Annealing temperature dependence of exchange bias in BiFeO 3/CoFe bilayers

T. Yu; H. Naganuma; W. X. Wang; Y. Ando; X. F. Han

doi:10.1063/1.3673435

Annealing temperature dependence of exchange bias in BiFeO ₃/CoFe bilayers

T. Yu, H. Naganuma, W. X. Wang, Y. Ando, X. F. Han

ENG - Applied Physics

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

10 Citations (Scopus)

Abstract

BiFeO ₃/CoFe bilayers with different BiFeO ₃ (BFO) crystalities were fabricated by chemical solution deposition and sputtering method. Exchange bias has been successfully induced in these bilayers by post-annealing. The annealing temperature dependence of exchange bias as well as coercivity was investigated. Two kinds of annealing temperature dependence behaviors were observed. It is found that, similar to the conventional antiferromagnet/ferromagnet system, the temperature dependence of exchange bias is dominated by direct interface coupling, and the crystality of BFO has no profound effect on exchange bias.

Original language	English
Article number	07D908
Journal	Journal of Applied Physics
Volume	111
Issue number	7
DOIs	https://doi.org/10.1063/1.3673435
Publication status	Published - 2012 Apr 1

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1063/1.3673435

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@article{cbca6278d8ff40c0ad117a1d5e19a454,

title = "Annealing temperature dependence of exchange bias in BiFeO 3/CoFe bilayers",

abstract = "BiFeO 3/CoFe bilayers with different BiFeO 3 (BFO) crystalities were fabricated by chemical solution deposition and sputtering method. Exchange bias has been successfully induced in these bilayers by post-annealing. The annealing temperature dependence of exchange bias as well as coercivity was investigated. Two kinds of annealing temperature dependence behaviors were observed. It is found that, similar to the conventional antiferromagnet/ferromagnet system, the temperature dependence of exchange bias is dominated by direct interface coupling, and the crystality of BFO has no profound effect on exchange bias.",

author = "T. Yu and H. Naganuma and Wang, {W. X.} and Y. Ando and Han, {X. F.}",

note = "Funding Information: This work was supported by the State Key Project of Fundamental Research of Ministry of Science and Technology (MOST) under Grant No. 2010CB934400, NSFC-JSPS international Joint Research Fund and National Natural Science Foundation of China (NSFC) under Grant Nos. 10934099, 10874225, and 51021061. This work was partly supported by Grant-in-Aid for challenging Exploratory Research (Grant No. 23656025) and JSPS (FIRST program). The authors are grateful to Mrs. M. Watanabe for helping with measurements. ",

year = "2012",

month = apr,

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doi = "10.1063/1.3673435",

language = "English",

volume = "111",

journal = "Journal of Applied Physics",

issn = "0021-8979",

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TY - JOUR

T1 - Annealing temperature dependence of exchange bias in BiFeO 3/CoFe bilayers

AU - Yu, T.

AU - Naganuma, H.

AU - Wang, W. X.

AU - Ando, Y.

AU - Han, X. F.

N1 - Funding Information: This work was supported by the State Key Project of Fundamental Research of Ministry of Science and Technology (MOST) under Grant No. 2010CB934400, NSFC-JSPS international Joint Research Fund and National Natural Science Foundation of China (NSFC) under Grant Nos. 10934099, 10874225, and 51021061. This work was partly supported by Grant-in-Aid for challenging Exploratory Research (Grant No. 23656025) and JSPS (FIRST program). The authors are grateful to Mrs. M. Watanabe for helping with measurements.

PY - 2012/4/1

Y1 - 2012/4/1

N2 - BiFeO 3/CoFe bilayers with different BiFeO 3 (BFO) crystalities were fabricated by chemical solution deposition and sputtering method. Exchange bias has been successfully induced in these bilayers by post-annealing. The annealing temperature dependence of exchange bias as well as coercivity was investigated. Two kinds of annealing temperature dependence behaviors were observed. It is found that, similar to the conventional antiferromagnet/ferromagnet system, the temperature dependence of exchange bias is dominated by direct interface coupling, and the crystality of BFO has no profound effect on exchange bias.

AB - BiFeO 3/CoFe bilayers with different BiFeO 3 (BFO) crystalities were fabricated by chemical solution deposition and sputtering method. Exchange bias has been successfully induced in these bilayers by post-annealing. The annealing temperature dependence of exchange bias as well as coercivity was investigated. Two kinds of annealing temperature dependence behaviors were observed. It is found that, similar to the conventional antiferromagnet/ferromagnet system, the temperature dependence of exchange bias is dominated by direct interface coupling, and the crystality of BFO has no profound effect on exchange bias.

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DO - 10.1063/1.3673435

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JF - Journal of Applied Physics

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M1 - 07D908

ER -

Annealing temperature dependence of exchange bias in BiFeO ₃/CoFe bilayers

Abstract

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