標題: Piezoelectric and piezomagnetic force microscopies of multiferroic BiFeO3-LiMn2O4 heterostructures
作者: Eshghinejad, Ahmad
Liang, Wen-I.
Chen, Qian Nataly
Ma, Feiyue
Liu, Yuanming
Xie, Shuhong
Chu, Ying-Hao
Li, Jiangyu
材料科學與工程學系
Department of Materials Science and Engineering
公開日期: 14-Aug-2014
摘要: BiFeO3-LiMn2O4 (BFO-LMO) heterostructures were fabricated via pulsed laser deposition, and their ferroelectric and ferromagnetic properties were probed by magnetic force microscopy (MFM), piezoresponse force microscopy (PFM), and the newly developed piezomagnetic force microscopy (PmFM). MFM imaging shows no clear distinction between BFO and LMO phases, while PFM and PmFM mappings clearly distinguish LMO nanopillars from BFO matrix. Linear piezoelectric and piezomagnetic responses have been observed in both phases, with the effects more prominent in BFO. The strong piezomagnetic response in BFO is believed to arise from Mn doping, while piezoelectric-like response of LMO is attributed to ionic activities as well as vertical geometry of the heterostructure. The limitation of global excitation of PmFM is also discussed. (C) 2014 AIP Publishing LLC.
URI: http://dx.doi.org/10.1063/1.4891344
http://hdl.handle.net/11536/25065
ISSN: 0021-8979
DOI: 10.1063/1.4891344
期刊: JOURNAL OF APPLIED PHYSICS
Volume: 116
Issue: 6
結束頁: 
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