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Ferroelectrics Volume 401, 2010 - Issue 1
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SECTION A: THEORIES, MODELING, DOMAINS, PHASE TRANSITIONS AND CRITICAL PHENOMENA

Improvement of Ferroelectric and Leakage Current Properties with Zn-Mn Co-doping in BiFeO3 Thin Films

M. H. Lee School of Nano & Advanced Materials Eng., Changwon Nat'l Univ., Gyeongnam, 641-773, Korea
,
S. C. Lee School of Nano & Advanced Materials Eng., Changwon Nat'l Univ., Gyeongnam, 641-773, Korea
,
Y. S. Sung School of Nano & Advanced Materials Eng., Changwon Nat'l Univ., Gyeongnam, 641-773, Korea
,
M.-H. Kim School of Nano & Advanced Materials Eng., Changwon Nat'l Univ., Gyeongnam, 641-773, Korea
,
T. K. Song School of Nano & Advanced Materials Eng., Changwon Nat'l Univ., Gyeongnam, 641-773, Korea
,
W.-J. Kim Department of Physics, Changwon Nat'l Univ., Gyeongnam, 641-773, Korea
,
D. Do Department of Physics, Changwon Nat'l Univ., Gyeongnam, 641-773, Korea
,
S. S. Kim Department of Physics, Changwon Nat'l Univ., Gyeongnam, 641-773, Korea
,
J. H. Cho Department of Physics, Pukyong Nat'l Univ., Busan, 608-737, Korea
&
B. C. Choi Department of Physics, Pukyong Nat'l Univ., Busan, 608-737, Korea
 show all
Pages 186-191 | Received 23 Aug 2009, Published online: 01 Dec 2010
 
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Abstract

Ferroelectric and leakage current behaviors of Zn-Mn co-doped polycrystalline BiFeO3 (BFO) thin films fabricated by a pulsed laser deposition were investigated in comparison with un-doped BFO thin films. Ferroelectric hysteresis loop was observed in Zn-Mn co-doped BFO film capacitor: 2P r = 109 μC/cm2 and 2E C = 674 kV/cm with maximum electric field of 600 kV/cm. And leakage current was reduced with Zn-Mn co-doping at low electric field region and 10 mol% Bi-excess BFO film has best leakage current behavior in a wide electric field range.

Acknowledgment

This work was supported by the Korean Research Foundation Grant funded by the Korean Government (MOEHRD) (KRF-2007-412-J00901).

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