Resistive magnetodielectric property of polycrystalline gamma-Fe2O3

Title
Resistive magnetodielectric property of polycrystalline gamma-Fe2O3
Authors
Jung, J.H
Keywords
magnetodielectric property, polycrystalline
Issue Date
2007-09
Publisher
American Institute of Physics
Abstract
We have systematically investigated the magnetodielectric property of polycrystalline gamma-Fe2O3. The dielectric constants of gamma-Fe2O3 seem to follow the Maxwell-Wagner model, i.e., their large enhancement and strong temperature and frequency dependences. Positive magnetodielectric property is observed with negative magnetoresistance, at least above 180 K. The value of magnetodielectric effect is maximized at the specific frequency, which is inversely proportional to resistivity. Based on the Maxwell-Wagner model and the magnetoresistance, we can reproduce the magnetodielectric effect of gamma-Fe2O3.
URI
http://dspace.inha.ac.kr/handle/10505/1483
Appears in Collections:
College of Natural Science(자연과학대학) > Physics (물리학) > Journal Papers, Peports(물리학 학술논문, 보고서)
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