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掺杂量x对锰氧化物La0.7Sr0.3-xAgxMnO3结合能与Mn^4+离子含量的影响 被引量:1

Influence of Doping Level x on Cohesive Energy and Mn^4+ Ion Content of La0.7Sr0.3-xAgxMnO3 Manganites
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摘要 在晶体缺陷的热平衡原理的基础上,通过计算体系的结合能解释了钙钛矿锰氧化物La0.7Sr0.3-xAgxMnO3的晶胞体积随掺杂量x的增加而增大的实验现象,以及样品的居里温度疋随掺杂量x的增加而降低的现象。 Based on the thermal equilibrium theory of crystal defects, the phenomenon of unit cell volume of La0.7Sr0.3-xAgxMnO3 perovskite manganites increases with increasing the doping level x, has been explained through computating cohesive energy of the system, as well as the phenomenon that the Curie temperature Tc decreases with the doping x increase.
出处 《纳米科技》 2008年第1期10-14,共5页
基金 国家自然科学基金项目(10774037) 河北省自然科学基金项目(E2006000168)
关键词 结合能 双交换机制 钙钛矿 空位 cohesive energy double exchange mechanism perovskite vacancy
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