溶胶-凝胶法制备la1 - xsr - xcro3及其电学性质的研究

Acta Physica Sinica (overseas Edition) Pub Date : 1999-09-01 DOI:10.1088/1004-423X/8/9/008

Liu Xiaomei, Yang Min, Lü Zhe, Pei-ze Li, L. Jiang, Su Wenhui

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引用次数: 1

摘要

采用溶胶-凝胶法制备La1-xSrxCrO3纳米颗粒。样品的烧结温度可降至400k左右。室温下La1-xSrxCrO3的晶体结构均为正交钙钛矿gdfeo3型(x≤0.4)。电导率随x增大而增大，但当x > 0.3时电导率减小。烧结温度越高，样品的电导率越好，因为样品的晶粒尺寸随着烧结温度的升高而增大。

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A STUDY ON SYNTHESIS OF La 1-x Sr x CrO 3 BY SOL-GEL AND THEIR ELECTRICAL PROPERTIES

La1-xSrxCrO3 nanoparticles were prepared by the sol-gel method. The sintering temperature of the samples could be decreased to about 400 K. The crystal structures of La1-xSrxCrO3 at room temperature are all of the othorhombic perovskite GdFeO3-type (x ≤ 0.4). And the electrical conductivity increases with x, but when x > 0.3 it decreases. The higher the sintering temperature, the better the electrical conductivity, because the grain size of the examples increases with increasing sintering temperature.

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Acta Physica Sinica (overseas Edition)

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