Enhancement of room temperature magnetoresistance in double perovskite ferrimagnets

被引:40
作者
Zhou, JP [1 ]
Dass, R [1 ]
Yin, HQ [1 ]
Zhou, JS [1 ]
Rabenberg, L [1 ]
Goodenough, JB [1 ]
机构
[1] Univ Texas, Texas Mat Inst, Austin, TX 78712 USA
关键词
D O I
10.1063/1.373240
中图分类号
O59 [应用物理学];
学科分类号
摘要
The double perovskite Sr2FeMoO6 is a half-metallic ferrimagnet exhibiting significant magnetoresistance (MR) at 300 K in a magnetic field H < 2 kOe. A preliminary study of the influence of isovalent and aliovalent substitutions for Sr2+ on the magnitude of the room-temperature MR is reported. Of the polycrystalline samples, Sr(1.9)A(0.1)FeMoO(6) (A=Ca, Ba, La or Pr), the best result was obtained with the Ba(0.1) sample, which showed a factor of 2 enhancement of the MR over that previously reported for Sr2FeMoO6. (C) 2000 American Institute of Physics. [S0021-8979(00)26608-5].
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页码:5037 / 5039
页数:3
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