Phase Behavior of La1-xMnO3-1.5x with Trivalent Manganese Ion

M. Kobayashi; Hirohisa Sato; Naoki Kamegashira

doi:10.4028/www.scientific.net/MSF.449-452.741

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HomeMaterials Science ForumMaterials Science Forum Vols. 449-452Phase Behavior of La1-xMnO3-1.5x with Trivalent...

Phase Behavior of La_1-xMnO_3-1.5x with Trivalent Manganese Ion

Abstract:

Defect perovskite, La_1-xMnO_3-1.5x (x=0.00-0.10), was synthesized by conventional ceramic method and phase transition was measured by X-ray diffractometry, electrical conductivity, thermal diffusivity and thermal analysis. La_1-xMnO_3-1.5x (x=0.00-0.09) have single orthorhombic phase corresponding to GdFeO₃ type perovskite structure at room temperature, while have rhombohedral structural at high temperature. The transition temperatures observed from electric conductivity, DSC, thermal diffusivity were mostly in agreement and they slightly decrease with increasing x.