La_(0.3)Sr_(0.7)CrO_3钙钛矿化合物高压合成和物性  

The High Pressure Synthesis and Properties of La_(0.3)Sr_(0.7)CrO_3

作　　者：吕玉玺[1] 李凤英[1] 靳常青[1] 

机构地区：[1]中国科学院物理研究所,北京100190

出　　处：《高压物理学报》2012年第2期185-188,共4页Chinese Journal of High Pressure Physics

摘　　要：采用高压高温方法合成了单相的带宽调控型La0.3Sr0.7CrO3Mott化合物,对其晶体结构和磁学性质进行了研究。结果表明:La0.3Sr0.7CrO3化合物具有立方钙钛矿晶体结构,温度在170K以上其磁性为顺磁性,满足居里-外斯定律,温度低于20.7K发生了自旋玻璃转变。We synthesized La0.3Sr0.7CrO3 Mott compound by using high pressure and high temperature sintering method;and studied the crystal structure and magnetic properties.It is shown that La0.3Sr0.7CrO3 adopts a cubic perovskite structure at room temperature.Above 170 K La0.3Sr0.7CrO3 is paramagnetism with the χ（T） curve being fitted by Curie-Weiss law,while a spin glass transition was found in La0.3Sr0.7CrO3 below 20.7 K.

关 键 词：高压高温合成 La0.3Sr0.7CrO3 钙钛矿 

分 类 号：O641.4[理学—物理化学]