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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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钙钛矿结构锰氧化物La0.67Ca0.33MnO3的内耗研究
Keywords: 内耗,钙钛矿锰氧化物,电子相分离
Abstract:
用内耗的方法测量了钙钛矿结构锰氧化物La0.67Ca0.33MnO3的内耗温度曲线Q^-1(T)，在260，222和105K温度处分别出现内耗峰，分析表明105K处的内耗峰与铁磁态中的电子相分离有关。222K处的内耗峰由两个次峰构成，峰温分别为222和234K，并具有弛豫特征，与绝缘畴和金属畴的相对移动有关．它们的激活能以及指数前因子分别为0.32eV，2.0×10^-12s和0.38eV，2.5±10^-13s.
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