TY - JOUR
T1 - Enthalpies of formation of LaMO3 perovskites (M = Cr, Fe, Co, and Ni)
AU - Cheng, Jihong
AU - Navrotsky, Alexandra
AU - Zhou, Xiao Dong
AU - Anderson, Harlan U.
N1 - Funding Information:
The authors thank S. Roeske for help with the electron microprobe analysis. This project was supported by the U.S. Department of Energy (DOE) (Grant No. DEFG03– 97ER45654).
PY - 2005/1
Y1 - 2005/1
N2 - Enthalpies of formation from constituent oxides and elements at 298 K were determined by high-temperature oxide melt solution calorimetry for a group of technologically important perovskites LaMO3 (M = Cr, Fe, Co, and Ni). The enthalpies of formation of LaCrO3 and LaFeO3 from oxides (La2O3 and Cr2O3 or Fe2O3) are -70.06 ± 2.79 kJ/mol and -64.58 ± 2.32 kJ/mol, respectively. The enthalpies of formation of LaCoO3 and LaNiO3 from oxides (La2O3 and CoO or NiO) and O2 are -107.64 ± 1.77 kJ/mol and -57.31 ± 2.55 kJ/mol, respectively. All these data are evaluated and found to be consistent with literature values obtained using other methods. The relative stability among these four perovskites decreases in the order of Cr, Fe, Co, Ni.
AB - Enthalpies of formation from constituent oxides and elements at 298 K were determined by high-temperature oxide melt solution calorimetry for a group of technologically important perovskites LaMO3 (M = Cr, Fe, Co, and Ni). The enthalpies of formation of LaCrO3 and LaFeO3 from oxides (La2O3 and Cr2O3 or Fe2O3) are -70.06 ± 2.79 kJ/mol and -64.58 ± 2.32 kJ/mol, respectively. The enthalpies of formation of LaCoO3 and LaNiO3 from oxides (La2O3 and CoO or NiO) and O2 are -107.64 ± 1.77 kJ/mol and -57.31 ± 2.55 kJ/mol, respectively. All these data are evaluated and found to be consistent with literature values obtained using other methods. The relative stability among these four perovskites decreases in the order of Cr, Fe, Co, Ni.
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U2 - 10.1557/JMR.2005.0018
DO - 10.1557/JMR.2005.0018
M3 - Article
AN - SCOPUS:22144443890
SN - 0884-2914
VL - 20
SP - 191
EP - 200
JO - Journal of Materials Research
JF - Journal of Materials Research
IS - 1
ER -