<![CDATA[Infrared properties of perovskite manganites La <ce:inf loc='post'>1? <ce:italic>x</ce:italic> </ce:inf>Ca <ce:inf loc='post'> <ce:italic>x</ce:italic> </ce:inf>MnO <ce:inf loc='post'>3</ce:inf> with 0.25?≤? <ce:italic>x</ce:italic>?≤?0.45]]>

X.H. Huang; H.Y. Lin; Z.J. Cheng

首页> 外文期刊>Physica, B. Condensed Matter >1? x Ca x MnO 3 with 0.25?≤? x?≤?0.45]]>

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1? x Ca x MnO 3 with 0.25?≤? x?≤?0.45]]>

机译：<！[CDATA [CDATA [CDATATHED植物锰锰的 1？ x 作为 x mno <什么：INF PLACE =“POST”> 3 ，0.25？≤？ <什么：斜体> x ？≤0.45]]>

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Abstract

The systematical investigations of infrared phonon spectra were performed on the perovskite manganites La1?xCaxMnO3with 0.25?≤?x?≤?0.45. Both frequency shift of stretching mode and effective number of carriersneff?(T)change dramatically near the Curie temperature for all compounds. Moreover, Ca concentration dependences of variations of the phonon frequencies andneff?(T)shows their extreme values aroundx?=?0.35 and 0.40 respectively at the measuring temperatures. With the varying Ca concentration, the competition between the strong Jahn-Teller coupling and the magnetic double exchange interaction may be responsible for those results.

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抽象

在佩洛克斯锰矿物La 1？ x ca x mno 3 ，0.25？≤≤≤≤x≤≤x≤x≤x≤x≤x≤x≤x？Δ≤≤x≤0.45。拉伸模式的频移和有效数量的载波 n e f < / mml：mi> f ？（ t ）对所有化合物的居里温度差异急剧变化。此外，声子频率和 n e f f ？（ t ）显示它们周围的极端值 x ？Δ=？0.35和0.40分别在测量温度下。随着CA浓度的不同，强大的JAHN纸耦合和磁双交换相互作用之间的竞争可能对这些结果负责。 ]]>

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来源
《Physica, B. Condensed Matter》 |2018年第2018期|共5页
作者
X.H. Huang; H.Y. Lin; Z.J. Cheng;
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作者单位

School of Opto-Electronic and Communication Engineering Xiamen University of Technology;

School of Opto-Electronic and Communication Engineering Xiamen University of Technology;

School of Opto-Electronic and Communication Engineering Xiamen University of Technology;

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原文格式 PDF
正文语种 eng
中图分类物理学;
关键词
La1?xCaxMnO3; Infrared spectra; Electron-phonon coupling; Transport property; Double exchange;

机译：la1？xcaxmno3;红外光谱;电子 - 声子耦合;运输财产;双重交换;

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1? x Ca x MnO 3 with 0.25?≤? x?≤?0.45]]>

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