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Magnetodielectric coupling in Ferromagnetic/Ferroelectric/Ferromagnetic spin capacitor

Published online by Cambridge University Press:  16 January 2017

F. Aponte*
Affiliation:
Department of Physics, University of Puerto Rico, San Juan, PR 00936, USA
R. Masso
Affiliation:
Department of Physics, University of Puerto Rico, San Juan, PR 00936, USA
K. Dasari
Affiliation:
Department of Physics, University of Puerto Rico, San Juan, PR 00936, USA
G. Sreenivasulu
Affiliation:
Physics Department, Oakland University, Rochester, Michigan, USA
G. Srinivasan
Affiliation:
Physics Department, Oakland University, Rochester, Michigan, USA
R. Palai
Affiliation:
Department of Physics, University of Puerto Rico, San Juan, PR 00936, USA
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Abstract

Ferromagnetic/Ferroelectric/Ferromagnetic (Ni/PZT/Ni) tri-layer artificial multiferroelectric structures in spin capacitor configuration were fabricated by sputtering ferromagnetic electrodes on PZT. Magnetocapacitance, magnetoimpedance, and phase angle measurements were carried out by a wide range of frequencies and magnetic fields at room temperature. We also compared the magnetodielectric measurements with Ni/PZT/Ag and Ag/PZT/Ag tri-layers structures. Ni/PZT/Ni spin capacitor shows a significantly different behavior compared to conventional PZT capacitor with Ag electrode and mixed electrode capacitor with one ferromagnetic and one conventional electrode.

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Copyright
Copyright © Materials Research Society 2017 

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