Journal article
Temperature and field dependence of microwave losses in manganite powders
Journal of applied physics, v 86(2), pp 1067-1072
15 Jul 1999
Abstract
We report systematic measurements of the temperature and field dependence of microwave losses in micron-size powders (similar to 3 mu m) of the manganites Nd0.7Sr0.3MnO3, La0.7Ca0.3MnO3, La0.8Ba0.2MnO3, and La1.4Ca1.6Mn2O7. We fully confirm previous findings of a large increase in zero-field absorption, in La0.7Ba0.3MnO3 and La0.7Sr0.3MnO3, accompanying the onset of ferromagnetism and a concomitant colossal low-field magnetoimpedance (up to 80% at 600 Oe at room temperature). An oversimplified set of computations renders plausible support for interpreting these observations as arising from absorption in the spin system. Possible applications of these novel phenomena are also described. (C) 1999 American Institute of Physics. [S0021-8979(99)05814-4].
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Details
- Title
- Temperature and field dependence of microwave losses in manganite powders
- Creators
- V V SrinivasuS E LoflandS M BhagatK GhoshS D Tyagi
- Publication Details
- Journal of applied physics, v 86(2), pp 1067-1072
- Publisher
- American Institute of Physics
- Number of pages
- 6
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics
- Web of Science ID
- WOS:000081171800059
- Scopus ID
- 2-s2.0-0000318260
- Other Identifier
- 991019167515904721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Physics, Applied