Strain control of phase transition and magnetic property in multiferroic BiFeO3 thin films
Name:
Strain control of.pdf
Size:
817.8Kb
Format:
PDF
Description:
Accepted manuscript
Embargo End Date:
2021-12-09
Type
ArticleAuthors
Zheng, WanchaoZheng, Dongxing
Li, Dong
Li, Peng

Zhang, Linxing
Gong, Junlu
Pang, Xin
Jin, Chao

Zhang, Xixiang

Bai, Haili
KAUST Department
Material Science and Engineering ProgramPhysical Science and Engineering (PSE) Division
KAUST Grant Number
CRF-2015-SENSORS-2709Date
2019-12-09Online Publication Date
2019-12-09Print Publication Date
2020-02Embargo End Date
2021-12-09Permanent link to this record
http://hdl.handle.net/10754/660918
Metadata
Show full item recordAbstract
BiFeO3 (BFO), a room-temperature antiferromagnetic-ferroelectric multiferroic, is widely researched due to its potential applications for electric-field control of the magnetism. In this work, the strain control of the phase transition and magnetic properties in the BFO/LaAlO3 heterostructures were investigated. The O K edge polarization-dependent X-ray absorption spectroscopy (XAS) spectra show that the Fe 3d level splits into five levels, which proves that the FeO5 pyramid is asymmetric in the highly strained tetragonal-like BFO. The spin canting induced by the asymmetric structure leads to the magnetic moment. Thus, an obvious magnetic signal in the 17-nm-thick BFO thin films was observed by the Quantum Design magnetic property measurement system. With the increase of the BFO film thickness, the clamping effect induced by the substrate becomes weak, further leading to the BFO phase transition. The O K edge polarization-dependent XAS spectra demonstrate that the orbital reconstruction exists at the mixed BFO phase boundaries. Since the orbital reconstructions can induce the strong magnetic coupling, the magnetic order of the different BFO phases will be coupled with each other. It causes a variation of the magnetic property at the phase boundaries or in the BFO phases.Citation
Zheng, W., Zheng, D., Li, D., Li, P., Zhang, L., Gong, J., … Bai, H. (2020). Strain control of phase transition and magnetic property in multiferroic BiFeO3 thin films. Thin Solid Films, 695, 137741. doi:10.1016/j.tsf.2019.137741Sponsors
H.L.B. was supported by the National Natural Science Foundation of China (51772207 & 11434006). D.X.Z. was supported by the National Natural Science Foundation of China (11704278). P.L. and X.X.Z. acknowledge the financial support from King Abdullah University of Science and Technology (KAUST), Office of Sponsored Research (OSR) under the Award No. CRF-2015-SENSORS-2709 (KAUST). The authors acknowledge Professor Huanhua Wang and Associate Professor Yu Chen for valuable discussions. The authors acknowledge the Beijing Synchrotron Radiation Facility (1W1A and 4B9B beamlines, China), Shanghai Synchrotron Radiation Facility (08U1A beamline, China) and the National Synchrotron Radiation Laboratory (12B-a beamline, China) of the Chinese Academy of Sciences.Publisher
Elsevier BVJournal
Thin Solid FilmsAdditional Links
https://linkinghub.elsevier.com/retrieve/pii/S0040609019307667ae974a485f413a2113503eed53cd6c53
10.1016/j.tsf.2019.137741