Effect of a magnetic field on the permittivity of 80%La0.7Sr0.3MnO3/20%GeO2 composite
| Autor: | V. K. Yatsenko, E. I. Sitalo, A. S. Bogatin, V. G. Gavrilyachenko, Yu. V. Kabirov |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Permittivity Materials science Magnetoresistance Condensed matter physics Field (physics) Percolation threshold 02 engineering and technology Dielectric Conductivity 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Electronic Optical and Magnetic Materials Magnetic field 0103 physical sciences 0210 nano-technology Electrical impedance |
| Zdroj: | Physics of the Solid State. 60:60-63 |
| ISSN: | 1090-6460 1063-7834 |
| DOI: | 10.1134/s1063783418010110 |
| Popis: | The dielectric properties of a magnetoresistive conducting two-phase 80%La0.7Sr0.3MnO3/20%GeO2 (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. |
| Databáze: | OpenAIRE |
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