Effect of a magnetic field on the permittivity of 80%La{sub 0.7}Sr{sub 0.3}MnO{sub 3}/20%GeO{sub 2} composite
Journal Article
·
· Physics of the Solid State
- Southern Federal University (Russian Federation)
The dielectric properties of a magnetoresistive conducting two-phase 80%La{sub 0.7}Sr{sub 0.3}MnO{sub 3}/20%GeO{sub 2} (wt %) composite have been studied near the percolation threshold in magnetic fields from 0 to 15 kOe at frequencies of the measurement field from 5 kHz to 1 MHz. The samples have inductive impedances; i.e., their permittivities can be considered negative due to a high conductivity in this frequency range. The permittivity increases in magnitude in magnetic field, and the values of the magnetodielectric coefficient reach 23% at room temperature. The reasons for the effect of magnetic field on the dielectric permittivity of samples are discussed.
- OSTI ID:
- 22771510
- Journal Information:
- Physics of the Solid State, Journal Name: Physics of the Solid State Journal Issue: 1 Vol. 60; ISSN 1063-7834
- Country of Publication:
- United States
- Language:
- English
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