Au–Hf phases

12 phases (tier A 6, tier C 3, 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 · Au–Hf system page · Markdown · field reference

Phases of the Au–Hf system (12)
PhaseStructureBasisStability (calculated)Literature valuesTDB models
AU10HF7
phase:au-hf:au10hf7
Ni10Zr7 · oC68 · Cmce (64)tier C: assessor-stated (Hallstedt 2025 crystallographic table)stable in 1 of 1 calculated diagram(s): 300–1785.98 K, x(Hf) 0.41176–0.4117641
AU2HF_C11B
phase:au-hf:au2hf-c11b
MoSi2 · C11_b · tI6 · I4/mmm (139)tier A: standard phase namestable in 1 of 1 calculated diagram(s): 300–1926.8 K, x(Hf) 0.29302–0.3333381
AU3HF_D0A
phase:au-hf:au3hf-d0a
beta-Cu3Ti · D0_a · oP8 · Pmmn (59)tier A: standard phase namestable in 1 of 1 calculated diagram(s): 300–1815.44 K, x(Hf) 0.25–0.2541
AU4HF
phase:au-hf:au4hf
Au4Zr · oP20 · Pnma (62)tier C: assessor-stated (Hallstedt 2025 crystallographic table)stable in 1 of 1 calculated diagram(s): 300–1570.94 K, x(Hf) 0.2–0.241
AU5HF_D1A
phase:au-hf:au5hf-d1a
needs_reviewstable in 1 of 1 calculated diagram(s): 300–1418.11 K, x(Hf) 0.14625–0.1666741
AUHF_B11
phase:au-hf:auhf-b11
CuTi-gamma · B11 · tP4 · P4/nmm (129)tier A: standard phase namestable in 1 of 1 calculated diagram(s): 300–1386.92 K, x(Hf) 0.47532–0.541
AUHF_BETA
phase:au-hf:auhf-beta
needs_reviewstable in 1 of 1 calculated diagram(s): 1303.96–4000 K, x(Hf) 0–0.49993121
AUHF2
phase:au-hf:auhf2
CuZr2 · tI6 · I4/mmm (139)tier C: assessor-stated (Hallstedt 2025 crystallographic table)stable in 1 of 1 calculated diagram(s): 300–1793.02 K, x(Hf) 0.66667–0.66667101
BCC_A2
phase:au-hf:bcc-a2
W · A2 · cI2 · Im-3m (229)tier A: standard phase namestable in 1 of 1 calculated diagram(s): 1559.13–3999.68 K, x(Hf) 0.87087–141
FCC_A1
phase:au-hf:fcc-a1
Cu · A1 · cF4 · Fm-3m (225)tier A: standard phase namestable in 1 of 1 calculated diagram(s): 300–1373.06 K, x(Hf) 0–0.0928621
HCP_A3
phase:au-hf:hcp-a3
Mg · A3 · hP2 · P6_3/mmc (194)tier A: standard phase namestable in 1 of 1 calculated diagram(s): 300–2504.13 K, x(Hf) 0.97148–121
LIQUID
phase:au-hf:liquid
liquidliquidstable in 1 of 1 calculated diagram(s): 1337.33–4000 K, x(Hf) 0–1201

AU10HF7 (Au–Hf)

Names (3): corpus: corpus:phase:au-hf:au10hf7
paper: paper:10.1016/s0925-8388(02)01293-8:Au10Hf7
tdb: tdb:AuHf-03Du-LB.tdb:AU10HF7

TDB models of AU10HF7 (1): PHASE and CONSTITUENT statements as written

AuHf-03Du-LB.tdb: AU10HF7, type code %, sha256 3f1b621c7e2af58a…

67: PHASE AU10HF7 % 2 10 7 !
68: CONST AU10HF7 : AU : HF : !

Example references (2 of 2; assessments first):

AU2HF_C11B (Au–Hf)

Names (3): corpus: corpus:phase:au-hf:au2hf-c11b
paper: paper:10.1016/s0925-8388(02)01293-8:Au2Hf
tdb: tdb:AuHf-03Du-LB.tdb:AU2HF_C11B

TDB models of AU2HF_C11B (1): PHASE and CONSTITUENT statements as written

AuHf-03Du-LB.tdb: AU2HF_C11B, type code %, sha256 3f1b621c7e2af58a…

62: PHASE AU2HF_C11B % 2 2 1 !
63: CONST AU2HF_C11B : AU : AU HF% : !

Example references (2 of 2; assessments first):

AU3HF_D0A (Au–Hf)

Names (5): corpus: corpus:phase:au-hf:au3hf-d0a
mp: mp:mp-aaacjkpk
oqmd: oqmd:oqmd-28169
paper: paper:10.1016/s0925-8388(02)01293-8:Au3Hf
tdb: tdb:AuHf-03Du-LB.tdb:AU3HF_D0A

TDB models of AU3HF_D0A (1): PHASE and CONSTITUENT statements as written

AuHf-03Du-LB.tdb: AU3HF_D0A, type code %, sha256 3f1b621c7e2af58a…

57: PHASE AU3HF_D0A % 2 3 1 !
58: CONST AU3HF_D0A : AU : HF : !

Example references (2 of 2; assessments first):

AU4HF (Au–Hf)

Names (3): corpus: corpus:phase:au-hf:au4hf
paper: paper:10.1016/s0925-8388(02)01293-8:Au4Hf
tdb: tdb:AuHf-03Du-LB.tdb:AU4HF

TDB models of AU4HF (1): PHASE and CONSTITUENT statements as written

AuHf-03Du-LB.tdb: AU4HF, type code %, sha256 3f1b621c7e2af58a…

52: PHASE AU4HF % 2 4 1 !
53: CONST AU4HF : AU : HF : !

Example references (2 of 2; assessments first):

AU5HF_D1A (Au–Hf)

Names (3): corpus: corpus:phase:au-hf:au5hf-d1a
paper: paper:10.1016/s0925-8388(02)01293-8:Au5Hf
tdb: tdb:AuHf-03Du-LB.tdb:AU5HF_D1A

TDB models of AU5HF_D1A (1): PHASE and CONSTITUENT statements as written

AuHf-03Du-LB.tdb: AU5HF_D1A, type code %, sha256 3f1b621c7e2af58a…

47: PHASE AU5HF_D1A % 2 5 1 !
48: CONST AU5HF_D1A : AU : AU HF% : !

Example references (2 of 2; assessments first):

AUHF_B11 (Au–Hf)

Names (3): corpus: corpus:phase:au-hf:auhf-b11
paper: paper:10.1016/s0925-8388(02)01293-8:αAuHf
tdb: tdb:AuHf-03Du-LB.tdb:AUHF_B11

TDB models of AUHF_B11 (1): PHASE and CONSTITUENT statements as written

AuHf-03Du-LB.tdb: AUHF_B11, type code %, sha256 3f1b621c7e2af58a…

72: PHASE AUHF_B11 % 2 1 1 !
73: CONST AUHF_B11 : AU : AU HF% : !

Example references (2 of 2; assessments first):

AUHF_BETA (Au–Hf)

Names (3): corpus: corpus:phase:au-hf:auhf-beta
paper: paper:10.1016/s0925-8388(02)01293-8:βAuHf
tdb: tdb:AuHf-03Du-LB.tdb:AUHF_BETA

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

AuHf-03Du-LB.tdb: AUHF_BETA, type code %, sha256 3f1b621c7e2af58a…

77: PHASE AUHF_BETA % 2 1 1 !
78: CONST AUHF_BETA : AU : AU HF% : !

Example references (2 of 2; assessments first):

AUHF2 (Au–Hf)

Names (3): corpus: corpus:phase:au-hf:auhf2
paper: paper:10.1016/s0925-8388(02)01293-8:AuHf2
tdb: tdb:AuHf-03Du-LB.tdb:AUHF2

TDB models of AUHF2 (1): PHASE and CONSTITUENT statements as written

AuHf-03Du-LB.tdb: AUHF2, type code %, sha256 3f1b621c7e2af58a…

82: PHASE AUHF2 % 2 1 2 !
83: CONST AUHF2 : AU : HF : !

Example references (2 of 2; assessments first):

BCC_A2 (Au–Hf)

Names (3): corpus: corpus:phase:au-hf:bcc-a2
paper: paper:10.1016/s0925-8388(02)01293-8:bcc(Hf)
tdb: tdb:AuHf-03Du-LB.tdb:BCC_A2

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

AuHf-03Du-LB.tdb: BCC_A2, type code %B, sha256 3f1b621c7e2af58a…

37: PHASE BCC_A2 %B 2 1 3 !
38: CONST BCC_A2 : AU HF% : VA : !

Example references (2 of 2; assessments first):

FCC_A1 (Au–Hf)

Names (3): corpus: corpus:phase:au-hf:fcc-a1
paper: paper:10.1016/s0925-8388(02)01293-8:fcc(Au)
tdb: tdb:AuHf-03Du-LB.tdb:FCC_A1

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

AuHf-03Du-LB.tdb: FCC_A1, type code %A, sha256 3f1b621c7e2af58a…

32: PHASE FCC_A1 %A 2 1 1 !
33: CONST FCC_A1 : AU% HF : VA : !

Example references (2 of 2; assessments first):

HCP_A3 (Au–Hf)

Names (3): corpus: corpus:phase:au-hf:hcp-a3
paper: paper:10.1016/s0925-8388(02)01293-8:hcp(Hf)
tdb: tdb:AuHf-03Du-LB.tdb:HCP_A3

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

AuHf-03Du-LB.tdb: HCP_A3, type code %A, sha256 3f1b621c7e2af58a…

42: PHASE HCP_A3 %A 2 1 0.5 !
43: CONST HCP_A3 : AU HF% : VA : !

Example references (2 of 2; assessments first):

LIQUID (Au–Hf)

Names (3): corpus: corpus:phase:au-hf:liquid
paper: paper:10.1016/s0925-8388(02)01293-8:liq.
tdb: tdb:AuHf-03Du-LB.tdb:LIQUID

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

AuHf-03Du-LB.tdb: LIQUID, type code %, sha256 3f1b621c7e2af58a…

27: PHASE LIQUID:L % 1 1 !
28: CONST LIQUID:L : AU HF : !

Example references (2 of 2; assessments first):