Room temperature colossal microwave magnetoimpedance in micron-size powders of La0.7Ba0.3MnO3 and La0.7Sr0.3MnO3 -: A novel magnetic tape

被引：52

作者：

Srinivasu, VV ^{[1
]}

Lofland, SE ^{[1
]}

Bhagat, SM ^{[1
]}

机构：

[1] Marshall Univ, Dept Phys, College Pk, MD 20742 USA

来源：

JOURNAL OF APPLIED PHYSICS | 1998年 / 83卷 / 05期

关键词：

D O I：

10.1063/1.367050

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report measurements of microwave loss in micron-size powders of the manganites La0.7Ba0.3MnO3 and La0.7Sr0.3MnO3, as functions of temperature and magnetic field. At zero field, the loss increases rapidly as the temperature is lowered below a frequency-dependent temperature T*. The more exciting observation is that at, 295 K, the loss drops by nearly 80% in an applied field of 600 Oe. Using this effect, a magnetic tape was "manufactured." (C) 1998 American Institute of Physics.

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页码：2866 / 2868

页数：3

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