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Title: An Unconventional Magnetoresistance in CoFe2O4 Core-BiFeO3 Shell Composite
Authors: Kulia, Sourav
Sahoo, M R
Barik, A
Vishwakarma, P N
Keywords: Magnetoresistance
Issue Date: Dec-2017
Citation: 62nd DAE Solid State Physics Symposium (DAE SSPS-2017, DAE Convention Centre, Anushaktinagar, BARC, Mumbai, India, 26-30 December 2017
Abstract: Magnetodielectric and magnetoresistance measurements are performed on the 40%CoFe2O4- 60%BiFeO3 core-shell composite above room temperature. The high value of positive magnetodielectric behavior originates due to Maxwell-Wagner effect which is very much supportive with negative MR behavior. The room temperature magnetic field dependent MR indicates the conventional spin polarized tunneling mechanism through interface. A spin-valve action is spotted in MR at 350K with an irreversibility. The most interesting is the MR behavior at 400K. A number of peculiar behavior has been observed which is very unusual at high temperature.
Description: Copyright of this document belongs to proceedings publisher
Appears in Collections:Conference Papers

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