Bi–Rb phases

11 phases (tier A 7, tier C 2, 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 · Bi–Rb system page · Markdown · field reference

Phases of the Bi–Rb system (11)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
RHOMBOHEDRAL_A7 phase:bi-rb:a7-rhombohedral	alpha-As · A7 · hR2 · R-3m (166)	tier A: standard phase name	stable in 2 of 2 calculated diagram(s): 300–544.55 K, x(Rb) 0–0	10	2
BCC_A2 phase:bi-rb:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 2 of 2 calculated diagram(s): 300–312.46 K, x(Rb) 1–1	4	2
BI2RB_C15 phase:bi-rb:bi2rb-c15	Cu2Mg · C15 · cF24 · Fd-3m (227)	tier A: standard phase name	stable in 2 of 2 calculated diagram(s): 300–886.97 K, x(Rb) 0.33333–0.33333	35	2
BI2RB3 phase:bi-rb:bi2rb3	Eu3Ga2 · mC20 · C2/c (15)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 2 of 2 calculated diagram(s): 300–750 K, x(Rb) 0.6–0.6	58	2
BI4RB5 phase:bi-rb:bi4rb5		needs_review	stable in 2 of 2 calculated diagram(s): 300–677.95 K, x(Rb) 0.55556–0.55556	52	2
BIRB phase:bi-rb:birb	CsSb · mP32 · P2_1/c (14)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 300–650 K, x(Rb) 0.5–0.5	29	1
BIRB3_D018 phase:bi-rb:birb3-d018	Na3As · D0_18 · hP8 · P6_3/mmc (194)	tier A: standard phase name	stable in 2 of 2 calculated diagram(s): 300–505.05 K, x(Rb) 0.75–0.75	16	2
BIRB3_D03 phase:bi-rb:birb3-d03	BiF3 · D0_3 · cF16 · Fm-3m (225)	tier A: standard phase name	stable in 2 of 2 calculated diagram(s): 503–940 K, x(Rb) 0.75–0.75	27	2
FCC_A1 phase:bi-rb:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	not stable in 2 calculated diagram(s)	0	2
HCP_A3 phase:bi-rb:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	not stable in 2 calculated diagram(s)	0	2
LIQUID phase:bi-rb:liquid	liquid	liquid	stable in 2 of 2 calculated diagram(s): 312.46–2500 K, x(Rb) 0–1	77	2

RHOMBOHEDRAL_A7 (Bi–Rb)

Id: phase:bi-rb:a7-rhombohedral; status assigned
Structure: alpha-As · A7 · hR2 · R-3m (166); type st:a7-alpha-as-hr2; tier A: standard phase name; confidence high
Stoichiometry: Bi 1.0000
Stability: stable in 2 of 2 calculated diagram(s): 300–544.55 K, x(Rb) 0–0
Literature: 10 values (10 accepted) from 2 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:bi-rb:a7-rhombohedral, corpus:phase:bi-rb:rhombohedral-a7
paper: paper:10.1007/s11669-022-00968-3:Bi, paper:10.1016/j.tca.2012.10.012:Rhomb_A7
tdb: tdb:BiRb-13Liu.tdb:RHOMBOHEDRAL_A7, tdb:BiRb-22Dzi.tdb:RHOMBOHEDRAL_A7

TDB models of RHOMBOHEDRAL_A7 (2): PHASE and CONSTITUENT statements as written

BiRb-13Liu.tdb: RHOMBOHEDRAL_A7, type code %, sha256 54503178dabfd72f…

46: PHASE RHOMBOHEDRAL_A7 % 1 1 !
47: CONST RHOMBOHEDRAL_A7 : BI : !

BiRb-22Dzi.tdb: RHOMBOHEDRAL_A7, type code %, sha256 01fb3aa5b0cccfc6…

54: PHASE RHOMBOHEDRAL_A7 % 1 1 !
55: CONST RHOMBOHEDRAL_A7 : BI : !

Example references (7 of 7; assessments first):

doi:10.1007/s11669-022-00968-3 F. Dziri, Y. Djaballah, E. Belbacha, A. Belgacem Bouzida, Thermodynamic Reassessment of the Bi-Rb System Supported by Ab-Initio Calculations, J. Phase Equilib. Diffus. 43, 382-392 (2022).
assessment that models this phase; reports values for this phase
doi:10.1016/j.tca.2012.10.012 Miao Liu, Changrong Li, Zhenmin Du, Cuiping Guo, Chunju Niu, Thermodynamic assessment of the Bi–Rb binary system, Thermochimica Acta 551, 27-32 (2013).
assessment that models this phase; reports values for this phase
doi:10.1002/zaac.19613090305 Geert Gnutzmann, Wilhelm Klemm, Das Verhalten der Alkalimetalle zu Halbmetallen. IV. Die Systeme des Kaliums, Rubidiums und Caesiums mit Wismut, Zeitschrift anorg allge chemie 309, 181-188 (1961).
cited as the source of values for this phase
doi:10.1007/bf02668237 A. Pelton and A. Petric, The Bi-Rb (Bismuth-Rubidium) System, JPE, 1993, 14(3), p 368–372.
cited as the source of values for this phase
doi:10.1149/1.2095424 Anthony Petric, Arthur D. Pelton, Marie‐Louise Saboungi, Electromotive Force Measurements in Molten Rb‐Bi Alloys with a Rubidium β″‐Alumina Electrolyte, J. Electrochem. Soc. 135, 2754-2760 (1988).
cited as the source of values for this phase
doi:10.1016/j.calphad.2014.04.001 Z. Cao, W. Xie, P. Chartrand, S. Wei, G. Du, and Z. Qiao, Thermodynamic Assessment of the Bi-Alkali Metal (Li, Na, K, Rb) Systems Using the Modified Quasichemical Model for the Liquid Phase, Calphad, 2014, 46, p 159–167.
cited as the source of values for this phase
doi:10.1016/j.tca.2013.01.029 Yajun Liu, Zhitao Kang, Jiang Wang, Thermodynamic basis and related phase equilibria for Bi–Li and Bi–Na binary systems, Thermochimica Acta 558, 53-60 (2013).
cited as the source of values for this phase

BCC_A2 (Bi–Rb)

Id: phase:bi-rb: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): 300–312.46 K, x(Rb) 1–1
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:bi-rb:bcc-a2
paper: paper:10.1016/j.tca.2012.10.012:BCC_A2
tdb: tdb:BiRb-13Liu.tdb:BCC_A2, tdb:BiRb-22Dzi.tdb:BCC_A2

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

BiRb-13Liu.tdb: BCC_A2, type code %B, sha256 54503178dabfd72f…

36: PHASE BCC_A2 %B 2 1 3 !
37: CONST BCC_A2 : BI RB% : VA : !

BiRb-22Dzi.tdb: BCC_A2, type code %B, sha256 01fb3aa5b0cccfc6…

44: PHASE BCC_A2 %B 2 1 3 !
45: CONST BCC_A2 : BI RB% : VA : !

Example references (5 of 5; assessments first):

doi:10.1016/j.tca.2012.10.012 Miao Liu, Changrong Li, Zhenmin Du, Cuiping Guo, Chunju Niu, Thermodynamic assessment of the Bi–Rb binary system, Thermochimica Acta 551, 27-32 (2013).
assessment that models this phase; reports values for this phase
doi:10.1007/s11669-022-00968-3 F. Dziri, Y. Djaballah, E. Belbacha, A. Belgacem Bouzida, Thermodynamic Reassessment of the Bi-Rb System Supported by Ab-Initio Calculations, J. Phase Equilib. Diffus. 43, 382-392 (2022).
assessment that models this phase
doi:10.1002/zaac.19613090305 Geert Gnutzmann, Wilhelm Klemm, Das Verhalten der Alkalimetalle zu Halbmetallen. IV. Die Systeme des Kaliums, Rubidiums und Caesiums mit Wismut, Zeitschrift anorg allge chemie 309, 181-188 (1961).
cited as the source of values for this phase
doi:10.1007/bf02668237 A. Pelton and A. Petric, The Bi-Rb (Bismuth-Rubidium) System, JPE, 1993, 14(3), p 368–372.
cited as the source of values for this phase
doi:10.1149/1.2095424 Anthony Petric, Arthur D. Pelton, Marie‐Louise Saboungi, Electromotive Force Measurements in Molten Rb‐Bi Alloys with a Rubidium β″‐Alumina Electrolyte, J. Electrochem. Soc. 135, 2754-2760 (1988).
cited as the source of values for this phase

BI2RB_C15 (Bi–Rb)

Id: phase:bi-rb:bi2rb-c15; status assigned
Structure: Cu2Mg · C15 · cF24 · Fd-3m (227); type st:c15-cu2mg-cf24; tier A: standard phase name; confidence high
Caveat: DFT agrees: on-hull mp-aaaabikj and oqmd-647552, space group 227
Stoichiometry: Bi 0.6667, Rb 0.3333
Stability: stable in 2 of 2 calculated diagram(s): 300–886.97 K, x(Rb) 0.33333–0.33333
Literature: 35 values (35 accepted) from 2 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:bi-rb:bi2rb-c15
mp: mp:mp-aaaabikj
oqmd: oqmd:oqmd-647552
paper: paper:10.1007/s11669-022-00968-3:Bi2Rb, paper:10.1016/j.tca.2012.10.012:Bi2Rb
tdb: tdb:BiRb-13Liu.tdb:BI2RB_C15, tdb:BiRb-22Dzi.tdb:BI2RB_C15

TDB models of BI2RB_C15 (2): PHASE and CONSTITUENT statements as written

BiRb-13Liu.tdb: BI2RB_C15, type code %, sha256 54503178dabfd72f…

51: PHASE BI2RB_C15 % 2 2 1 !
52: CONST BI2RB_C15 : BI : RB : !

BiRb-22Dzi.tdb: BI2RB_C15, type code %, sha256 01fb3aa5b0cccfc6…

59: PHASE BI2RB_C15 % 2 2 1 !
60: CONST BI2RB_C15 : BI : RB : !

Example references (8 of 8; assessments first):

doi:10.1007/s11669-022-00968-3 F. Dziri, Y. Djaballah, E. Belbacha, A. Belgacem Bouzida, Thermodynamic Reassessment of the Bi-Rb System Supported by Ab-Initio Calculations, J. Phase Equilib. Diffus. 43, 382-392 (2022).
assessment that models this phase; reports values for this phase
doi:10.1016/j.tca.2012.10.012 Miao Liu, Changrong Li, Zhenmin Du, Cuiping Guo, Chunju Niu, Thermodynamic assessment of the Bi–Rb binary system, Thermochimica Acta 551, 27-32 (2013).
assessment that models this phase; reports values for this phase
doi:10.1002/zaac.19613090305 Geert Gnutzmann, Wilhelm Klemm, Das Verhalten der Alkalimetalle zu Halbmetallen. IV. Die Systeme des Kaliums, Rubidiums und Caesiums mit Wismut, Zeitschrift anorg allge chemie 309, 181-188 (1961).
cited as the source of values for this phase
doi:10.1007/bf02668237 A. Pelton and A. Petric, The Bi-Rb (Bismuth-Rubidium) System, JPE, 1993, 14(3), p 368–372.
cited as the source of values for this phase
doi:10.1149/1.2095424 Anthony Petric, Arthur D. Pelton, Marie‐Louise Saboungi, Electromotive Force Measurements in Molten Rb‐Bi Alloys with a Rubidium β″‐Alumina Electrolyte, J. Electrochem. Soc. 135, 2754-2760 (1988).
cited as the source of values for this phase
doi:10.1016/j.calphad.2014.04.001 Z. Cao, W. Xie, P. Chartrand, S. Wei, G. Du, and Z. Qiao, Thermodynamic Assessment of the Bi-Alkali Metal (Li, Na, K, Rb) Systems Using the Modified Quasichemical Model for the Liquid Phase, Calphad, 2014, 46, p 159–167.
cited as the source of values for this phase
doi:10.1016/j.tca.2013.01.029 Yajun Liu, Zhitao Kang, Jiang Wang, Thermodynamic basis and related phase equilibria for Bi–Li and Bi–Na binary systems, Thermochimica Acta 558, 53-60 (2013).
cited as the source of values for this phase
doi:10.1002/zaac.200300312 Franziska Emmerling, Nina Längin, Denis Petri, Martin Kroeker, Caroline Röhr, Alkalimetallbismutide ABi und ABi2 (A = K, Rb, Cs) — Synthesen, Kristallstrukturen, Eigenschaften, Zeitschrift anorg allge chemie 630, 171-178 (2004).
cited as the source of values for this phase

BI2RB3 (Bi–Rb)

Id: phase:bi-rb:bi2rb3; status assigned
Structure: Eu3Ga2 · mC20 · C2/c (15); type st:eu3ga2-mc20; 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_on_hull_entry_in_both, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Bi 0.4000, Rb 0.6000
Stability: stable in 2 of 2 calculated diagram(s): 300–750 K, x(Rb) 0.6–0.6
Literature: 58 values (58 accepted) from 2 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:bi-rb:bi2rb3
paper: paper:10.1007/s11669-022-00968-3:Bi2Rb3, paper:10.1016/j.tca.2012.10.012:Bi2Rb3
tdb: tdb:BiRb-13Liu.tdb:BI2RB3, tdb:BiRb-22Dzi.tdb:BI2RB3

TDB models of BI2RB3 (2): PHASE and CONSTITUENT statements as written

BiRb-13Liu.tdb: BI2RB3, type code %, sha256 54503178dabfd72f…

61: PHASE BI2RB3 % 2 2 3 !
62: CONST BI2RB3 : BI : RB : !

BiRb-22Dzi.tdb: BI2RB3, type code %, sha256 01fb3aa5b0cccfc6…

74: PHASE BI2RB3 % 2 2 3 !
75: CONST BI2RB3 : BI : RB : !

Example references (8 of 8; assessments first):

doi:10.1007/s11669-022-00968-3 F. Dziri, Y. Djaballah, E. Belbacha, A. Belgacem Bouzida, Thermodynamic Reassessment of the Bi-Rb System Supported by Ab-Initio Calculations, J. Phase Equilib. Diffus. 43, 382-392 (2022).
assessment that models this phase; reports values for this phase
doi:10.1016/j.tca.2012.10.012 Miao Liu, Changrong Li, Zhenmin Du, Cuiping Guo, Chunju Niu, Thermodynamic assessment of the Bi–Rb binary system, Thermochimica Acta 551, 27-32 (2013).
assessment that models this phase; reports values for this phase
doi:10.1021/ja002606t Franck Gascoin, Slavi C. Sevov, Synthesis and Characterization of A3Bi2 (A = K, Rb, Cs) with Isolated Diatomic Dianion of Bismuth, [Bi2]2-, and an Extra Delocalized Electron, J. Am. Chem. Soc. 122, 10251-10252 (2000).
cited as the source of values for this phase
doi:10.1149/1.2095424 Anthony Petric, Arthur D. Pelton, Marie‐Louise Saboungi, Electromotive Force Measurements in Molten Rb‐Bi Alloys with a Rubidium β″‐Alumina Electrolyte, J. Electrochem. Soc. 135, 2754-2760 (1988).
cited as the source of values for this phase
doi:10.1007/bf02668237 A. Pelton and A. Petric, The Bi-Rb (Bismuth-Rubidium) System, JPE, 1993, 14(3), p 368–372.
cited as the source of values for this phase
doi:10.1016/j.calphad.2014.04.001 Z. Cao, W. Xie, P. Chartrand, S. Wei, G. Du, and Z. Qiao, Thermodynamic Assessment of the Bi-Alkali Metal (Li, Na, K, Rb) Systems Using the Modified Quasichemical Model for the Liquid Phase, Calphad, 2014, 46, p 159–167.
cited as the source of values for this phase
doi:10.1016/j.tca.2013.01.029 Yajun Liu, Zhitao Kang, Jiang Wang, Thermodynamic basis and related phase equilibria for Bi–Li and Bi–Na binary systems, Thermochimica Acta 558, 53-60 (2013).
cited as the source of values for this phase
doi:10.1002/zaac.19613090305 Geert Gnutzmann, Wilhelm Klemm, Das Verhalten der Alkalimetalle zu Halbmetallen. IV. Die Systeme des Kaliums, Rubidiums und Caesiums mit Wismut, Zeitschrift anorg allge chemie 309, 181-188 (1961).
cited as the source of values for this phase

BI4RB5 (Bi–Rb)

Id: phase:bi-rb:bi4rb5; status needs_review
No structure assigned. Why: assessment_declared_compound_differs_from_model_composition; no_on_hull_entry_in_mp; no_structure_token
Candidate (dft_oqmd): C2/m (12) — on-hull OQMD Bi4 Rb5 at x(RB)=0.5556
Candidate (literature_printed): Rb5As4 · mC20 — printed with a label mapped to this phase
Candidate (sgte_mmc2): Rb5As4 · mC20 · C2/m (12) — Hallstedt 2025 mmc2 row for BI4RB5: Bi24Rb5
Candidate (tdb_comment): Rb5As4 · mC20 · C2/m — BiRb-13Liu.tdb: 'Prototype Rb5As4 (mC20, C2/m)'
Candidate (tdb_comment): Rb5As4 · mC20 · C2/m — BiRb-22Dzi.tdb: 'Prototype Rb5As4 (mC20, C2/m)'
Stoichiometry: Bi 0.4444, Rb 0.5556
Stability: stable in 2 of 2 calculated diagram(s): 300–677.95 K, x(Rb) 0.55556–0.55556
Literature: 52 values (52 accepted) from 2 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:bi-rb:bi4rb5
paper: paper:10.1007/s11669-022-00968-3:Bi4Rb5, paper:10.1016/j.tca.2012.10.012:Bi4Rb5
tdb: tdb:BiRb-13Liu.tdb:BI4RB5, tdb:BiRb-22Dzi.tdb:BI4RB5

TDB models of BI4RB5 (2): PHASE and CONSTITUENT statements as written

BiRb-13Liu.tdb: BI4RB5, type code %, sha256 54503178dabfd72f…

56: PHASE BI4RB5 % 2 4 5 !
57: CONST BI4RB5 : BI : RB : !

BiRb-22Dzi.tdb: BI4RB5, type code %, sha256 01fb3aa5b0cccfc6…

69: PHASE BI4RB5 % 2 4 5 !
70: CONST BI4RB5 : BI : RB : !

Example references (8 of 8; assessments first):

doi:10.1007/s11669-022-00968-3 F. Dziri, Y. Djaballah, E. Belbacha, A. Belgacem Bouzida, Thermodynamic Reassessment of the Bi-Rb System Supported by Ab-Initio Calculations, J. Phase Equilib. Diffus. 43, 382-392 (2022).
assessment that models this phase; reports values for this phase
doi:10.1016/j.tca.2012.10.012 Miao Liu, Changrong Li, Zhenmin Du, Cuiping Guo, Chunju Niu, Thermodynamic assessment of the Bi–Rb binary system, Thermochimica Acta 551, 27-32 (2013).
assessment that models this phase; reports values for this phase
doi:10.1021/ic0104499 Franck Gascoin, Slavi C. Sevov, Synthesis and Characterization of the “Metallic Salts” A5Pn4 (A = K, Rb, Cs and Pn = As, Sb, Bi) with Isolated Zigzag Tetramers of Pn44- and an Extra Delocalized Electron, Inorg. Chem. 40, 5177-5181 (2001).
cited as the source of values for this phase
doi:10.1149/1.2095424 Anthony Petric, Arthur D. Pelton, Marie‐Louise Saboungi, Electromotive Force Measurements in Molten Rb‐Bi Alloys with a Rubidium β″‐Alumina Electrolyte, J. Electrochem. Soc. 135, 2754-2760 (1988).
cited as the source of values for this phase
doi:10.1002/zaac.19613090305 Geert Gnutzmann, Wilhelm Klemm, Das Verhalten der Alkalimetalle zu Halbmetallen. IV. Die Systeme des Kaliums, Rubidiums und Caesiums mit Wismut, Zeitschrift anorg allge chemie 309, 181-188 (1961).
cited as the source of values for this phase
doi:10.1007/bf02668237 A. Pelton and A. Petric, The Bi-Rb (Bismuth-Rubidium) System, JPE, 1993, 14(3), p 368–372.
cited as the source of values for this phase
doi:10.1016/j.calphad.2014.04.001 Z. Cao, W. Xie, P. Chartrand, S. Wei, G. Du, and Z. Qiao, Thermodynamic Assessment of the Bi-Alkali Metal (Li, Na, K, Rb) Systems Using the Modified Quasichemical Model for the Liquid Phase, Calphad, 2014, 46, p 159–167.
cited as the source of values for this phase
doi:10.1016/j.tca.2013.01.029 Yajun Liu, Zhitao Kang, Jiang Wang, Thermodynamic basis and related phase equilibria for Bi–Li and Bi–Na binary systems, Thermochimica Acta 558, 53-60 (2013).
cited as the source of values for this phase

BIRB (Bi–Rb)

Id: phase:bi-rb:birb; status assigned
Structure: CsSb · mP32 · P2_1/c (14); type st:cssb-mp32; 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 (mp_oqmd_space_groups_differ, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Bi 0.5000, Rb 0.5000
Stability: stable in 1 of 1 calculated diagram(s): 300–650 K, x(Rb) 0.5–0.5
Literature: 29 values (29 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:bi-rb:birb
paper: paper:10.1007/s11669-022-00968-3:BiRb
tdb: tdb:BiRb-22Dzi.tdb:BIRB

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

BiRb-22Dzi.tdb: BIRB, type code %, sha256 01fb3aa5b0cccfc6…

64: PHASE BIRB % 2 1 1 !
65: CONST BIRB : BI : RB : !

Example references (5 of 5; assessments first):

doi:10.1007/s11669-022-00968-3 F. Dziri, Y. Djaballah, E. Belbacha, A. Belgacem Bouzida, Thermodynamic Reassessment of the Bi-Rb System Supported by Ab-Initio Calculations, J. Phase Equilib. Diffus. 43, 382-392 (2022).
assessment that models this phase; reports values for this phase
doi:10.1002/zaac.200300312 Franziska Emmerling, Nina Längin, Denis Petri, Martin Kroeker, Caroline Röhr, Alkalimetallbismutide ABi und ABi2 (A = K, Rb, Cs) — Synthesen, Kristallstrukturen, Eigenschaften, Zeitschrift anorg allge chemie 630, 171-178 (2004).
cited as the source of values for this phase
doi:10.1007/bf02668237 A. Pelton and A. Petric, The Bi-Rb (Bismuth-Rubidium) System, JPE, 1993, 14(3), p 368–372.
cited as the source of values for this phase
doi:10.1088/1742-6596/1359/1/012104 S V Stankus, I V Savchenko, O S Yatsuk, Calorical properties of equiatomic alloy of rubidium-bismuth system in the temperature range 293–1175 K, J. Phys.: Conf. Ser. 1359, 012104 (2019).
cited as the source of values for this phase
doi:10.1149/1.2095424 Anthony Petric, Arthur D. Pelton, Marie‐Louise Saboungi, Electromotive Force Measurements in Molten Rb‐Bi Alloys with a Rubidium β″‐Alumina Electrolyte, J. Electrochem. Soc. 135, 2754-2760 (1988).
cited as the source of values for this phase

BIRB3_D018 (Bi–Rb)

Id: phase:bi-rb:birb3-d018; status assigned
Structure: Na3As · D0_18 · hP8 · P6_3/mmc (194); type st:d0-18-na3as-hp8; tier A: standard phase name; confidence high
Stoichiometry: Bi 0.2500, Rb 0.7500
Stability: stable in 2 of 2 calculated diagram(s): 300–505.05 K, x(Rb) 0.75–0.75
Literature: 16 values (16 accepted) from 2 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:bi-rb:birb3-d018
paper: paper:10.1007/s11669-022-00968-3:α BiRb3, paper:10.1016/j.tca.2012.10.012:α-BiRb3
tdb: tdb:BiRb-13Liu.tdb:BIRB3_D018, tdb:BiRb-22Dzi.tdb:BIRB3_D018

TDB models of BIRB3_D018 (2): PHASE and CONSTITUENT statements as written

BiRb-13Liu.tdb: BIRB3_D018, type code %, sha256 54503178dabfd72f…

66: PHASE BIRB3_D018 % 2 1 3 !
67: CONST BIRB3_D018 : BI : RB : !

BiRb-22Dzi.tdb: BIRB3_D018, type code %, sha256 01fb3aa5b0cccfc6…

79: PHASE BIRB3_D018 % 2 1 3 !
80: CONST BIRB3_D018 : BI : RB : !

Example references (7 of 7; assessments first):

doi:10.1007/s11669-022-00968-3 F. Dziri, Y. Djaballah, E. Belbacha, A. Belgacem Bouzida, Thermodynamic Reassessment of the Bi-Rb System Supported by Ab-Initio Calculations, J. Phase Equilib. Diffus. 43, 382-392 (2022).
assessment that models this phase; reports values for this phase
doi:10.1016/j.tca.2012.10.012 Miao Liu, Changrong Li, Zhenmin Du, Cuiping Guo, Chunju Niu, Thermodynamic assessment of the Bi–Rb binary system, Thermochimica Acta 551, 27-32 (2013).
assessment that models this phase; reports values for this phase
doi:10.1002/zaac.19613090305 Geert Gnutzmann, Wilhelm Klemm, Das Verhalten der Alkalimetalle zu Halbmetallen. IV. Die Systeme des Kaliums, Rubidiums und Caesiums mit Wismut, Zeitschrift anorg allge chemie 309, 181-188 (1961).
cited as the source of values for this phase
doi:10.1007/bf02668237 A. Pelton and A. Petric, The Bi-Rb (Bismuth-Rubidium) System, JPE, 1993, 14(3), p 368–372.
cited as the source of values for this phase
doi:10.1016/j.calphad.2014.04.001 Z. Cao, W. Xie, P. Chartrand, S. Wei, G. Du, and Z. Qiao, Thermodynamic Assessment of the Bi-Alkali Metal (Li, Na, K, Rb) Systems Using the Modified Quasichemical Model for the Liquid Phase, Calphad, 2014, 46, p 159–167.
cited as the source of values for this phase
doi:10.1016/j.tca.2013.01.029 Yajun Liu, Zhitao Kang, Jiang Wang, Thermodynamic basis and related phase equilibria for Bi–Li and Bi–Na binary systems, Thermochimica Acta 558, 53-60 (2013).
cited as the source of values for this phase
doi:10.1149/1.2095424 Anthony Petric, Arthur D. Pelton, Marie‐Louise Saboungi, Electromotive Force Measurements in Molten Rb‐Bi Alloys with a Rubidium β″‐Alumina Electrolyte, J. Electrochem. Soc. 135, 2754-2760 (1988).
cited as the source of values for this phase

BIRB3_D03 (Bi–Rb)

Id: phase:bi-rb:birb3-d03; status assigned
Structure: BiF3 · D0_3 · cF16 · Fm-3m (225); type st:d0-3-bif3-cf16; tier A: standard phase name; confidence high
Stoichiometry: Bi 0.2500, Rb 0.7500
Stability: stable in 2 of 2 calculated diagram(s): 503–940 K, x(Rb) 0.75–0.75
Literature: 27 values (27 accepted) from 2 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:bi-rb:birb3-d03
paper: paper:10.1007/s11669-022-00968-3:β BiRb3, paper:10.1007/s11669-022-00968-3:βBiRb3, paper:10.1016/j.tca.2012.10.012:β-BiRb3
tdb: tdb:BiRb-13Liu.tdb:BIRB3_D03, tdb:BiRb-22Dzi.tdb:BIRB3_D03

TDB models of BIRB3_D03 (2): PHASE and CONSTITUENT statements as written

BiRb-13Liu.tdb: BIRB3_D03, type code %, sha256 54503178dabfd72f…

71: PHASE BIRB3_D03 % 2 1 3 !
72: CONST BIRB3_D03 : BI : RB : !

BiRb-22Dzi.tdb: BIRB3_D03, type code %, sha256 01fb3aa5b0cccfc6…

84: PHASE BIRB3_D03 % 2 1 3 !
85: CONST BIRB3_D03 : BI : RB : !

Example references (7 of 7; assessments first):

doi:10.1007/s11669-022-00968-3 F. Dziri, Y. Djaballah, E. Belbacha, A. Belgacem Bouzida, Thermodynamic Reassessment of the Bi-Rb System Supported by Ab-Initio Calculations, J. Phase Equilib. Diffus. 43, 382-392 (2022).
assessment that models this phase; reports values for this phase
doi:10.1016/j.tca.2012.10.012 Miao Liu, Changrong Li, Zhenmin Du, Cuiping Guo, Chunju Niu, Thermodynamic assessment of the Bi–Rb binary system, Thermochimica Acta 551, 27-32 (2013).
assessment that models this phase; reports values for this phase
doi:10.1002/zaac.19613090305 Geert Gnutzmann, Wilhelm Klemm, Das Verhalten der Alkalimetalle zu Halbmetallen. IV. Die Systeme des Kaliums, Rubidiums und Caesiums mit Wismut, Zeitschrift anorg allge chemie 309, 181-188 (1961).
cited as the source of values for this phase
doi:10.1007/bf02668237 A. Pelton and A. Petric, The Bi-Rb (Bismuth-Rubidium) System, JPE, 1993, 14(3), p 368–372.
cited as the source of values for this phase
doi:10.1016/j.calphad.2014.04.001 Z. Cao, W. Xie, P. Chartrand, S. Wei, G. Du, and Z. Qiao, Thermodynamic Assessment of the Bi-Alkali Metal (Li, Na, K, Rb) Systems Using the Modified Quasichemical Model for the Liquid Phase, Calphad, 2014, 46, p 159–167.
cited as the source of values for this phase
doi:10.1016/j.tca.2013.01.029 Yajun Liu, Zhitao Kang, Jiang Wang, Thermodynamic basis and related phase equilibria for Bi–Li and Bi–Na binary systems, Thermochimica Acta 558, 53-60 (2013).
cited as the source of values for this phase
doi:10.1149/1.2095424 Anthony Petric, Arthur D. Pelton, Marie‐Louise Saboungi, Electromotive Force Measurements in Molten Rb‐Bi Alloys with a Rubidium β″‐Alumina Electrolyte, J. Electrochem. Soc. 135, 2754-2760 (1988).
cited as the source of values for this phase

FCC_A1 (Bi–Rb)

Id: phase:bi-rb:fcc-a1; status assigned
Structure: Cu · A1 · cF4 · Fm-3m (225); type st:a1-cu-cf4; tier A: standard phase name; confidence high
Stability: not stable in 2 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:bi-rb:fcc-a1
tdb: tdb:BiRb-13Liu.tdb:FCC_A1, tdb:BiRb-22Dzi.tdb:FCC_A1

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

BiRb-13Liu.tdb: FCC_A1, type code %A, sha256 54503178dabfd72f…

31: PHASE FCC_A1 %A 2 1 1 !
32: CONST FCC_A1 : BI RB : VA : !

BiRb-22Dzi.tdb: FCC_A1, type code %A, sha256 01fb3aa5b0cccfc6…

39: PHASE FCC_A1 %A 2 1 1 !
40: CONST FCC_A1 : BI RB : VA : !

Example references (2 of 2; assessments first):

doi:10.1007/s11669-022-00968-3 F. Dziri, Y. Djaballah, E. Belbacha, A. Belgacem Bouzida, Thermodynamic Reassessment of the Bi-Rb System Supported by Ab-Initio Calculations, J. Phase Equilib. Diffus. 43, 382-392 (2022).
assessment that models this phase
doi:10.1016/j.tca.2012.10.012 Miao Liu, Changrong Li, Zhenmin Du, Cuiping Guo, Chunju Niu, Thermodynamic assessment of the Bi–Rb binary system, Thermochimica Acta 551, 27-32 (2013).
assessment that models this phase

HCP_A3 (Bi–Rb)

Id: phase:bi-rb: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 2 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:bi-rb:hcp-a3
tdb: tdb:BiRb-13Liu.tdb:HCP_A3, tdb:BiRb-22Dzi.tdb:HCP_A3

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

BiRb-13Liu.tdb: HCP_A3, type code %A, sha256 54503178dabfd72f…

41: PHASE HCP_A3 %A 2 1 0.5 !
42: CONST HCP_A3 : BI RB : VA: !

BiRb-22Dzi.tdb: HCP_A3, type code %A, sha256 01fb3aa5b0cccfc6…

49: PHASE HCP_A3 %A 2 1 0.5 !
50: CONST HCP_A3 : BI RB : VA: !

Example references (2 of 2; assessments first):

doi:10.1007/s11669-022-00968-3 F. Dziri, Y. Djaballah, E. Belbacha, A. Belgacem Bouzida, Thermodynamic Reassessment of the Bi-Rb System Supported by Ab-Initio Calculations, J. Phase Equilib. Diffus. 43, 382-392 (2022).
assessment that models this phase
doi:10.1016/j.tca.2012.10.012 Miao Liu, Changrong Li, Zhenmin Du, Cuiping Guo, Chunju Niu, Thermodynamic assessment of the Bi–Rb binary system, Thermochimica Acta 551, 27-32 (2013).
assessment that models this phase

LIQUID (Bi–Rb)

Id: phase:bi-rb:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 2 of 2 calculated diagram(s): 312.46–2500 K, x(Rb) 0–1
Literature: 77 values (77 accepted) from 2 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:bi-rb:liquid
paper: paper:10.1007/s11669-022-00968-3:Liq, paper:10.1016/j.tca.2012.10.012:L
tdb: tdb:BiRb-13Liu.tdb:LIQUID, tdb:BiRb-22Dzi.tdb:LIQUID

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

BiRb-13Liu.tdb: LIQUID, type code %, sha256 54503178dabfd72f…

26: PHASE LIQUID:L % 1 1 !
27: CONST LIQUID:L : BI BIRB BIRB3 RB : !

BiRb-22Dzi.tdb: LIQUID, type code %, sha256 01fb3aa5b0cccfc6…

34: PHASE LIQUID:L % 1 1 !
35: CONST LIQUID:L : BI BIRB BIRB3 RB : !

Example references (8 of 8; assessments first):

doi:10.1007/s11669-022-00968-3 F. Dziri, Y. Djaballah, E. Belbacha, A. Belgacem Bouzida, Thermodynamic Reassessment of the Bi-Rb System Supported by Ab-Initio Calculations, J. Phase Equilib. Diffus. 43, 382-392 (2022).
assessment that models this phase; reports values for this phase
doi:10.1016/j.tca.2012.10.012 Miao Liu, Changrong Li, Zhenmin Du, Cuiping Guo, Chunju Niu, Thermodynamic assessment of the Bi–Rb binary system, Thermochimica Acta 551, 27-32 (2013).
assessment that models this phase; reports values for this phase
doi:10.1007/bf02668237 A. Pelton and A. Petric, The Bi-Rb (Bismuth-Rubidium) System, JPE, 1993, 14(3), p 368–372.
cited as the source of values for this phase
doi:10.1002/zaac.19613090305 Geert Gnutzmann, Wilhelm Klemm, Das Verhalten der Alkalimetalle zu Halbmetallen. IV. Die Systeme des Kaliums, Rubidiums und Caesiums mit Wismut, Zeitschrift anorg allge chemie 309, 181-188 (1961).
cited as the source of values for this phase
doi:10.1149/1.2095424 Anthony Petric, Arthur D. Pelton, Marie‐Louise Saboungi, Electromotive Force Measurements in Molten Rb‐Bi Alloys with a Rubidium β″‐Alumina Electrolyte, J. Electrochem. Soc. 135, 2754-2760 (1988).
cited as the source of values for this phase
doi:10.1016/j.calphad.2014.04.001 Z. Cao, W. Xie, P. Chartrand, S. Wei, G. Du, and Z. Qiao, Thermodynamic Assessment of the Bi-Alkali Metal (Li, Na, K, Rb) Systems Using the Modified Quasichemical Model for the Liquid Phase, Calphad, 2014, 46, p 159–167.
cited as the source of values for this phase
doi:10.1016/j.tca.2013.01.029 Yajun Liu, Zhitao Kang, Jiang Wang, Thermodynamic basis and related phase equilibria for Bi–Li and Bi–Na binary systems, Thermochimica Acta 558, 53-60 (2013).
cited as the source of values for this phase
doi:10.1088/1742-6596/1359/1/012104 S V Stankus, I V Savchenko, O S Yatsuk, Calorical properties of equiatomic alloy of rubidium-bismuth system in the temperature range 293–1175 K, J. Phys.: Conf. Ser. 1359, 012104 (2019).
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}
}