Magnetic field dependence of the effective permittivity in multiferroic composites
| Autor: | Davresh Hasanyan, Yaojin Wang, Ravindranath Viswan, Menghui Li, Jiefang Li, Dwight D. Viehland, Junqi Gao |
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| Rok vydání: | 2012 |
| Předmět: |
Permittivity
Materials science Dielectric permittivity Resonance Relative permittivity Surfaces and Interfaces Dielectric Condensed Matter Physics Surfaces Coatings and Films Electronic Optical and Magnetic Materials Magnetic field Low magnetic field Materials Chemistry Multiferroics Electrical and Electronic Engineering Composite material |
| Zdroj: | physica status solidi (a). 209:2059-2062 |
| ISSN: | 1862-6300 |
| DOI: | 10.1002/pssa.201228278 |
| Popis: | A sensitive tuning of dielectric properties under the application of magnetic field in Fe74.4Co21.6Si0.5B3.3Mn0.1C0.1/0.7Pb(Mg1/3Nb2/3)O3-0.3PbTiO3 multiferroic composites is presented. We demonstrate large variations of the effective permittivity at resonance region under extremely low magnetic field of 4 Oe near room temperature. The tuning of the maximum dielectric permittivity at resonance and the corresponding frequency was systematically studied. We suggest that the magnetic dependence of the effective permittivity is consistent with a strain-mediated magnetic-elasto-dielectric effect. Our results suggest a route towards future applications of the dielectric properties tuning effect in advanced devices. |
| Databáze: | OpenAIRE |
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