节点文献
TiO2复合对La2/3(Ca0.65Ba0.35)1/3MnO3电输运和磁电阻效应的影响
Effect of Complex TiO2 Addition on the Electrical Transport and Magnetoresistance Properties of La2/3(Ca0.65Ba0.35)1/3MnO3
【摘要】 利用甘氨酸-硝酸盐(GNP)法合成了La2/3(Ca0.65Ba0.35)1/3MnO3纳米颗粒体系,与TiO2复合后,得到La2/3(Ca0.65Ba0.35)1/3MnO3/xTiO2体系(x=0,0.02,0.035,0.055,0.09,0.17),通过X射线衍射、Raman光谱、扫描电子显微镜和磁电阻效应测试,对合成产物的结构及性能进行表征.结果表明,样品均成立方对称结构,复合使低场磁电阻增强,电阻率增大.
【Abstract】 La2/3(Ca0.65Ba0.35)1/3MnO3 fine powders were synthesied by a Glyine-Nitrate Process(GNP) method.The influences of TiO2 contents on the MR and electrical transport properties(resistivity) of a series of composite samples of La2/3(Ca0.65Ba0.35)1/3MnO3/xTiO2(x=0,0.02,0.035,0.055,0.09,0.17) were studied.Results show that TiO2 causes the low-field magnetoresistance,and increases the resistivity.
【关键词】 钙钛矿锰基氧化物；
复合；
颗粒表面；
自旋相关；
低场磁电阻效应；
【Key words】 manganite perovskite； composite； grain boundary； spin-correlation； low field magnetoresistance；
【Key words】 manganite perovskite； composite； grain boundary； spin-correlation； low field magnetoresistance；
- 【文献出处】 吉林大学学报(理学版) ,Journal of Jilin University(Science Edition) , 编辑部邮箱 ,2008年04期
- 【分类号】O482.5
- 【被引频次】2
- 【下载频次】104