Temperature-dependent infrared properties of Ca doped (La,Sr)MnO3 compositions with potential thermal control application

被引：75
作者：
Fan, Desong [1 ]
Li, Qiang [1 ]
Xuan, Yimin [1 ]
Tan, Hong [1 ]
Fang, Junfei [1 ]
机构：
[1] Nanjing Univ Sci & Technol, Sch Energy & Power Engn, Nanjing 210094, Jiangsu, Peoples R China
来源：
APPLIED THERMAL ENGINEERING | 2013年 / 51卷 / 1-2期
基金：
美国国家科学基金会;
关键词：
Manganese oxides; Thermal control; Infrared reflectivity; Infrared emissivity; Metal-insulator transition; MANGANESE OXIDES; THERMOCHROMIC PROPERTIES; EMISSIVITY; EMITTANCE; FILM;
D O I：
10.1016/j.applthermaleng.2012.07.046
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The synthesized compositions La0.7Ca0.3-xSrxMnO3 show their potential in thermal control application. The crystal structure, surface morphology, and the temperature dependence of resistivity, infrared spectra and emissivities for the compositions are reported. All of the synthesized compositions exhibit the characteristics of perovskite structure and of metal insulator transition. Crystal structure of the compositions changes from the orthorhombic to the rhombohedral structure with increasing doping level (x). The infrared properties of compositions can be automatically adjusted basing on variation in temperature. In the temperature range 97-373 K, the variation amplitude of infrared emissivity exceeds 0.5. The potential application of the compositions in thermal management is discussed. (c) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：255 / 261
页数：7
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