Annealing temperature dependences of ferroelectric and magnetic properties in polycrystalline co-substituted BiFeO3 films

Hiroshi Naganuma; Jun Miura; Mitsumasa Nakajima; Hiromi Shima; Soichiro Okamura; Shintaro Yasui; Hiroshi Funakubo; Ken Nishida; Takashi Iijima; Masaki Azuma; Yasuo Ando; Kenji Kamishima; Koichi Kakizaki; Nobuyuki Hiratsuka

doi:10.1143/JJAP.47.7574

Annealing temperature dependences of ferroelectric and magnetic properties in polycrystalline co-substituted BiFeO₃ films

Hiroshi Naganuma, Jun Miura, Mitsumasa Nakajima, Hiromi Shima, Soichiro Okamura, Shintaro Yasui, Hiroshi Funakubo, Ken Nishida, Takashi Iijima, Masaki Azuma, Yasuo Ando, Kenji Kamishima, Koichi Kakizaki, Nobuyuki Hiratsuka

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

17 Citations (Scopus)

Abstract

Multiferroic Co-substituted BiFeO₃ films were fabricated by chemical solution deposition method followed by post deposition annealing at various temperatures. The substitution of cobalt of B-sites for iron in BiFeO₃ was promoted at relatively high temperatures. The B-site substitution by cobalt promoted increases in saturation magnetization and spontaneous magnetization. By substitution, leakage current density was suppressed in a high-electric-field region, and ferroelectric hysteresis (P-E) loops became measurable even at room temperature. The optimal annealing temperature for the coexistence of a high remanent polarization and a high remanent magnetization was 923 K having a high B-site substitution ratio of cobalt.

Original language	English
Pages (from-to)	7574-7578
Number of pages	5
Journal	Japanese journal of applied physics
Volume	47
Issue number	9 PART 2
DOIs	https://doi.org/10.1143/JJAP.47.7574
Publication status	Published - 2008 Sept 19

Keywords

B-site substitution
Cobalt
Leakage current
Multiferroics
Polycrystalline BiFeO films
Spontaneous magnetization

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

Access to Document

10.1143/JJAP.47.7574

Cite this

Naganuma, H., Miura, J., Nakajima, M., Shima, H., Okamura, S., Yasui, S., Funakubo, H., Nishida, K., Iijima, T., Azuma, M., Ando, Y., Kamishima, K., Kakizaki, K., & Hiratsuka, N. (2008). Annealing temperature dependences of ferroelectric and magnetic properties in polycrystalline co-substituted BiFeO₃ films. Japanese journal of applied physics, 47(9 PART 2), 7574-7578. https://doi.org/10.1143/JJAP.47.7574

Naganuma, H, Miura, J, Nakajima, M, Shima, H, Okamura, S, Yasui, S, Funakubo, H, Nishida, K, Iijima, T, Azuma, M, Ando, Y, Kamishima, K, Kakizaki, K & Hiratsuka, N 2008, 'Annealing temperature dependences of ferroelectric and magnetic properties in polycrystalline co-substituted BiFeO₃ films', Japanese journal of applied physics, vol. 47, no. 9 PART 2, pp. 7574-7578. https://doi.org/10.1143/JJAP.47.7574

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abstract = "Multiferroic Co-substituted BiFeO3 films were fabricated by chemical solution deposition method followed by post deposition annealing at various temperatures. The substitution of cobalt of B-sites for iron in BiFeO3 was promoted at relatively high temperatures. The B-site substitution by cobalt promoted increases in saturation magnetization and spontaneous magnetization. By substitution, leakage current density was suppressed in a high-electric-field region, and ferroelectric hysteresis (P-E) loops became measurable even at room temperature. The optimal annealing temperature for the coexistence of a high remanent polarization and a high remanent magnetization was 923 K having a high B-site substitution ratio of cobalt.",

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author = "Hiroshi Naganuma and Jun Miura and Mitsumasa Nakajima and Hiromi Shima and Soichiro Okamura and Shintaro Yasui and Hiroshi Funakubo and Ken Nishida and Takashi Iijima and Masaki Azuma and Yasuo Ando and Kenji Kamishima and Koichi Kakizaki and Nobuyuki Hiratsuka",

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AU - Naganuma, Hiroshi

AU - Miura, Jun

AU - Nakajima, Mitsumasa

AU - Shima, Hiromi

AU - Okamura, Soichiro

AU - Yasui, Shintaro

AU - Funakubo, Hiroshi

AU - Nishida, Ken

AU - Iijima, Takashi

AU - Azuma, Masaki

AU - Ando, Yasuo

AU - Kamishima, Kenji

AU - Kakizaki, Koichi

AU - Hiratsuka, Nobuyuki

PY - 2008/9/19

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AB - Multiferroic Co-substituted BiFeO3 films were fabricated by chemical solution deposition method followed by post deposition annealing at various temperatures. The substitution of cobalt of B-sites for iron in BiFeO3 was promoted at relatively high temperatures. The B-site substitution by cobalt promoted increases in saturation magnetization and spontaneous magnetization. By substitution, leakage current density was suppressed in a high-electric-field region, and ferroelectric hysteresis (P-E) loops became measurable even at room temperature. The optimal annealing temperature for the coexistence of a high remanent polarization and a high remanent magnetization was 923 K having a high B-site substitution ratio of cobalt.

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KW - Cobalt

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