Ferroelectric and magnetic properties of Fe-doped BaTiO3 thin films grown by the pulsed laser deposition

被引：0

作者：

Ramana, E. Venkata ^{[1
]}

Lee, B. W. ^{[1
]}

Jung, C. U. ^{[1
]}

Jung, Ranju ^{[2
]}

Yang, S. M. ^{[3
]}

Jung, M. H. ^{[4
]}

机构：

[1] Hankuk Univ Foreign Studies, Dept Phys, Yongin 449791, Gyeonggi Do, South Korea

[2] Kwangwoon Univ, Dept Elect, Seoul 139701, South Korea

[3] Seoul Natl Univ, Dept Phys & Astron, ReCFI, Seoul 151747, South Korea

[4] Sogang Univ, Dept Phys, Seoul 121742, South Korea

来源：

2012 INTERNATIONAL SYMPOSIUM ON APPLICATIONS OF FERROELECTRICS HELD JOINTLY WITH 11TH IEEE ECAPD AND IEEE PFM (ISAF/ECAPD/PFM) | 2012年

基金：

新加坡国家研究基金会;

关键词：

multiferroic; epitaxial; ferroelectric; piezoresponse; ferromagnetic;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Fe-doped BaTiO3 thin films were grown on (001) oriented SrTiO3 substrates using pulsed-laser deposition technique. These films had a single-phase character and good epitaxial relationship with the substrate. Polarization-electric field (P-E) hysteresis revealed a saturated polarization with a remnant polarization (P-r) of 13.5 mu C/cm(2) for 10 mol% Fe-doped BaTiO3 films. Further increase of composition resulted in the large leakage currents and reduction of polarization. The piezoelectric domain switching in the films was confirmed by local hysteresis using piezoelectric force microscopy measurements. The Fe-doped BaTiO3 thin films exhibited room temperature ferromagnetism, and the magnetization value increased with increasing Fe concentration. Our results demonstrated that the addition of Fe <= 10 mol% in BaTiO3 induce the ferromagnetism and the switchable ferroelectric state.

引用

页数：4

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