Low Temperature Phase Transition Behavior of Ca-Doped Lanthanum Chromites
摘要
Phase transition of LaCrO3 and doped-LaCrO3 was studied by DSC, TG and XRD, and thermal expansion during the transition was analyzed. It is found that phase transition of LaCrO3 begins at about 240 ℃ and ends at about 265 ℃. Temperatures of phase transition rise obviously with increasing Ca2+ content. The transition of LaCrO3 and Ca-doped LaCrO3 from orthorhombic to rhombohedral is accompanied with endothermic reaction. No obvious change occurs in mass, but remarkable shrinkage occurs during phase transition.
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李胜利, 付贵福, 刘伟明, 等. Low Temperature Phase Transition Behavior of Ca-Doped Lanthanum Chromites[J]. Acta Scientiarum Naturalium Universitatis Sunyatseni, 2005.
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