过渡金属离子掺杂对La1.2Ca1.8Mn2O7输运性质的影响

低温物理学报 , 2005, 27(4): 338-343. doi: 10.3969/j.issn.1000-3258.2005.04.009

过渡金属离子掺杂对La1.2Ca1.8Mn2O7输运性质的影响

陈春霞 ^1, , 章建辉 ^2, , 钱天 ^3, , 周桃飞 ^4, , 李慧玲 ^5,

1.中国科学技术大学材料科学与工程系,合肥,230026;安庆师范学院物理系,安徽安庆,246011

2.中国科学技术大学材料科学与工程系,合肥,230026

3.中国科学技术大学材料科学与工程系,合肥,230026

4.中国科学技术大学材料科学与工程系,合肥,230026

5.中国科学技术大学材料科学与工程系,合肥,230026

关键词：锰氧化物 , 输运性质 , 过渡金属 , 掺杂

TRANSITION-ELEMENT DOPING EFFECTS IN La1.2Ca1.8Mn2O7

研究了过渡金属元素掺杂对层状钙钛矿结构锰氧化物La1.2Ca1.8Mn2O7体系输运性质的影响.实验结果表明不同过渡金属离子掺杂均导致体系的金属-绝缘转变温度降低,电阻率与最大磁电阻值(Cr除外)增加.当掺杂量较高时,磁性Cr、Fe、Co、Ni离子对体系性质的影响与其磁性相互作用密切相关.

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过渡金属离子掺杂对La1.2Ca1.8Mn2O7输运性质的影响

TRANSITION-ELEMENT DOPING EFFECTS IN La1.2Ca1.8Mn2O7

参考文献