Magnetoelectric Coupling in Tb0.3Dy0.7Fe1.92/PbZr0.3Ti0.7O3 Bilayer Thin Films

Title
Magnetoelectric Coupling in Tb0.3Dy0.7Fe1.92/PbZr0.3Ti0.7O3 Bilayer Thin Films
Author(s)
이희영윤동진구창영이재열류정호[류정호]
Keywords
MAGNETOSTRICTIVE PROPERTIES; MULTIFERROIC PROPERTIES; COMPOSITES
Issue Date
201209
Publisher
IOP PUBLISHING LTD
Citation
JAPANESE JOURNAL OF APPLIED PHYSICS, v.51, no.9
Abstract
The magnetoelectric (ME) properties of Tb0.3Dy0.7Fe1.92 (Terfenol-D)/PbZr0.3Ti0.7O3 (PZT) thin films grown on a Pt(111)/Ti/SiO2/Si(100) substrate were investigated. The ferroelectric behavior of a Terfenol-D/PZT bilayer film stack was examined by polarization-electric field hysteresis measurement. The remnant polarization (P-r) and coercive field (E-c) values were found as 31 mu C/cm(2) and 124 kV/cm, respectively. The magnetic behavior was observed using a vibration sample magnetometer (VSM) at 300 K with saturation magnetization (M-s) and coercivity (H-c) values of 6.7 emu/cm(3) and 70 Oe, respectively. The application of magnetic field caused a piezomagnetic strain in the Terfenol-D layer hence, the piezoelectric voltage or charge in the PZT thin film was induced. The maximum magnetoelectric voltage coefficient (dE/dH) value of approximately 40mVcm(-1) Oe(-1) was obtained at the magnetic field of 5 kOe. (C) 2012 The Japan Society of Applied Physics
URI
http://hdl.handle.net/YU.REPOSITORY/27309http://dx.doi.org/10.1143/JJAP.51.093001
ISSN
0021-4922
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공과대학 > 신소재공학부 > Articles
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