R. Schmid-Fetzer, Z. Metallkd., 89, 700-703(1998).
assessment that models this phase

MNSC4 (Mn–Sc)

Id: phase:mn-sc:mnsc4; status needs_review
No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete
Candidate (sgte_mmc2): (MnSc4) — Hallstedt 2025 mmc2 row for MNSC4: MnSc4
Stoichiometry: Mn 0.2000, Sc 0.8000
Stability: stable in 1 of 1 calculated diagram(s): 300–1363.64 K, x(Sc) 0.8–0.8
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:mn-sc:mnsc4
tdb: tdb:MnSc-98Pis-LB.tdb:MNSC4

TDB models of MNSC4 (1): PHASE and CONSTITUENT statements as written

MnSc-98Pis-LB.tdb: MNSC4, type code %, sha256 a4f5e61221dfc0aa…

60: PHASE MNSC4 % 2 1 4 !
61: CONST MNSC4 : MN : SC : !

Example references (1 of 1; assessments first):

doi:10.3139/ijmr-1998-0133 A. Pisch, R. Schmid-Fetzer, Z. Metallkd., 89, 700-703(1998).
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}
}