Dielectric relaxation in the DyMn1−xFexO3 system | Zendy

Fang Hong | Zendy; Zhenxiang Cheng | Zendy; Shujun Zhang | Zendy; Xiaolin Wang | Zendy

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Dielectric relaxation in the DyMn1−xFexO3 system

Author(s) -

Fang Hong,

Zhenxiang Cheng,

Shujun Zhang,

Xiaolin Wang

Publication year - 2012

Publication title -

journal of applied physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.699

H-Index - 319

eISSN - 1089-7550

pISSN - 0021-8979

DOI - 10.1063/1.3681807

Subject(s) - activation energy , arrhenius equation , dielectric , relaxation (psychology) , condensed matter physics , materials science , dispersion (optics) , perovskite (structure) , range (aeronautics) , frequency dependence , nuclear magnetic resonance , thermodynamics , chemistry , physics , crystallography , optics , psychology , social psychology , optoelectronics , composite material

The dielectric constant and loss of perovskite DyMn1−xFexO3 samples show strong dispersion in various frequencies, which is indicative of relaxation. The activation energies were obtained through Arrhenius law fitting and range from 0.213 eV to 0.385 eV. The Fe content dependence of the characteristic frequency f0 and the activation energy Eα shows two transitions that are well consistent with the change in orbital ordering. Meanwhile, different magnetic orderings could affect the relaxation and induce the change in Eα.

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