Magnetoelectric coupling in γ′ -Fe4N/Pb(Mg1/3Nb2/3)0.7Ti0.3O3 multiferroic heterostructures

Zhengxun Lai; Peng Li; Wenbo Mi

doi:10.1063/1.5119002

Magnetoelectric coupling in γ′ -Fe4N/Pb(Mg1/3Nb2/3)0.7Ti0.3O3 multiferroic heterostructures

Zhengxun Lai, Peng Li, Wenbo Mi

Physical Sciences and Engineering

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

5 Scopus citations

Abstract

Epitaxial γ′-Fe4N films with different thicknesses were fabricated on Pb(Mg1/3Nb2/3)0.7Ti0.3O3 (PMN-PT) substrates by facing-target reactive sputtering. The magnetoelectric coupling (MEC) in the samples was systematically investigated. Firstly, the magnetization along different in-plane directions is tunable by the electric field. It was found that MEC in the films on PMN-PT(011) is stronger than that on PMN-PT(001) due to the different in-plane magnetic anisotropy. Moreover, the magnetoelectric coupling is strongly related to the γ′-Fe4N film thickness, which can be ascribed to the competition between the strain and spin-dependent screening effect induced MEC. Additionally, the electric-field tailored remanent magnetization of the samples gradually increases with temperature due to the thermal agitation. Besides, the electric-field effect on the out-of-plane magnetic hysteresis loops is consistent with the in-plane cases. The results are of benefit to the development of the electric-field controlled spintronic devices.

Original language	English (US)
Pages (from-to)	113901
Journal	Journal of Applied Physics
Volume	126
Issue number	11
DOIs	https://doi.org/10.1063/1.5119002
State	Published - Sep 21 2019

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https://repository.kaust.edu.sa/bitstream/10754/658619/1/1.5119002.pdf

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@article{3d8d6c6d8a3a43f68f8d4b6e4d73e4d2,

title = "Magnetoelectric coupling in γ′ -Fe4N/Pb(Mg1/3Nb2/3)0.7Ti0.3O3 multiferroic heterostructures",

abstract = "Epitaxial γ′-Fe4N films with different thicknesses were fabricated on Pb(Mg1/3Nb2/3)0.7Ti0.3O3 (PMN-PT) substrates by facing-target reactive sputtering. The magnetoelectric coupling (MEC) in the samples was systematically investigated. Firstly, the magnetization along different in-plane directions is tunable by the electric field. It was found that MEC in the films on PMN-PT(011) is stronger than that on PMN-PT(001) due to the different in-plane magnetic anisotropy. Moreover, the magnetoelectric coupling is strongly related to the γ′-Fe4N film thickness, which can be ascribed to the competition between the strain and spin-dependent screening effect induced MEC. Additionally, the electric-field tailored remanent magnetization of the samples gradually increases with temperature due to the thermal agitation. Besides, the electric-field effect on the out-of-plane magnetic hysteresis loops is consistent with the in-plane cases. The results are of benefit to the development of the electric-field controlled spintronic devices.",

author = "Zhengxun Lai and Peng Li and Wenbo Mi",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: This work is supported by the National Natural Science Foundation of China (NNSFC) (No. 51871161) and the Beijing Synchrotron Radiation Facility (1W1A, China) of the Chinese Academy of Sciences (CAS)",

year = "2019",

month = sep,

day = "21",

doi = "10.1063/1.5119002",

language = "English (US)",

volume = "126",

pages = "113901",

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issn = "0021-8979",

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T1 - Magnetoelectric coupling in γ′ -Fe4N/Pb(Mg1/3Nb2/3)0.7Ti0.3O3 multiferroic heterostructures

AU - Lai, Zhengxun

AU - Li, Peng

AU - Mi, Wenbo

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: This work is supported by the National Natural Science Foundation of China (NNSFC) (No. 51871161) and the Beijing Synchrotron Radiation Facility (1W1A, China) of the Chinese Academy of Sciences (CAS)

PY - 2019/9/21

Y1 - 2019/9/21

N2 - Epitaxial γ′-Fe4N films with different thicknesses were fabricated on Pb(Mg1/3Nb2/3)0.7Ti0.3O3 (PMN-PT) substrates by facing-target reactive sputtering. The magnetoelectric coupling (MEC) in the samples was systematically investigated. Firstly, the magnetization along different in-plane directions is tunable by the electric field. It was found that MEC in the films on PMN-PT(011) is stronger than that on PMN-PT(001) due to the different in-plane magnetic anisotropy. Moreover, the magnetoelectric coupling is strongly related to the γ′-Fe4N film thickness, which can be ascribed to the competition between the strain and spin-dependent screening effect induced MEC. Additionally, the electric-field tailored remanent magnetization of the samples gradually increases with temperature due to the thermal agitation. Besides, the electric-field effect on the out-of-plane magnetic hysteresis loops is consistent with the in-plane cases. The results are of benefit to the development of the electric-field controlled spintronic devices.

AB - Epitaxial γ′-Fe4N films with different thicknesses were fabricated on Pb(Mg1/3Nb2/3)0.7Ti0.3O3 (PMN-PT) substrates by facing-target reactive sputtering. The magnetoelectric coupling (MEC) in the samples was systematically investigated. Firstly, the magnetization along different in-plane directions is tunable by the electric field. It was found that MEC in the films on PMN-PT(011) is stronger than that on PMN-PT(001) due to the different in-plane magnetic anisotropy. Moreover, the magnetoelectric coupling is strongly related to the γ′-Fe4N film thickness, which can be ascribed to the competition between the strain and spin-dependent screening effect induced MEC. Additionally, the electric-field tailored remanent magnetization of the samples gradually increases with temperature due to the thermal agitation. Besides, the electric-field effect on the out-of-plane magnetic hysteresis loops is consistent with the in-plane cases. The results are of benefit to the development of the electric-field controlled spintronic devices.

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U2 - 10.1063/1.5119002

DO - 10.1063/1.5119002

M3 - Article

SN - 0021-8979

VL - 126

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JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 11

ER -

Magnetoelectric coupling in γ′ -Fe4N/Pb(Mg1/3Nb2/3)0.7Ti0.3O3 multiferroic heterostructures

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