La0.7Sr0.3MnO3/xZn0.95Co0.05O复合体系的电磁输运特性
Electromagnetic Transport Properties of La0.7Sr0.3MnO3/xZn0.95Co0.05OComposite

作者: 庄 彬 * , 霍冠忠 , 熊力群 , 陈水源 , 林应斌 , 黄志高 :福建师范大学物理与能源学院,福建省量子调控与新能源材料重点实验室,福建 福州;

关键词: La0.7Sr0.3MnO3Zn0.95Co0.05O边界材料复合体系磁电输运La0.7Sr0.3MnO3 Zn0.95Co0.05O Boundary Materials Composite Electromagnetic Transport

摘要:
选取高居里温度(Tc约350 K)、高自旋极化率的La0.7Sr0.3MnO3为磁性相,弱磁性的稀磁半导体材料Zn0.95Co0.05O作为边界材料,采用溶胶-凝胶法制备La0.7Sr0.3MnO3:xZn0.95Co0.05O (x = 0.0, 0.1, 0.2, 0.3, 0.4 mol)复合体系。对样品的结构、电磁输运特性测量结果分析表明,边界材料对磁电阻的影响显著,x值增大导致磁电阻增加;当加上小磁场后,出现了低场下的高磁电阻。

Abstract: Selecting high Curie temperature (Tc = 350 K) and high spin polarization La0.7Sr0.3MnO3 as mag-netic phase, weak magnetic dilute magnetic semiconductor materials Zn0.95Co0.05O as border material, La0.7Sr0.3MnO3:xZn0.95Co0.05O (x = 0.0, 0.1, 0.2, 0.3, 0.4 mol) composite was prepared by sol- gel method. The results measuring crystal structure and electromagnetic transport properties indicated that, boundary materials have effect on the magnetic resistance significantly; magnetic resistance increases with the x value; with small magnetic field, the low field's high magnetic resistance exists.

文章引用: 庄 彬 , 霍冠忠 , 熊力群 , 陈水源 , 林应斌 , 黄志高 (2016) La0.7Sr0.3MnO3/xZn0.95Co0.05O复合体系的电磁输运特性。 应用物理, 6, 77-82. doi: 10.12677/APP.2016.64011

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