Controlled Synthesis and Properties of La1-x-y CaxKy MnO3

doi:10.7503/cjcu20120303

Abstract

Abstract:

Perovskite La_1-x-y Ca_xK_y MnO₃(0.05≤x≤0.49; 0.05≤y≤0.21) crystals have been hydrothermally synthesized through controlling the molar ratio of Ca²⁺ to La³⁺ of the reactant solution. The structures, morphologies, compositions and magnetic properties of the crystals were studied by X-ray diffractometer(XRD), inductively coupled plasma(ICP) analyzer, scanning electron microscope(SEM) and vibrating sample magnetometer(VSM), respectively. The results show that the crystals were prepared from the disproportionation reaction. Two ferromagnetic phases could also be observed, which could be attributed to the doping of K⁺ ions.

Key words: Hydrothermal synthesis, Disproportionation reaction, Three oxide states, Two ferromagnetic phases

CLC Number:

O611

TrendMD:

CHU Xue-Feng, HUANG Ke-Ke, HOU Chang-Min, GE Lei, WU Xiao-Feng, DU Yan-Yan. Controlled Synthesis and Properties of La_1-x-y Ca_xK_y MnO₃[J]. Chem. J. Chinese Universities, 2013, 34(1): 40.

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Controlled Synthesis and Properties of La_1-x-y Ca_xK_y MnO₃

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