Pb–Pu phases

15 phases (tier A 7, tier C 2, liquid 1, needs_review 5); 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 · full JSON · Pb–Pu system page · Markdown · field reference

Phases of the Pb–Pu system (15)
PhaseStructureBasisStability (calculated)Literature valuesTDB models
TETRAGONAL_A6
phase:pb-pu:a6-tetragonal
In · A6 · tI2 · I4/mmm (139)tier A: standard phase namestable in 1 of 1 calculated diagram(s): 736.46–755.67 K, x(Pu) 1–101
BCC_A2
phase:pb-pu:bcc-a2
W · A2 · cI2 · Im-3m (229)tier A: standard phase namestable in 1 of 1 calculated diagram(s): 740–3855.93 K, x(Pu) 0.75–101
FCC_A1
phase:pb-pu:fcc-a1
Cu · A1 · cF4 · Fm-3m (225)tier A: standard phase namestable in 1 of 1 calculated diagram(s): 300–736.46 K, x(Pu) 0–101
HCP_A3
phase:pb-pu:hcp-a3
Mg · A3 · hP2 · P6_3/mmc (194)tier A: standard phase namenot stable in 1 calculated diagram(s)01
LIQUID
phase:pb-pu:liquid
liquidliquidstable in 1 of 1 calculated diagram(s): 600.58–4000 K, x(Pu) 0–1141
PB2PU_ALPHA
phase:pb-pu:pb2pu-alpha
Ga2Hf · tI24 · I4_1/amd (141)tier C: assessor-stated (Hallstedt 2025 crystallographic table)stable in 1 of 1 calculated diagram(s): 300–1381.58 K, x(Pu) 0.33333–0.3333321
PB2PU_BETA
phase:pb-pu:pb2pu-beta
needs_reviewstable in 1 of 1 calculated diagram(s): 1381.58–1403.42 K, x(Pu) 0.33333–0.3333361
PB3PU_L12
phase:pb-pu:pb3pu-l12
AuCu3 · L1_2 · cP4 · Pm-3m (221)tier A: standard phase namestable in 1 of 1 calculated diagram(s): 300–1411.83 K, x(Pu) 0.25–0.2501
PB3PU5_D8M
phase:pb-pu:pb3pu5-d8m
W5Si3 · D8_m · tI32 · I4/mcm (140)tier A: standard phase namestable in 1 of 1 calculated diagram(s): 300–1608.58 K, x(Pu) 0.625–0.62541
PB4PU5
phase:pb-pu:pb4pu5
Ga4Ti5 · hP18 · P6_3/mcm (193)tier C: assessor-stated (Hallstedt 2025 crystallographic table)stable in 1 of 1 calculated diagram(s): 300–1658.28 K, x(Pu) 0.55556–0.5555661
PB5PU4
phase:pb-pu:pb5pu4
needs_reviewstable in 1 of 1 calculated diagram(s): 300–1461.97 K, x(Pu) 0.40602–0.4444441
PBPU3_L12
phase:pb-pu:pbpu3-l12
AuCu3 · L1_2 · cP4 · Pm-3m (221)tier A: standard phase namestable in 1 of 1 calculated diagram(s): 300–1170.74 K, x(Pu) 0.75–0.7521
ALPHA_PU
phase:pb-pu:pu-alpha
needs_reviewstable in 1 of 1 calculated diagram(s): 300–397.62 K, x(Pu) 1–101
BETA_PU
phase:pb-pu:pu-beta
needs_reviewstable in 1 of 1 calculated diagram(s): 397.62–487.9 K, x(Pu) 1–101
GAMMA_PU
phase:pb-pu:pu-gamma
needs_reviewstable in 1 of 1 calculated diagram(s): 487.9–728.06 K, x(Pu) 1–101

TETRAGONAL_A6 (Pb–Pu)

Names (2): corpus: corpus:phase:pb-pu:a6-tetragonal
tdb: tdb:PbPu-10Li.tdb:TETRAGONAL_A6

TDB models of TETRAGONAL_A6 (1): PHASE and CONSTITUENT statements as written

PbPu-10Li.tdb: TETRAGONAL_A6, type code %, sha256 6278a37bf7a5c886…

39: PHASE TETRAGONAL_A6 % 1 1 !
40: CONST TETRAGONAL_A6 : PB PU% : !

Example references (1 of 1; assessments first):

BCC_A2 (Pb–Pu)

Names (2): corpus: corpus:phase:pb-pu:bcc-a2
tdb: tdb:PbPu-10Li.tdb:BCC_A2

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

PbPu-10Li.tdb: BCC_A2, type code %B, sha256 6278a37bf7a5c886…

29: PHASE BCC_A2 %B 2 1 3 !
30: CONST BCC_A2 : PB PU% : VA : !

Example references (1 of 1; assessments first):

FCC_A1 (Pb–Pu)

Names (2): corpus: corpus:phase:pb-pu:fcc-a1
tdb: tdb:PbPu-10Li.tdb:FCC_A1

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

PbPu-10Li.tdb: FCC_A1, type code %A, sha256 6278a37bf7a5c886…

24: PHASE FCC_A1 %A 2 1 1 !
25: CONST FCC_A1 : PB% PU% : VA : !

Example references (1 of 1; assessments first):

HCP_A3 (Pb–Pu)

Names (2): corpus: corpus:phase:pb-pu:hcp-a3
tdb: tdb:PbPu-10Li.tdb:HCP_A3

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

PbPu-10Li.tdb: HCP_A3, type code %A, sha256 6278a37bf7a5c886…

34: PHASE HCP_A3 %A 2 1 0.5 !
35: CONST HCP_A3 : PB : VA: !

Example references (1 of 1; assessments first):

LIQUID (Pb–Pu)

Names (3): corpus: corpus:phase:pb-pu:liquid
paper: paper:10.1016/j.jnucmat.2010.02.002:L
tdb: tdb:PbPu-10Li.tdb:LIQUID

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

PbPu-10Li.tdb: LIQUID, type code %, sha256 6278a37bf7a5c886…

19: PHASE LIQUID:L % 1 1 !
20: CONST LIQUID:L : PB PU : !

Example references (1 of 1; assessments first):

PB2PU_ALPHA (Pb–Pu)

Names (3): corpus: corpus:phase:pb-pu:pb2pu-alpha
paper: paper:10.1016/j.jnucmat.2010.02.002:αPb2Pu
tdb: tdb:PbPu-10Li.tdb:PB2PU_ALPHA

TDB models of PB2PU_ALPHA (1): PHASE and CONSTITUENT statements as written

PbPu-10Li.tdb: PB2PU_ALPHA, type code %, sha256 6278a37bf7a5c886…

64: PHASE PB2PU_ALPHA % 2 2 1 !
65: CONST PB2PU_ALPHA : PB : PU : !

Example references (1 of 1; assessments first):

PB2PU_BETA (Pb–Pu)

Names (3): corpus: corpus:phase:pb-pu:pb2pu-beta
paper: paper:10.1016/j.jnucmat.2010.02.002:βPb2Pu
tdb: tdb:PbPu-10Li.tdb:PB2PU_BETA

TDB models of PB2PU_BETA (1): PHASE and CONSTITUENT statements as written

PbPu-10Li.tdb: PB2PU_BETA, type code %, sha256 6278a37bf7a5c886…

69: PHASE PB2PU_BETA % 2 2 1 !
70: CONST PB2PU_BETA : PB : PU : !

Example references (1 of 1; assessments first):

PB3PU_L12 (Pb–Pu)

Names (4): corpus: corpus:phase:pb-pu:pb3pu-l12
mp: mp:mp-aaaabfii
oqmd: oqmd:oqmd-17918
tdb: tdb:PbPu-10Li.tdb:PB3PU_L12

TDB models of PB3PU_L12 (1): PHASE and CONSTITUENT statements as written

PbPu-10Li.tdb: PB3PU_L12, type code %, sha256 6278a37bf7a5c886…

59: PHASE PB3PU_L12 % 2 3 1 !
60: CONST PB3PU_L12 : PB : PU : !

Example references (1 of 1; assessments first):

PB3PU5_D8M (Pb–Pu)

Names (3): corpus: corpus:phase:pb-pu:pb3pu5-d8m
paper: paper:10.1016/j.jnucmat.2010.02.002:Pb3Pu5
tdb: tdb:PbPu-10Li.tdb:PB3PU5_D8M

TDB models of PB3PU5_D8M (1): PHASE and CONSTITUENT statements as written

PbPu-10Li.tdb: PB3PU5_D8M, type code %, sha256 6278a37bf7a5c886…

84: PHASE PB3PU5_D8M % 2 3 5 !
85: CONST PB3PU5_D8M : PB : PU : !

Example references (1 of 1; assessments first):

PB4PU5 (Pb–Pu)

Names (3): corpus: corpus:phase:pb-pu:pb4pu5
paper: paper:10.1016/j.jnucmat.2010.02.002:Pb4Pu5
tdb: tdb:PbPu-10Li.tdb:PB4PU5

TDB models of PB4PU5 (1): PHASE and CONSTITUENT statements as written

PbPu-10Li.tdb: PB4PU5, type code %, sha256 6278a37bf7a5c886…

79: PHASE PB4PU5 % 2 4 5 !
80: CONST PB4PU5 : PB : PU : !

Example references (1 of 1; assessments first):

PB5PU4 (Pb–Pu)

Names (3): corpus: corpus:phase:pb-pu:pb5pu4
paper: paper:10.1016/j.jnucmat.2010.02.002:Pb5Pu4
tdb: tdb:PbPu-10Li.tdb:PB5PU4

TDB models of PB5PU4 (1): PHASE and CONSTITUENT statements as written

PbPu-10Li.tdb: PB5PU4, type code %, sha256 6278a37bf7a5c886…

74: PHASE PB5PU4 % 2 5 4 !
75: CONST PB5PU4 : PB% PU : PB PU% : !

Example references (1 of 1; assessments first):

PBPU3_L12 (Pb–Pu)

Names (5): corpus: corpus:phase:pb-pu:pbpu3-l12
mp: mp:mp-aaaabdzi
oqmd: oqmd:oqmd-17917
paper: paper:10.1016/j.jnucmat.2010.02.002:PbPu3
tdb: tdb:PbPu-10Li.tdb:PBPU3_L12

TDB models of PBPU3_L12 (1): PHASE and CONSTITUENT statements as written

PbPu-10Li.tdb: PBPU3_L12, type code %, sha256 6278a37bf7a5c886…

89: PHASE PBPU3_L12 % 2 1 3 !
90: CONST PBPU3_L12 : PB : PU : !

Example references (1 of 1; assessments first):

ALPHA_PU (Pb–Pu)

Names (2): corpus: corpus:phase:pb-pu:pu-alpha
tdb: tdb:PbPu-10Li.tdb:ALPHA_PU

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

PbPu-10Li.tdb: ALPHA_PU, type code %, sha256 6278a37bf7a5c886…

44: PHASE ALPHA_PU % 1 1 !
45: CONST ALPHA_PU : PU : !

Example references (1 of 1; assessments first):

BETA_PU (Pb–Pu)

Names (2): corpus: corpus:phase:pb-pu:pu-beta
tdb: tdb:PbPu-10Li.tdb:BETA_PU

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

PbPu-10Li.tdb: BETA_PU, type code %, sha256 6278a37bf7a5c886…

49: PHASE BETA_PU % 1 1 !
50: CONST BETA_PU : PU : !

Example references (1 of 1; assessments first):

GAMMA_PU (Pb–Pu)

Names (2): corpus: corpus:phase:pb-pu:pu-gamma
tdb: tdb:PbPu-10Li.tdb:GAMMA_PU

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

PbPu-10Li.tdb: GAMMA_PU, type code %, sha256 6278a37bf7a5c886…

54: PHASE GAMMA_PU % 1 1 !
55: CONST GAMMA_PU : PU : !

Example references (1 of 1; assessments first):