Exchange biases of Co, Py, Co40Fe40B20, Co75Fe25, and Co50Fe50 on epitaxial BiFeO3 films prepared by chemical solution deposition

Hiroshi Naganuma; Mikihiko Oogane; Yasuo Ando

doi:10.1063/1.3563061

Exchange biases of Co, Py, Co₄₀Fe₄₀B₂₀, Co₇₅Fe₂₅, and Co₅₀Fe₅₀ on epitaxial BiFeO₃ films prepared by chemical solution deposition

Hiroshi Naganuma, Mikihiko Oogane, Yasuo Ando

ENG - Applied Physics

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

23 Citations (Scopus)

Abstract

Multiferroic BiFeO₃ epitaxial films were fabricated on SrTiO₃ (100) substrates by a chemical solution deposition method. Magnetic layers of Co, Py, Co₄₀Fe₄₀B₂₀, Co ₇₅Fe₂₅, and Co₅₀Fe₅₀ were then deposited by sputtering under a magnetic field. Despite employing a chemical process, a clear exchange bias was observed for all the magnetic materials. The temperature dependence of H_ex was evaluated for a Co ₅₀Fe₅₀/BiFeO₃ bilayer having a relatively large H_ex and high squareness. The H_ex of Co ₅₀Fe₅₀/BiFeO₃ bilayer increased between 10 to 250 K.

Original language	English
Article number	07D736
Journal	Journal of Applied Physics
Volume	109
Issue number	7
DOIs	https://doi.org/10.1063/1.3563061
Publication status	Published - 2011 Apr 1

ASJC Scopus subject areas

Physics and Astronomy(all)

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title = "Exchange biases of Co, Py, Co40Fe40B20, Co75Fe25, and Co50Fe50 on epitaxial BiFeO3 films prepared by chemical solution deposition",

abstract = "Multiferroic BiFeO3 epitaxial films were fabricated on SrTiO3 (100) substrates by a chemical solution deposition method. Magnetic layers of Co, Py, Co40Fe40B20, Co 75Fe25, and Co50Fe50 were then deposited by sputtering under a magnetic field. Despite employing a chemical process, a clear exchange bias was observed for all the magnetic materials. The temperature dependence of Hex was evaluated for a Co 50Fe50/BiFeO3 bilayer having a relatively large Hex and high squareness. The Hex of Co 50Fe50/BiFeO3 bilayer increased between 10 to 250 K.",

author = "Hiroshi Naganuma and Mikihiko Oogane and Yasuo Ando",

note = "Funding Information: We thank Professor S. Okamura for preparing the samples of the BiFeO films. This research is partly supported by the Japan Society for the Promotion of Science (JSPS) through its “Funding Program for World-Leading Innovative R&D on Science and Technology (FIRST Program)” and by the Tohoku University Exploratory Research Program for Young Scientists (TU-ERYS). 3 Copyright: Copyright 2011 Elsevier B.V., All rights reserved.",

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AU - Ando, Yasuo

N1 - Funding Information: We thank Professor S. Okamura for preparing the samples of the BiFeO films. This research is partly supported by the Japan Society for the Promotion of Science (JSPS) through its “Funding Program for World-Leading Innovative R&D on Science and Technology (FIRST Program)” and by the Tohoku University Exploratory Research Program for Young Scientists (TU-ERYS). 3 Copyright: Copyright 2011 Elsevier B.V., All rights reserved.

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AB - Multiferroic BiFeO3 epitaxial films were fabricated on SrTiO3 (100) substrates by a chemical solution deposition method. Magnetic layers of Co, Py, Co40Fe40B20, Co 75Fe25, and Co50Fe50 were then deposited by sputtering under a magnetic field. Despite employing a chemical process, a clear exchange bias was observed for all the magnetic materials. The temperature dependence of Hex was evaluated for a Co 50Fe50/BiFeO3 bilayer having a relatively large Hex and high squareness. The Hex of Co 50Fe50/BiFeO3 bilayer increased between 10 to 250 K.

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