Gd–Pb phases

11 phases (tier A 5, tier C 1, liquid 1, needs_review 4); 11 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 · Gd–Pb system page · Markdown · field reference

Phases of the Gd–Pb system (11)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
BCC_A2 phase:gd-pb:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 2 of 2 calculated diagram(s): 1475.31–1587.12 K, x(Pb) 0–0.01523	5	2
FCC_A1 phase:gd-pb:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	stable in 2 of 2 calculated diagram(s): 300–2499.36 K, x(Pb) 1–1	4	2
GD11PB10 phase:gd-pb:gd11pb10		needs_review	stable in 2 of 2 calculated diagram(s): 300–1498.3 K, x(Pb) 0.47619–0.47619	6	2
GD5PB3_D88 phase:gd-pb:gd5pb3-d88	Mn5Si3 · D8_8 · hP16 · P6_3/mcm (193)	tier A: standard phase name	stable in 2 of 2 calculated diagram(s): 300–1977.66 K, x(Pb) 0.375–0.39008	8	2
GD5PB4_HT phase:gd-pb:gd5pb4-ht		needs_review	stable in 2 of 2 calculated diagram(s): 1682.93–1735.38 K, x(Pb) 0.44444–0.44444	4	2
GD5PB4_LT phase:gd-pb:gd5pb4-lt	Ge4Sm5 · oP36 · Pnma (62)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 2 of 2 calculated diagram(s): 300–1682.99 K, x(Pb) 0.44444–0.44444	5	2
GD6PB7 phase:gd-pb:gd6pb7		needs_review	stable in 2 of 2 calculated diagram(s): 300–1438.24 K, x(Pb) 0.53846–0.53846	6	2
GDPB2 phase:gd-pb:gdpb2		needs_review	stable in 2 of 2 calculated diagram(s): 300–1285.65 K, x(Pb) 0.66667–0.66667	6	2
GDPB3_L12 phase:gd-pb:gdpb3-l12	AuCu3 · L1_2 · cP4 · Pm-3m (221)	tier A: standard phase name	stable in 2 of 2 calculated diagram(s): 300–1242.49 K, x(Pb) 0.75–0.75	5	2
HCP_A3 phase:gd-pb:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	stable in 2 of 2 calculated diagram(s): 300–1515.05 K, x(Pb) 0–0.00994	6	2
LIQUID phase:gd-pb:liquid	liquid	liquid	stable in 2 of 2 calculated diagram(s): 600.61–2500 K, x(Pb) 0–1	30	2

BCC_A2 (Gd–Pb)

Id: phase:gd-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 2 of 2 calculated diagram(s): 1475.31–1587.12 K, x(Pb) 0–0.01523
Literature: 5 values (5 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:gd-pb:bcc-a2
paper: paper:10.1016/j.calphad.2013.06.002:βGd
tdb: tdb:GdPb-13Cui.tdb:BCC_A2, tdb:GdPb-14Idd.tdb:BCC_A2

TDB models of BCC_A2 (2): PHASE and CONSTITUENT statements as written

GdPb-13Cui.tdb: BCC_A2, type code %B, sha256 bd8c5551081be084…

43: PHASE BCC_A2 %B 2 1 3 !
44: CONST BCC_A2 : GD% PB : VA : !

GdPb-14Idd.tdb: BCC_A2, type code %B, sha256 e76d75789170c7fd…

38: PHASE BCC_A2 %B 2 1 3 !
39: CONST BCC_A2 : GD% PB : VA : !

Example references (3 of 3; assessments first):

doi:10.1016/j.calphad.2013.06.002 Jiaxin Cui, Cuiping Guo, Changrong Li, Zhenmin Du, Thermodynamic optimization of the Gd–Pb system using random solution and associate models, Calphad 42, 1-5 (2013).
assessment that models this phase; reports values for this phase
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
doi:10.1016/0364-5916(83)90030-5 A.K. Niessen, F.R. de Boer, R. Boom, P.F. de Chatel, W.C.M. Mattens, A.R. Miedema, CALPHAD 7 (1983) 51–70.
cited as the source of values for this phase

FCC_A1 (Gd–Pb)

Id: phase:gd-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 2 of 2 calculated diagram(s): 300–2499.36 K, x(Pb) 1–1
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:gd-pb:fcc-a1
paper: paper:10.1016/j.calphad.2013.06.002:Pb
tdb: tdb:GdPb-13Cui.tdb:FCC_A1, tdb:GdPb-14Idd.tdb:FCC_A1

TDB models of FCC_A1 (2): PHASE and CONSTITUENT statements as written

GdPb-13Cui.tdb: FCC_A1, type code %A, sha256 bd8c5551081be084…

38: PHASE FCC_A1 %A 2 1 1 !
39: CONST FCC_A1 : GD PB% : VA : !

GdPb-14Idd.tdb: FCC_A1, type code %A, sha256 e76d75789170c7fd…

33: PHASE FCC_A1 %A 2 1 1 !
34: CONST FCC_A1 : GD PB% : VA : !

Example references (3 of 3; assessments first):

doi:10.1016/j.calphad.2013.06.002 Jiaxin Cui, Cuiping Guo, Changrong Li, Zhenmin Du, Thermodynamic optimization of the Gd–Pb system using random solution and associate models, Calphad 42, 1-5 (2013).
assessment that models this phase; reports values for this phase
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
doi:10.1016/0364-5916(83)90030-5 A.K. Niessen, F.R. de Boer, R. Boom, P.F. de Chatel, W.C.M. Mattens, A.R. Miedema, CALPHAD 7 (1983) 51–70.
cited as the source of values for this phase

GD11PB10 (Gd–Pb)

Id: phase:gd-pb:gd11pb10; status needs_review
No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete
Candidate (literature_printed): (Gd11Pb10) · ? — printed with a label mapped to this phase
Candidate (sgte_mmc2): (Gd11Pb10) — Hallstedt 2025 mmc2 row for GD11PB10: Gd11Pb10
Stoichiometry: Gd 0.5238, Pb 0.4762
Stability: stable in 2 of 2 calculated diagram(s): 300–1498.3 K, x(Pb) 0.47619–0.47619
Literature: 6 values (6 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:gd-pb:gd11pb10
paper: paper:10.1016/j.calphad.2013.06.002:Gd11Pb10
tdb: tdb:GdPb-13Cui.tdb:GD11PB10, tdb:GdPb-14Idd.tdb:GD11PB10

TDB models of GD11PB10 (2): PHASE and CONSTITUENT statements as written

GdPb-13Cui.tdb: GD11PB10, type code %, sha256 bd8c5551081be084…

68: PHASE GD11PB10 % 2 11 10 !
69: CONST GD11PB10 : GD : PB : !

GdPb-14Idd.tdb: GD11PB10, type code %, sha256 e76d75789170c7fd…

63: PHASE GD11PB10 % 2 11 10 !
64: CONST GD11PB10 : GD : PB : !

Example references (3 of 3; assessments first):

doi:10.1016/j.calphad.2013.06.002 Jiaxin Cui, Cuiping Guo, Changrong Li, Zhenmin Du, Thermodynamic optimization of the Gd–Pb system using random solution and associate models, Calphad 42, 1-5 (2013).
assessment that models this phase; reports values for this phase
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
doi:10.1016/0364-5916(83)90030-5 A.K. Niessen, F.R. de Boer, R. Boom, P.F. de Chatel, W.C.M. Mattens, A.R. Miedema, CALPHAD 7 (1983) 51–70.
cited as the source of values for this phase

GD5PB3_D88 (Gd–Pb)

Id: phase:gd-pb:gd5pb3-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 2 of 2 calculated diagram(s): 300–1977.66 K, x(Pb) 0.375–0.39008
Literature: 8 values (8 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:gd-pb:gd5pb3-d88
paper: paper:10.1016/j.calphad.2013.06.002:Gd5Pb3
tdb: tdb:GdPb-13Cui.tdb:GD5PB3_D88, tdb:GdPb-14Idd.tdb:GD5PB3_D88

TDB models of GD5PB3_D88 (2): PHASE and CONSTITUENT statements as written

GdPb-13Cui.tdb: GD5PB3_D88, type code %, sha256 bd8c5551081be084…

53: PHASE GD5PB3_D88 % 2 5 3 !
54: CONST GD5PB3_D88 : GD : PB : !

GdPb-14Idd.tdb: GD5PB3_D88, type code %, sha256 e76d75789170c7fd…

48: PHASE GD5PB3_D88 % 2 5 3 !
49: CONST GD5PB3_D88 : GD% PB : PB : !

Example references (3 of 3; assessments first):

doi:10.1016/j.calphad.2013.06.002 Jiaxin Cui, Cuiping Guo, Changrong Li, Zhenmin Du, Thermodynamic optimization of the Gd–Pb system using random solution and associate models, Calphad 42, 1-5 (2013).
assessment that models this phase; reports values for this phase
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
doi:10.1016/0364-5916(83)90030-5 A.K. Niessen, F.R. de Boer, R. Boom, P.F. de Chatel, W.C.M. Mattens, A.R. Miedema, CALPHAD 7 (1983) 51–70.
cited as the source of values for this phase

GD5PB4_HT (Gd–Pb)

Id: phase:gd-pb:gd5pb4-ht; status needs_review
No structure assigned. Why: no_structure_token; polymorph_family:other phases of this system have the same composition; sgte_mmc2_row_incomplete
Candidate (dft_oqmd): Pnma (62) — on-hull OQMD Gd5 Pb4 at x(PB)=0.4444
Candidate (literature_printed): (Gd5Pb4-ht) · ? — printed with a label mapped to this phase
Candidate (sgte_mmc2): (Gd5Pb4-ht) — Hallstedt 2025 mmc2 row for GD5PB4_HT: Gd5Pb4 (high T)
Stoichiometry: Gd 0.5556, Pb 0.4444
Stability: stable in 2 of 2 calculated diagram(s): 1682.93–1735.38 K, x(Pb) 0.44444–0.44444
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:gd-pb:gd5pb4-ht
paper: paper:10.1016/j.calphad.2013.06.002:βGd5Pb4
tdb: tdb:GdPb-13Cui.tdb:GD5PB4_HT, tdb:GdPb-14Idd.tdb:GD5PB4_HT

TDB models of GD5PB4_HT (2): PHASE and CONSTITUENT statements as written

GdPb-13Cui.tdb: GD5PB4_HT, type code %, sha256 bd8c5551081be084…

63: PHASE GD5PB4_HT % 2 5 4 !
64: CONST GD5PB4_HT : GD : PB : !

GdPb-14Idd.tdb: GD5PB4_HT, type code %, sha256 e76d75789170c7fd…

58: PHASE GD5PB4_HT % 2 5 4 !
59: CONST GD5PB4_HT : GD : PB : !

Example references (3 of 3; assessments first):

doi:10.1016/j.calphad.2013.06.002 Jiaxin Cui, Cuiping Guo, Changrong Li, Zhenmin Du, Thermodynamic optimization of the Gd–Pb system using random solution and associate models, Calphad 42, 1-5 (2013).
assessment that models this phase; reports values for this phase
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
doi:10.1016/0364-5916(83)90030-5 A.K. Niessen, F.R. de Boer, R. Boom, P.F. de Chatel, W.C.M. Mattens, A.R. Miedema, CALPHAD 7 (1983) 51–70.
cited as the source of values for this phase

GD5PB4_LT (Gd–Pb)

Id: phase:gd-pb:gd5pb4-lt; 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 (no_structure_token, polymorph_family:other phases of this system have the same composition); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Gd 0.5556, Pb 0.4444
Stability: stable in 2 of 2 calculated diagram(s): 300–1682.99 K, x(Pb) 0.44444–0.44444
Literature: 5 values (5 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:gd-pb:gd5pb4-lt
paper: paper:10.1016/j.calphad.2013.06.002:αGd5Pb4
tdb: tdb:GdPb-13Cui.tdb:GD5PB4_LT, tdb:GdPb-14Idd.tdb:GD5PB4_LT

TDB models of GD5PB4_LT (2): PHASE and CONSTITUENT statements as written

GdPb-13Cui.tdb: GD5PB4_LT, type code %, sha256 bd8c5551081be084…

58: PHASE GD5PB4_LT % 2 5 4 !
59: CONST GD5PB4_LT : GD : PB : !

GdPb-14Idd.tdb: GD5PB4_LT, type code %, sha256 e76d75789170c7fd…

53: PHASE GD5PB4_LT % 2 5 4 !
54: CONST GD5PB4_LT : GD : PB : !

Example references (3 of 3; assessments first):

doi:10.1016/j.calphad.2013.06.002 Jiaxin Cui, Cuiping Guo, Changrong Li, Zhenmin Du, Thermodynamic optimization of the Gd–Pb system using random solution and associate models, Calphad 42, 1-5 (2013).
assessment that models this phase; reports values for this phase
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
doi:10.1016/0364-5916(83)90030-5 A.K. Niessen, F.R. de Boer, R. Boom, P.F. de Chatel, W.C.M. Mattens, A.R. Miedema, CALPHAD 7 (1983) 51–70.
cited as the source of values for this phase

GD6PB7 (Gd–Pb)

Id: phase:gd-pb:gd6pb7; status needs_review
No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete
Candidate (literature_printed): (Gd6Pb7) · ? — printed with a label mapped to this phase
Candidate (sgte_mmc2): (Gd6Pb7) — Hallstedt 2025 mmc2 row for GD6PB7: Gd6Pb7
Stoichiometry: Gd 0.4615, Pb 0.5385
Stability: stable in 2 of 2 calculated diagram(s): 300–1438.24 K, x(Pb) 0.53846–0.53846
Literature: 6 values (6 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:gd-pb:gd6pb7
paper: paper:10.1016/j.calphad.2013.06.002:Gd6Pb7
tdb: tdb:GdPb-13Cui.tdb:GD6PB7, tdb:GdPb-14Idd.tdb:GD6PB7

TDB models of GD6PB7 (2): PHASE and CONSTITUENT statements as written

GdPb-13Cui.tdb: GD6PB7, type code %, sha256 bd8c5551081be084…

73: PHASE GD6PB7 % 2 6 7 !
74: CONST GD6PB7 : GD : PB : !

GdPb-14Idd.tdb: GD6PB7, type code %, sha256 e76d75789170c7fd…

68: PHASE GD6PB7 % 2 6 7 !
69: CONST GD6PB7 : GD : PB : !

Example references (3 of 3; assessments first):

doi:10.1016/j.calphad.2013.06.002 Jiaxin Cui, Cuiping Guo, Changrong Li, Zhenmin Du, Thermodynamic optimization of the Gd–Pb system using random solution and associate models, Calphad 42, 1-5 (2013).
assessment that models this phase; reports values for this phase
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
doi:10.1016/0364-5916(83)90030-5 A.K. Niessen, F.R. de Boer, R. Boom, P.F. de Chatel, W.C.M. Mattens, A.R. Miedema, CALPHAD 7 (1983) 51–70.
cited as the source of values for this phase

GDPB2 (Gd–Pb)

Id: phase:gd-pb:gdpb2; status needs_review
No structure assigned. Why: no_on_hull_entry_in_mp; no_structure_token; sgte_mmc2_row_incomplete
Candidate (dft_oqmd): Amm2 (38) — on-hull OQMD Gd1 Pb2 at x(PB)=0.6667
Candidate (literature_printed): (GdPb2) · ? — printed with a label mapped to this phase
Candidate (sgte_mmc2): (GdPb2) — Hallstedt 2025 mmc2 row for GDPB2: GdPb2
Stoichiometry: Gd 0.3333, Pb 0.6667
Stability: stable in 2 of 2 calculated diagram(s): 300–1285.65 K, x(Pb) 0.66667–0.66667
Literature: 6 values (6 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:gd-pb:gdpb2
paper: paper:10.1016/j.calphad.2013.06.002:GdPb2
tdb: tdb:GdPb-13Cui.tdb:GDPB2, tdb:GdPb-14Idd.tdb:GDPB2

TDB models of GDPB2 (2): PHASE and CONSTITUENT statements as written

GdPb-13Cui.tdb: GDPB2, type code %, sha256 bd8c5551081be084…

78: PHASE GDPB2 % 2 1 2 !
79: CONST GDPB2 : GD : PB : !

GdPb-14Idd.tdb: GDPB2, type code %, sha256 e76d75789170c7fd…

73: PHASE GDPB2 % 2 1 2 !
74: CONST GDPB2 : GD : PB : !

Example references (3 of 3; assessments first):

doi:10.1016/j.calphad.2013.06.002 Jiaxin Cui, Cuiping Guo, Changrong Li, Zhenmin Du, Thermodynamic optimization of the Gd–Pb system using random solution and associate models, Calphad 42, 1-5 (2013).
assessment that models this phase; reports values for this phase
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
doi:10.1016/0364-5916(83)90030-5 A.K. Niessen, F.R. de Boer, R. Boom, P.F. de Chatel, W.C.M. Mattens, A.R. Miedema, CALPHAD 7 (1983) 51–70.
cited as the source of values for this phase

GDPB3_L12 (Gd–Pb)

Id: phase:gd-pb:gdpb3-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: Gd 0.2500, Pb 0.7500
Stability: stable in 2 of 2 calculated diagram(s): 300–1242.49 K, x(Pb) 0.75–0.75
Literature: 5 values (5 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:gd-pb:gdpb3-l12
paper: paper:10.1016/j.calphad.2013.06.002:GdPb3
tdb: tdb:GdPb-13Cui.tdb:GDPB3_L12, tdb:GdPb-14Idd.tdb:GDPB3_L12

TDB models of GDPB3_L12 (2): PHASE and CONSTITUENT statements as written

GdPb-13Cui.tdb: GDPB3_L12, type code %, sha256 bd8c5551081be084…

83: PHASE GDPB3_L12 % 2 1 3 !
84: CONST GDPB3_L12 : GD : PB : !

GdPb-14Idd.tdb: GDPB3_L12, type code %, sha256 e76d75789170c7fd…

78: PHASE GDPB3_L12 % 2 1 3 !
79: CONST GDPB3_L12 : GD : PB : !

Example references (3 of 3; assessments first):

doi:10.1016/j.calphad.2013.06.002 Jiaxin Cui, Cuiping Guo, Changrong Li, Zhenmin Du, Thermodynamic optimization of the Gd–Pb system using random solution and associate models, Calphad 42, 1-5 (2013).
assessment that models this phase; reports values for this phase
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
doi:10.1016/0364-5916(83)90030-5 A.K. Niessen, F.R. de Boer, R. Boom, P.F. de Chatel, W.C.M. Mattens, A.R. Miedema, CALPHAD 7 (1983) 51–70.
cited as the source of values for this phase

HCP_A3 (Gd–Pb)

Id: phase:gd-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 2 of 2 calculated diagram(s): 300–1515.05 K, x(Pb) 0–0.00994
Literature: 6 values (6 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:gd-pb:hcp-a3
paper: paper:10.1016/j.calphad.2013.06.002:αGd
tdb: tdb:GdPb-13Cui.tdb:HCP_A3, tdb:GdPb-14Idd.tdb:HCP_A3

TDB models of HCP_A3 (2): PHASE and CONSTITUENT statements as written

GdPb-13Cui.tdb: HCP_A3, type code %A, sha256 bd8c5551081be084…

48: PHASE HCP_A3 %A 2 1 0.5 !
49: CONST HCP_A3 : GD% PB : VA : !

GdPb-14Idd.tdb: HCP_A3, type code %A, sha256 e76d75789170c7fd…

43: PHASE HCP_A3 %A 2 1 0.5 !
44: CONST HCP_A3 : GD% PB : VA : !

Example references (3 of 3; assessments first):

doi:10.1016/j.calphad.2013.06.002 Jiaxin Cui, Cuiping Guo, Changrong Li, Zhenmin Du, Thermodynamic optimization of the Gd–Pb system using random solution and associate models, Calphad 42, 1-5 (2013).
assessment that models this phase; reports values for this phase
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
doi:10.1016/0364-5916(83)90030-5 A.K. Niessen, F.R. de Boer, R. Boom, P.F. de Chatel, W.C.M. Mattens, A.R. Miedema, CALPHAD 7 (1983) 51–70.
cited as the source of values for this phase

LIQUID (Gd–Pb)

Id: phase:gd-pb:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 2 of 2 calculated diagram(s): 600.61–2500 K, x(Pb) 0–1
Literature: 30 values (30 accepted) from 2 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:gd-pb:liquid
paper: paper:10.1016/j.calphad.2013.06.002:L, paper:10.1016/j.jallcom.2013.11.131:liquid
tdb: tdb:GdPb-13Cui.tdb:LIQUID, tdb:GdPb-14Idd.tdb:LIQUID

TDB models of LIQUID (2): PHASE and CONSTITUENT statements as written

GdPb-13Cui.tdb: LIQUID, type code %, sha256 bd8c5551081be084…

33: PHASE LIQUID:L % 1 1 !
34: CONST LIQUID:L : GD GD5PB3 PB : !

GdPb-14Idd.tdb: LIQUID, type code %, sha256 e76d75789170c7fd…

28: PHASE LIQUID:L % 1 1 !
29: CONST LIQUID:L : GD PB : !

Example references (3 of 3; assessments first):

doi:10.1016/j.calphad.2013.06.002 Jiaxin Cui, Cuiping Guo, Changrong Li, Zhenmin Du, Thermodynamic optimization of the Gd–Pb system using random solution and associate models, Calphad 42, 1-5 (2013).
assessment that models this phase; reports values for this phase
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; reports values for this phase
doi:10.1016/0364-5916(83)90030-5 A.K. Niessen, F.R. de Boer, R. Boom, P.F. de Chatel, W.C.M. Mattens, A.R. Miedema, CALPHAD 7 (1983) 51–70.
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). 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}
}