Strain control of phase transition and magnetic property in multiferroic BiFeO3 thin films

Wanchao Zheng; Dongxing Zheng; Dong Li; Peng Li; Linxing Zhang; Junlu Gong; Xin Pang; Chao Jin; Xixiang Zhang; Haili Bai

doi:10.1016/j.tsf.2019.137741

Strain control of phase transition and magnetic property in multiferroic BiFeO3 thin films

Wanchao Zheng, Dongxing Zheng, Dong Li, Peng Li, Linxing Zhang, Junlu Gong, Xin Pang, Chao Jin, Xixiang Zhang, Haili Bai

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

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.

Original language	English (US)
Pages (from-to)	137741
Journal	Thin Solid Films
Volume	695
DOIs	https://doi.org/10.1016/j.tsf.2019.137741
State	Published - Dec 9 2019

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): CRF-2015-SENSORS-2709
Acknowledgements: 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.

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@article{57cf937afe9b43688b3cc00440954305,

title = "Strain control of phase transition and magnetic property in multiferroic BiFeO3 thin films",

abstract = "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.",

author = "Wanchao Zheng and Dongxing Zheng and Dong Li and Peng Li and Linxing Zhang and Junlu Gong and Xin Pang and Chao Jin and Xixiang Zhang and Haili Bai",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledged KAUST grant number(s): CRF-2015-SENSORS-2709 Acknowledgements: 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.",

year = "2019",

month = dec,

day = "9",

doi = "10.1016/j.tsf.2019.137741",

language = "English (US)",

volume = "695",

pages = "137741",

journal = "Thin Solid Films",

issn = "0040-6090",

publisher = "Elsevier B.V.",

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T1 - Strain control of phase transition and magnetic property in multiferroic BiFeO3 thin films

AU - Zheng, Wanchao

AU - Zheng, Dongxing

AU - Li, Dong

AU - Li, Peng

AU - Zhang, Linxing

AU - Gong, Junlu

AU - Pang, Xin

AU - Jin, Chao

AU - Zhang, Xixiang

AU - Bai, Haili

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledged KAUST grant number(s): CRF-2015-SENSORS-2709 Acknowledgements: 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.

PY - 2019/12/9

Y1 - 2019/12/9

N2 - 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.

AB - 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.

UR - http://hdl.handle.net/10754/660918

UR - https://linkinghub.elsevier.com/retrieve/pii/S0040609019307667

UR - http://www.scopus.com/inward/record.url?scp=85076843256&partnerID=8YFLogxK

U2 - 10.1016/j.tsf.2019.137741

DO - 10.1016/j.tsf.2019.137741

M3 - Article

SN - 0040-6090

VL - 695

SP - 137741

JO - Thin Solid Films

JF - Thin Solid Films

ER -

Strain control of phase transition and magnetic property in multiferroic BiFeO3 thin films

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