Ce–O system

90 accepted literature values from 3 paper(s) (experimental 51, model 29, unspecified 10); 2 calculated phase diagram(s). 5 further extracted value(s) not accepted by the reader-agreement checks are only in the JSON/CSV.

Data: JSON · CSV · interactive explorer · interactive phase diagram · phases (19) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	51
model	29
unspecified	10

Accepted values by property group
Property group	Values
invariant reaction	48
phase transition	6
phase equilibrium	12
formation	1
heat capacity / entropy / enthalpy	1
crystal structure	22

Calculated phase diagrams

Binary phase diagrams calculated with pycalphad 0.11.2 from the SGTE binary collection (Hallstedt 2025, CC BY 4.0). Evidence class: model.

Assessments with a calculated phase diagram
TDB file	Assessment	SHA-256	Links
CeO-06Zin.tdb	M. Zinkevich, D. Djurovic, F. Aldinger, Solid State Ionics, 177, 989-1001(2006). doi:10.1016/j.ssi.2006.02.044	`3e9afdf3d632ed92a545cdbb44b9053159e64a22da8fab0f8874e7119e0742f4`	viewer · TDB · JSON
CeO-08Dju.tdb	D. Djurovic, M. Zinkevich, F. Aldinger, Solid State Ionics, 179, 1902-11(2008). doi:10.1016/j.ssi.2008.06.011	`f4f16a6dae7120a8e76e4d1338142a8b5828227ff3a7a7f06df9f0cdd3997600`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
CeO-06Zin.tdb	2471.49	LIQUID (x(O) 0.63936) + CE62O112 (x(O) 0.64368) + GAS (x(O) 1)
CeO-06Zin.tdb	2469.6	LIQUID (x(O) 0.63912) + CE40O72 (x(O) 0.64286) + CE62O112 (x(O) 0.64368)
CeO-06Zin.tdb	2416.78	LIQUID (x(O) 0.51016) + ION (x(O) 0.52277) + X_R2O3 (x(O) 0.57274)
CeO-06Zin.tdb	2416.14	CE62O112 (x(O) 0.64368) + CE11O20 (x(O) 0.64516) + GAS (x(O) 1)
CeO-06Zin.tdb	2413	LIQUID (x(O) 0.50656) + X_R2O3 (x(O) 0.57255) + H_R2O3 (x(O) 0.57255)
CeO-06Zin.tdb	2413	H_R2O3 (x(O) 0.59253) + X_R2O3 (x(O) 0.59253) + ION (x(O) 0.60059)
CeO-06Zin.tdb	2361.24	LIQUID (x(O) 0.63143) + CE19O34 (x(O) 0.64151) + CE40O72 (x(O) 0.64286)
CeO-06Zin.tdb	2293.5	LIQUID (x(O) 0.62835) + CE9O16 (x(O) 0.64) + CE19O34 (x(O) 0.64151)
CeO-06Zin.tdb	2027.12	LIQUID (x(O) 0.15131) + H_R2O3#2 (x(O) 0.54663) + H_R2O3 (x(O) 0.56414)
CeO-06Zin.tdb	1760.54	ION (x(O) 0.04374) + LIQUID (x(O) 0.06211) + H_R2O3 (x(O) 0.51823)
CeO-06Zin.tdb	1080.24	ION (x(O) 0.00117) + BCC_A2 (x(O) 0.00578) + H_R2O3 (x(O) 0.5016)
CeO-06Zin.tdb	1005	BCC_A2 (x(O) 0.00314) + FCC_A1 (x(O) 0.0049) + H_R2O3 (x(O) 0.50107)
CeO-06Zin.tdb	435.98	CE19O34 (x(O) 0.64151) + CE40O72 (x(O) 0.64286) + CE62O112 (x(O) 0.64368)
CeO-06Zin.tdb	431.2	CE19O34 (x(O) 0.64151) + CE62O112 (x(O) 0.64368) + CE11O20 (x(O) 0.64516)
CeO-06Zin.tdb	420.08	CE9O16 (x(O) 0.64) + CE19O34 (x(O) 0.64151) + CE11O20 (x(O) 0.64516)
CeO-06Zin.tdb	398.92	CE7O12 (x(O) 0.63158) + CE9O16 (x(O) 0.64) + CE11O20 (x(O) 0.64516)
CeO-08Dju.tdb	2471.49	LIQUID (x(O) 0.63936) + CE62O112 (x(O) 0.64368) + GAS (x(O) 1)
CeO-08Dju.tdb	2469.6	LIQUID (x(O) 0.63912) + CE40O72 (x(O) 0.64286) + CE62O112 (x(O) 0.64368)
CeO-08Dju.tdb	2440.09	LIQUID (x(O) 0.50447) + ION (x(O) 0.5185) + X_R2O3 (x(O) 0.57468)
CeO-08Dju.tdb	2416.14	CE62O112 (x(O) 0.64368) + CE11O20 (x(O) 0.64516) + GAS (x(O) 1)
CeO-08Dju.tdb	2412.9	LIQUID (x(O) 0.47388) + X_R2O3 (x(O) 0.57395) + H_R2O3 (x(O) 0.57419)
CeO-08Dju.tdb	2361.24	LIQUID (x(O) 0.63143) + CE19O34 (x(O) 0.64151) + CE40O72 (x(O) 0.64286)
CeO-08Dju.tdb	1692.18	ION (x(O) 0.0372) + LIQUID (x(O) 0.05324) + H_R2O3 (x(O) 0.57993)
CeO-08Dju.tdb	1684.13	ION (x(O) 0.03625) + X_R2O3 (x(O) 0.52354) + H_R2O3 (x(O) 0.58012)
CeO-08Dju.tdb	1081.23	ION (x(O) 0.00131) + BCC_A2 (x(O) 0.00647) + X_R2O3 (x(O) 0.50116)
CeO-08Dju.tdb	1005.61	BCC_A2 (x(O) 0.00352) + FCC_A1 (x(O) 0.0055) + X_R2O3 (x(O) 0.50069)
CeO-08Dju.tdb	435.98	CE19O34 (x(O) 0.64151) + CE40O72 (x(O) 0.64286) + CE62O112 (x(O) 0.64368)
CeO-08Dju.tdb	431.2	CE19O34 (x(O) 0.64151) + CE62O112 (x(O) 0.64368) + CE11O20 (x(O) 0.64516)
CeO-08Dju.tdb	420.08	CE9O16 (x(O) 0.64) + CE19O34 (x(O) 0.64151) + CE11O20 (x(O) 0.64516)
CeO-08Dju.tdb	398.92	CE7O12 (x(O) 0.63158) + CE9O16 (x(O) 0.64) + CE11O20 (x(O) 0.64516)

Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull CeO-06Zin

Invariant reactions (literature)

Invariant reactions reported in the literature for the Ce–O system (48)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
4110	congruent melting: L->gas (P=1 bar)	L: O 0.608; gas: O 0.608	unspecified	[1] DJUROVIC 2008	Table 4, p. 6, row 1 report
3299	congruent melting: L->gas (P=1 bar)	L: O 0.456; gas: O 0.456	unspecified	[1] DJUROVIC 2008	Table 4, p. 6, row 2 report
2566	peritectic: F=L+gas (P=1 bar)	F: O 0.649; L: O 0.637	model	[2] ZINKEVICH 2006	Table 5, p. 9, row 3 report
2557	peritectic: CeO2(F)->L+gas (P=1 bar)	L: O 0.637; F: O 0.649	unspecified	[1] DJUROVIC 2008	Table 4, p. 6, row 3 report
2532	congruent melting: L->Ce2O3(X)	L: O 0.582; X: O 0.582	unspecified	[1] DJUROVIC 2008	Table 4, p. 6, row 4 report
2413	metatectic/catatectic: L+Ce2O3(X)->Ce2O3(H)	L: O 0.601	unspecified	[1] DJUROVIC 2008	Table 4, p. 6, row 5 report
2413	metatectic/catatectic: L+Ce2O3(X)->Ce2O3(H)	L: O 0.474	unspecified	[1] DJUROVIC 2008	Table 4, p. 6, row 6 report
2413	metatectic/catatectic: L+X=H	L: O 0.601; X: O 0.593; H: O 0.593	model	[2] ZINKEVICH 2006	Table 5, p. 9, row 5 report
2413	metatectic/catatectic: L+X=H	L: O 0.52; X: O 0.572; H: O 0.572	model	[2] ZINKEVICH 2006	Table 5, p. 9, row 6 report
2338	metatectic/catatectic: L+Ce2O3(H)->Ce2O3(A)	L: O 0.603	unspecified	[1] DJUROVIC 2008	Table 4, p. 6, row 7 report
2338	metatectic/catatectic: L+Ce2O3(H)->Ce2O3(A)	L: O 0.359	unspecified	[1] DJUROVIC 2008	Table 4, p. 6, row 8 report
2338	metatectic/catatectic: L+H=A	L: O 0.603; H: O 0.596; A: O 0.596	model	[2] ZINKEVICH 2006	Table 5, p. 9, row 7 report
2338	metatectic/catatectic: L+H=A	L: O 0.337; H: O 0.569; A: O 0.569	model	[2] ZINKEVICH 2006	Table 5, p. 9, row 8 report
2079	eutectic: L->Ce2O3(A)+CeO2(F)	L: O 0.615; A: O 0.6; F: O 0.623	unspecified	[1] DJUROVIC 2008	Table 4, p. 6, row 9 report
2076	eutectic: L=A+F	L: O 0.614; A: O 0.6; F: O 0.623	model	[2] ZINKEVICH 2006	Table 5, p. 9, row 9 report
1676	peritectoid: A+F=C	A: O 0.6; F: O 0.629; C: O 0.622	model	[2] ZINKEVICH 2006	Table 5, p. 9, row 10 report
1321	peritectoid: C+F=Ce7O12	C: O 0.628; F: O 0.635	model	[2] ZINKEVICH 2006	Table 5, p. 9, row 11 report
1296	peritectoid: C+F=Ce7O12		experimental	[2] ZINKEVICH 2006 cites Bevan 1964 doi	Table 5, p. 9, row 12 report
1084	peritectoid: C+F=Ce7O12		experimental	[2] ZINKEVICH 2006 cites Ricken 1984 doi	Table 5, p. 9, row 13 report
1080	peritectic: L+A=bcc-Ce	L: O 0.0011; A: O 0.598; bcc-Ce: O 0.0057	model	[2] ZINKEVICH 2006	Table 5, p. 9, row 40 report
1080	peritectic: L+Ce2O3(A)->δ-Ce(bcc)	L: O 0.0011; A: O 0.598; bcc: O 0.0057	unspecified	[1] DJUROVIC 2008	Table 4, p. 6, row 10 report
1072	peritectoid: C+F=Ce7O12		experimental	[2] ZINKEVICH 2006 cites Kummerle 2000 doi	Table 5, p. 9, row 14 report
1005	peritectoid: bcc-Ce+A=fcc-Ce	bcc-Ce: O 0.0031; A: O 0.598; fcc-Ce: O 0.0049	model	[2] ZINKEVICH 2006	Table 5, p. 9, row 41 report
952	peritectoid: Ce7O12+F=Ce9O16		experimental	[2] ZINKEVICH 2006 cites Tuller 1977 doi	Table 5, p. 9, row 18 report
930	congruent transformation: F=F′+Fʺ	F: O 0.6586; F′: O 0.6586; Fʺ: O 0.6586	model	[2] ZINKEVICH 2006	Table 5, p. 9, row 39 report
913	peritectoid: Ce7O12+F=Ce9O16		experimental	[2] ZINKEVICH 2006 cites Ricken 1984 doi	Table 5, p. 9, row 19 report
911	peritectoid: Ce7O12+F=Ce9O16		experimental	[2] ZINKEVICH 2006 cites Kummerle 2000 doi	Table 5, p. 9, row 21 report
905	peritectoid: Ce7O12+F=Ce9O16	F: O 0.641	experimental	[2] ZINKEVICH 2006 cites Korner 1989	Table 5, p. 9, row 20 report
905	peritectoid: Ce7O12+F=Ce9O16	F: O 0.64003	model	[2] ZINKEVICH 2006	Table 5, p. 9, row 17 report
898	peritectoid: Ce9O16+F=Ce19O34		experimental	[2] ZINKEVICH 2006 cites Kummerle 2000 doi	Table 5, p. 9, row 24 report
885	eutectoid: C=A+Ce7O12	C: O 0.622; A: O 0.6	model	[2] ZINKEVICH 2006	Table 5, p. 9, row 15 report
880	peritectoid: Ce9O16+F=Ce19O34	F: O 0.64154	model	[2] ZINKEVICH 2006	Table 5, p. 9, row 22 report
880	peritectoid: Ce9O16+F=Ce19O34		experimental	[2] ZINKEVICH 2006 cites Ricken 1984 doi	Table 5, p. 9, row 23 report
873	eutectoid: C=A+Ce7O12		experimental	[2] ZINKEVICH 2006 cites Bevan 1964 doi	Table 5, p. 9, row 16 report
866	peritectoid: Ce19O34+F=Ce40O72		experimental	[2] ZINKEVICH 2006 cites Kummerle 2000 doi	Table 5, p. 9, row 28 report
860	peritectoid: Ce19O34+F=Ce40O72	F: O 0.645	experimental	[2] ZINKEVICH 2006 cites Korner 1989	Table 5, p. 9, row 27 report
855	peritectoid: Ce19O34+F=Ce40O72	F: O 0.6431	model	[2] ZINKEVICH 2006	Table 5, p. 9, row 25 report
850	peritectoid: Ce19O34+F=Ce40O72		experimental	[2] ZINKEVICH 2006 cites Ricken 1984 doi	Table 5, p. 9, row 26 report
766	peritectoid: Ce40O72+F=Ce62O112		experimental	[2] ZINKEVICH 2006 cites Ricken 1984 doi	Table 5, p. 9, row 30 report
760	peritectoid: Ce40O72+F=Ce62O112	F: O 0.64647	model	[2] ZINKEVICH 2006	Table 5, p. 9, row 29 report
756	peritectoid: Ce40O72+F=Ce62O112	F: O 0.647	experimental	[2] ZINKEVICH 2006 cites Korner 1989	Table 5, p. 9, row 31 report
755	peritectoid: Ce40O72+F=Ce62O112		experimental	[2] ZINKEVICH 2006 cites Kummerle 2000 doi	Table 5, p. 9, row 32 report
736	peritectoid: Ce62O112+F=Ce11O20		experimental	[2] ZINKEVICH 2006 cites Ricken 1984 doi	Table 5, p. 9, row 34 report
732	peritectoid: Ce62O112+F=Ce11O20	F: O 0.64736	model	[2] ZINKEVICH 2006	Table 5, p. 9, row 33 report
725	peritectoid: Ce62O112+F=Ce11O20	F: O 0.648	experimental	[2] ZINKEVICH 2006 cites Korner 1989	Table 5, p. 9, row 35 report
722	eutectoid: F′=Fʺ+Ce11O20	F′: O 0.6486; Fʺ: O 0.666	experimental	[2] ZINKEVICH 2006 cites Ricken 1984 doi	Table 5, p. 9, row 37 report
721	eutectoid: F′=Fʺ+Ce11O20	F′: O 0.64802; Fʺ: O 0.66504	model	[2] ZINKEVICH 2006	Table 5, p. 9, row 36 report
714	eutectoid: F′=Fʺ+Ce11O20		experimental	[2] ZINKEVICH 2006 cites Korner 1989	Table 5, p. 9, row 38 report

Formation enthalpies

Literature values in kJ/mol-atom where the per-atom basis is known. DFT columns: the lowest-energy entry at the same composition (Materials Project 2026.04.13, OQMD v1.8; different energy references, never averaged), from dft_parity.json.

Enthalpies of formation, Ce–O system (1)
Phase	Compound	Value	T (K)	Class	MP DFT (kJ/mol-atom)	OQMD DFT (kJ/mol-atom)	Source	Location	Quote
A-Ce2O3	Ce2O3	-358.476 kJ/mol-atom	298.15	model	-363.729 (mp-aaabewgf)	-339.664 (oqmd-16544)	[3] ZINKEVICH 2007	Table 6.1, p. 24, row 19 report

Other properties

Phase transition (6)

Phase transition, Ce–O system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
Phase transition	2338 K	2338	polymorphic: A <=> H alloy: O 0.6	model	[3] ZINKEVICH 2007	Table 2.2, p. 8, row 11 report
Phase transition	2413 K	2413	polymorphic: H <=> X alloy: O 0.6	model	[3] ZINKEVICH 2007	Table 2.2, p. 8, row 25 report
Phase transition	2500 K	2500	congruent melting: L=X L: O 0.583; X: O 0.583	model	[2] ZINKEVICH 2006	Table 5, p. 9, row 4 report
Phase transition	3000 K	3000	congruent transformation	model	[2] ZINKEVICH 2006	p. 12 report	While present work accumulates all previous knowledge about the Ce-O system, several new results were also obtained: 1) Probable value for the melting point of the stoichiometric CeO2 (3000 ± 20 K). The melting is congruent only under elevated pressure.
Phase transition	3306 K	3306	congruent melting: L=gas (P=1 bar) L: O 0.456; gas: O 0.456	model	[2] ZINKEVICH 2006	Table 5, p. 9, row 2 report
Phase transition	4111 K	4111	congruent melting: L=gas (P=1 bar) L: O 0.608; gas: O 0.608	model	[2] ZINKEVICH 2006	Table 5, p. 9, row 1 report

Phase equilibrium (12)

Phase equilibrium, Ce–O system
Property	T (K)	Phases / composition	Class	Source	Location
Phase composition	2415	other: Ce2O3 liquid: O 0.6	experimental	[2] ZINKEVICH 2006 cites Mordovin 1967	Table 3, p. 4, row 2 report
Phase composition	2433	other: Ce2O3 liquid: O 0.6	experimental	[2] ZINKEVICH 2006 cites Leonov 1966	Table 3, p. 4, row 1 report
Phase composition	2483	other: Ce2O3 liquid: O 0.6	experimental	[2] ZINKEVICH 2006 cites Sata 1968	Table 3, p. 4, row 3 report
Phase composition	2513	other: Ce2O3 liquid: O 0.6	experimental	[2] ZINKEVICH 2006 cites Shevthenko 1985	Table 3, p. 4, row 5 report
Phase composition	2513	other: Ce2O3 liquid: O 0.6	experimental	[2] ZINKEVICH 2006 cites Tresvyatskii 1971	Table 3, p. 4, row 4 report
Phase composition	2670	other: CeO2 liquid: O 0.666667	experimental	[2] ZINKEVICH 2006 cites Mordovin 1967	Table 3, p. 4, row 12 report
Phase composition	2753	other: CeO2 liquid: O 0.666667	experimental	[2] ZINKEVICH 2006 cites Foex 1966	Table 3, p. 4, row 11 report
Phase composition	2998	other: CeO2 liquid: O 0.666667	experimental	[2] ZINKEVICH 2006 cites Samsonov 1961	Table 3, p. 4, row 9 report
Phase composition	3000	other: CeO2 liquid: O 0.666667	experimental	[2] ZINKEVICH 2006 cites Brewer 1953	Table 3, p. 4, row 7 report
Phase composition	3023	other: CeO2 liquid: O 0.666667	experimental	[2] ZINKEVICH 2006 cites Ryskewitch 1960	Table 3, p. 4, row 8 report
Phase composition	3023	other: CeO2 liquid: O 0.666667	experimental	[2] ZINKEVICH 2006 cites Tresvyatkii 1964	Table 3, p. 4, row 10 report
Phase composition	3073	other: CeO2 liquid: O 0.666667	experimental	[2] ZINKEVICH 2006 cites Trombe 2006	Table 3, p. 4, row 6 report

Heat capacity / entropy / enthalpy (1)

Heat capacity / entropy / enthalpy, Ce–O system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
Entropy printed: °S	148.8 unknown	298.15	A-Ce2O3 alloy: O 0.6	model	[3] ZINKEVICH 2007	Table 6.1, p. 24, row 19 report

Crystal structure (22)

Crystal structure, Ce–O system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Lattice a	0.6757 not_printed ± 3.000e-4	298.15	Ce11O20 alloy: Ce 0.354839, O 0.645161	experimental	[2] ZINKEVICH 2006 cites Kummerle 1999	Table 1, p. 2, row 8 report
Lattice a	0.6627 not_printed	298.15	Ce19O34 alloy: Ce 0.358491, O 0.641509	experimental	[2] ZINKEVICH 2006 cites Knappe 1985	Table 1, p. 2, row 5 report
Lattice a	0.3891 not_printed ± 1.000e-4	298.15	Ce2O3-x (A)	experimental	[2] ZINKEVICH 2006 cites Barnigshausen 1985	Table 1, p. 2, row 1 report
Lattice a	0.6785 not_printed ± 1.000e-4	298.15	Ce7O12 alloy: Ce 0.368421, O 0.631579	experimental	[2] ZINKEVICH 2006 cites Kummerle 1999	Table 1, p. 2, row 3 report
Lattice a	6.785 Å ± 0.001	298.15	Ce7O12 alloy: Ce 0.368421, O 0.631579	experimental	[2] ZINKEVICH 2006 cites Kummerle 1999	Table 1, p. 2, row 11 report
Lattice a	5.4112 not_printed ± 0.001	298.15	CeO2-x (F)	experimental	[2] ZINKEVICH 2006 cites Kummerle 1999	Table 1, p. 2, row 9 report
Lattice b	1.026 not_printed ± 5.000e-4	298.15	Ce11O20 alloy: Ce 0.354839, O 0.645161	experimental	[2] ZINKEVICH 2006 cites Kummerle 1999	Table 1, p. 2, row 8 report
Lattice b	1.1478 not_printed	298.15	Ce19O34 alloy: Ce 0.358491, O 0.641509	experimental	[2] ZINKEVICH 2006 cites Knappe 1985	Table 1, p. 2, row 5 report
Lattice c	0.6732 not_printed ± 3.000e-4	298.15	Ce11O20 alloy: Ce 0.354839, O 0.645161	experimental	[2] ZINKEVICH 2006 cites Kummerle 1999	Table 1, p. 2, row 8 report
Lattice c	1.0123 not_printed	298.15	Ce19O34 alloy: Ce 0.358491, O 0.641509	experimental	[2] ZINKEVICH 2006 cites Knappe 1985	Table 1, p. 2, row 5 report
Lattice c	0.6059 not_printed ± 1.000e-4	298.15	Ce2O3-x (A)	experimental	[2] ZINKEVICH 2006 cites Barnigshausen 1985	Table 1, p. 2, row 1 report
lattice alpha	99.42 ° ± 0.01	298.15	Ce7O12 alloy: Ce 0.368421, O 0.631579	experimental	[2] ZINKEVICH 2006 cites Kummerle 1999	Table 1, p. 2, row 11 report
lattice molar volume	47.842 cm3 mol-1	298.15	Ce2O3 (A-type) alloy: O 0.6	model	[3] ZINKEVICH 2007	Table 3.1, p. 12, row 4 report
lattice molar volume	48.985 cm3 mol-1	298.15	Ce2O3 (B-type) alloy: O 0.6	model	[3] ZINKEVICH 2007	Table 3.1, p. 12, row 4 report
lattice molar volume	53.637 cm3 mol-1	298.15	Ce2O3 (C-type) alloy: O 0.6	model	[3] ZINKEVICH 2007	Table 3.1, p. 12, row 4 report
lattice unspecified angle	96.22 ° ± 0.04	298.15	Ce11O20 alloy: Ce 0.354839, O 0.645161	experimental	[2] ZINKEVICH 2006 cites Kummerle 1999	Table 1, p. 2, row 8 report
lattice unspecified angle	99.8 ° ± 0.04	298.15	Ce11O20 alloy: Ce 0.354839, O 0.645161	experimental	[2] ZINKEVICH 2006 cites Kummerle 1999	Table 1, p. 2, row 8 report
lattice unspecified angle	90.04 ° ± 0.04	298.15	Ce11O20 alloy: Ce 0.354839, O 0.645161	experimental	[2] ZINKEVICH 2006 cites Kummerle 1999	Table 1, p. 2, row 8 report
lattice unspecified angle	100.9 °	298.15	Ce19O34 alloy: Ce 0.358491, O 0.641509	experimental	[2] ZINKEVICH 2006 cites Knappe 1985	Table 1, p. 2, row 5 report
lattice unspecified angle	90 °	298.15	Ce19O34 alloy: Ce 0.358491, O 0.641509	experimental	[2] ZINKEVICH 2006 cites Knappe 1985	Table 1, p. 2, row 5 report
lattice unspecified angle	95.5 °	298.15	Ce19O34 alloy: Ce 0.358491, O 0.641509	experimental	[2] ZINKEVICH 2006 cites Knappe 1985	Table 1, p. 2, row 5 report
lattice unspecified angle	99.42 ° ± 0.01	298.15	Ce7O12 alloy: Ce 0.368421, O 0.631579	experimental	[2] ZINKEVICH 2006 cites Kummerle 1999	Table 1, p. 2, row 3 report

Sources

Reporting papers the values were read from (a value cited from another work names that work in its row).

D DJUROVIC, M ZINKEVICH, F ALDINGER, Thermodynamic modeling of the cerium–yttrium–oxygen system, Solid State Ionics 179, 1902-1911 (2008). doi:10.1016/j.ssi.2008.06.011
M ZINKEVICH, D DJUROVIC, F ALDINGER, Thermodynamic modelling of the cerium–oxygen system☆, Solid State Ionics 177, 989-1001 (2006). doi:10.1016/j.ssi.2006.02.044
M ZINKEVICH, Thermodynamics of rare earth sesquioxides, Progress in Materials Science 52, 597-647 (2007). doi:10.1016/j.pmatsci.2006.09.002

Please cite

R. Arróyave, J. Saal, D. Shin, ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature (version 2026.10; Version 1, machine-extracted), Zenodo (2026). doi:10.5281/zenodo.23735569
R. Arróyave, J. Saal, D. Shin, ORCHID-Diagrams: calculated binary phase diagrams (version 2026.10), Zenodo (2026). doi:10.5281/zenodo.23735859
R. Arróyave, J. Saal, D. Shin, ORCHID-Hulls: binary convex hulls (Materials Project, OQMD, assessed CALPHAD) (version 2026.10), Zenodo (2026). doi:10.5281/zenodo.23735891
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 the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work); 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). 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_literature_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735569},
  url       = {https://doi.org/10.5281/zenodo.23735569},
  note      = {Version 1, machine-extracted}
}

@misc{orchid_phase_diagrams_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Diagrams: calculated binary phase diagrams}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735859},
  url       = {https://doi.org/10.5281/zenodo.23735859}
}

@misc{orchid_hulls_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Hulls: binary convex hulls (Materials Project, OQMD, assessed CALPHAD)}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735891},
  url       = {https://doi.org/10.5281/zenodo.23735891}
}

@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}
}