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。
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.
出处
《应用物理》
2016年第4期77-82,共6页
Applied Physics
基金
国家重点基础研究发展计划(973)项目(批准号:2011CBA00200)
国家自然科学基金(批准号:60876069)
教育厅B类(JB14028)
福建省大学生创新创业计划项目(201510394051)资助的课题。
