Thermal conductivity and infrared spectra study of polycrystalline La0.67Ca0.33MnO3

Li ZQ; Gao YQ; Li YX; Jiang EY

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Thermal conductivity and infrared spectra study of polycrystalline La0.67Ca0.33MnO3

机译：La0.67Ca0.33MnO3多晶的热导率和红外光谱研究

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The thermal conductivity and infrared transmission spectra of La0.67Ca0.33MnO3 are investigated systematically. The thermal conductivity increases abruptly as the temperature is decreased through the Curie temperature. The effective charge carriers number and the frequency of transverse optic phonon corresponding to the stretching mode also increase dramatically along with decreasing temperature near Curie temperature. Combining our observation with previous reported results, we ascribe the abrupt change of thermal conductivity to the itinerating of the charge carriers due to the remarkable reduction of Jahn-Teller distortion below the Curie temperature. (c) 2006 Elsevier B.V. All rights reserved.

机译：系统地研究了La0.67Ca0.33MnO3的热导率和红外透射光谱。随着温度降低到居里温度，热导率突然增加。随着居里温度附近温度的降低，有效的载流子数和与拉伸模式相对应的横向光学声子的频率也急剧增加。结合我们的观察结果和先前报道的结果，我们将热导率的突然变化归因于电荷载流子的迭代，这归因于居里温度以下的Jahn-Teller畸变显着降低。（c）2006 Elsevier B.V.保留所有权利。

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《Physics Letters, A》 |2006年第2期|共4页
作者
Li ZQ; Gao YQ; Li YX; Jiang EY;
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正文语种 eng
中图分类物理学;
关键词
manganites; colossal magnetoresistance; thermal conduction; infrared spectra; DOUBLE EXCHANGE; COLOSSAL-MAGNETORESISTANCE; LOW-FIELD; GIANT MAGNETORESISTANCE; MANGANESE PEROVSKITES; TRANSPORT-PROPERTIES; MAGNETIC-PROPERTIES; TRANSITION; LA2/3CA1/3MNO3; LA1-XCAXMNO3;

机译：锰;巨大的磁阻;热传导;红外光谱;双交换;大磁致电阻;低场;大磁致电阻;锰钙钛矿;运输性能;磁性能;转变;LA2 / 3CAXCNOM3LA;

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1. Thermal conductivity and infrared spectra study of polycrystalline La0.67Ca0.33MnO3 [J] . Li ZQ, Gao YQ, Li YX, Physics Letters, A . 2006,第2期

机译：La0.67Ca0.33MnO3多晶的热导率和红外光谱研究
2. Simultaneous measurement of thermal conductivity and diffusivity of an undoped A10.33Ga0.67As thin film epitaxially grown on a heavily Zn doped GaAs using spectrally-resolved modulated photothermal infrared radiometry (vol 662, pg 69, 2018) [J] . Pawlak M., Pal S., Scholz S., Thermochimica Acta: An International Journal Concerned with the Broader Aspects of Thermochemistry and Its Applications to Chemical Problems . 2018,第期

机译：使用光谱分辨的调节光热红外辐射测定（VOL 662，PG 69,2018），同时在重Zn掺杂的光热红外辐射测定（Vol 662，PG 69,208）上外延地生长在重型Zn掺杂GaAs上的热导电和扩散率的热导率和扩散率。
3. Simultaneous measurement of thermal conductivity and diffusivity of an undoped Al0.33Ga0.67As thin film epitaxially grown on a heavily Zn doped GaAs using spectrally-resolved modulated photothermal infrared radiometry [J] . Pawlak M., Pal S., Scholz S., Thermochimica Acta: An International Journal Concerned with the Broader Aspects of Thermochemistry and Its Applications to Chemical Problems . 2018,第期

机译：使用光谱分辨的调制光热红外辐射测量同时在大Zn掺杂的GaAs上外延生长的未掺杂Al0.33ga0.67as薄膜的热导率和扩散性的同时测量薄膜
4. Thermal conductivity of polycrystalline aluminum nitride films: Effects of the microstructure, interfacial thermal resistance and local oxidation [C] . Juliana Jaramillo-Fernandez, Jose Ordonez-Miranda, Wassim Kassem, International Workshop on Thermal investigations of ICs and Systems . 2015

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5. Integrating visible, near infrared and short wave infrared hyperspectral and multispectral thermal imagery for geological mapping at Cuprite, Nevada. [D] . Chen, Xianfeng. 2005

机译：整合可见，近红外和短波红外高光谱和多光谱热成像仪，以进行内华达州库珀特的地质填图。
6. Thermal Conductivity of Diamond/SiCNano-Polycrystalline Composites and Phonon Scatteringat Interfaces [O] . Huicong Dong, Bin Wen, *, 2017

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7. Infrared studies of a La0.67Ca0.33MnO3 single crystal: Optical magnetoconductivity in a half-metallic ferromagnet [O] . Boris A.V., Kovaleva N.N., Bazhenov A.V., 1999

机译：La0.67Ca0.33MnO3单晶的红外研究：半金属铁磁体中的光学磁导率

Thermal conductivity and infrared spectra study of polycrystalline La0.67Ca0.33MnO3

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