Voltage-driven hysteretic changes in magnetization in multiferroic Co/BTO composite thin films

Li Shu; Jia Mian Hu; Yao Gao; Liang Wu; Jing Ma; Y. H. Lin; C. W. Nan

doi:10.1016/j.apsusc.2014.05.202

Voltage-driven hysteretic changes in magnetization in multiferroic Co/BTO composite thin films

Li Shu, Jia Mian Hu, Yao Gao, Liang Wu, Jing Ma, Y. H. Lin, C. W. Nan

Materials Science and Engineering

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

6 Scopus citations

Abstract

Multiferroic Co/BaTiO₃ layered composite thin films were grown on Nb-doped SrTiO₃ single crystal by pulse laser deposition, in which the polycrystalline Co film was annealed under magnetic field to induce in-plane uniaxial magnetic easy axis. Voltage-induced magnetization changes along and perpendicular to the easy axis were measured by Magneto-Optical Kerr effect (MOKE) magnetometer without applied magnetic field. These changes in magnetization could be due to magnetoelectric coupling between Co and BaTiO ₃, and to possibly electro-optical effect of BTO if the MOKE laser could penetrate the top Co film. After excluding the electro-optical interference by analyzing the experimental results within an optical model, a hysteric loop of magnetization versus voltage is identified with a relative change in magnetization of about 8%.

Original language	English (US)
Pages (from-to)	599-602
Number of pages	4
Journal	Applied Surface Science
Volume	314
DOIs	https://doi.org/10.1016/j.apsusc.2014.05.202
State	Published - Sep 30 2014

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Surfaces, Coatings and Films
Surfaces and Interfaces

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10.1016/j.apsusc.2014.05.202

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@article{bc20fedaa28a4431acc2269dfc59ed47,

title = "Voltage-driven hysteretic changes in magnetization in multiferroic Co/BTO composite thin films",

abstract = "Multiferroic Co/BaTiO3 layered composite thin films were grown on Nb-doped SrTiO3 single crystal by pulse laser deposition, in which the polycrystalline Co film was annealed under magnetic field to induce in-plane uniaxial magnetic easy axis. Voltage-induced magnetization changes along and perpendicular to the easy axis were measured by Magneto-Optical Kerr effect (MOKE) magnetometer without applied magnetic field. These changes in magnetization could be due to magnetoelectric coupling between Co and BaTiO 3, and to possibly electro-optical effect of BTO if the MOKE laser could penetrate the top Co film. After excluding the electro-optical interference by analyzing the experimental results within an optical model, a hysteric loop of magnetization versus voltage is identified with a relative change in magnetization of about 8%.",

author = "Li Shu and Hu, {Jia Mian} and Yao Gao and Liang Wu and Jing Ma and Lin, {Y. H.} and Nan, {C. W.}",

note = "Funding Information: This work was supported by the National Natural Science Foundation of China (Grant Nos. 51332001 , 11234005 and 51221291 ), and Beijing Education Committee (Grant No. 20121000301 ).",

year = "2014",

month = sep,

day = "30",

doi = "10.1016/j.apsusc.2014.05.202",

language = "English (US)",

volume = "314",

pages = "599--602",

journal = "Applied Surface Science",

issn = "0169-4332",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Voltage-driven hysteretic changes in magnetization in multiferroic Co/BTO composite thin films

AU - Shu, Li

AU - Hu, Jia Mian

AU - Gao, Yao

AU - Wu, Liang

AU - Ma, Jing

AU - Lin, Y. H.

AU - Nan, C. W.

N1 - Funding Information: This work was supported by the National Natural Science Foundation of China (Grant Nos. 51332001 , 11234005 and 51221291 ), and Beijing Education Committee (Grant No. 20121000301 ).

PY - 2014/9/30

Y1 - 2014/9/30

N2 - Multiferroic Co/BaTiO3 layered composite thin films were grown on Nb-doped SrTiO3 single crystal by pulse laser deposition, in which the polycrystalline Co film was annealed under magnetic field to induce in-plane uniaxial magnetic easy axis. Voltage-induced magnetization changes along and perpendicular to the easy axis were measured by Magneto-Optical Kerr effect (MOKE) magnetometer without applied magnetic field. These changes in magnetization could be due to magnetoelectric coupling between Co and BaTiO 3, and to possibly electro-optical effect of BTO if the MOKE laser could penetrate the top Co film. After excluding the electro-optical interference by analyzing the experimental results within an optical model, a hysteric loop of magnetization versus voltage is identified with a relative change in magnetization of about 8%.

AB - Multiferroic Co/BaTiO3 layered composite thin films were grown on Nb-doped SrTiO3 single crystal by pulse laser deposition, in which the polycrystalline Co film was annealed under magnetic field to induce in-plane uniaxial magnetic easy axis. Voltage-induced magnetization changes along and perpendicular to the easy axis were measured by Magneto-Optical Kerr effect (MOKE) magnetometer without applied magnetic field. These changes in magnetization could be due to magnetoelectric coupling between Co and BaTiO 3, and to possibly electro-optical effect of BTO if the MOKE laser could penetrate the top Co film. After excluding the electro-optical interference by analyzing the experimental results within an optical model, a hysteric loop of magnetization versus voltage is identified with a relative change in magnetization of about 8%.

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U2 - 10.1016/j.apsusc.2014.05.202

DO - 10.1016/j.apsusc.2014.05.202

M3 - Article

AN - SCOPUS:84906691725

SN - 0169-4332

VL - 314

SP - 599

EP - 602

JO - Applied Surface Science

JF - Applied Surface Science

ER -

Voltage-driven hysteretic changes in magnetization in multiferroic Co/BTO composite thin films

Abstract

All Science Journal Classification (ASJC) codes

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