Electronic and local structures of BiFeO3 films

被引：19

作者：

Yoneda, Y. ^{[1
]}

Sakamoto, W. ^{[2
]}

机构：

[1] Japan Atom Energy Agcy, React Dynam Res Div, Sayo, Hyogo 6795148, Japan

[2] Nagoya Univ, EcoTopia Sci Inst, Nagoya, Aichi 4648603, Japan

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2011年 / 23卷 / 01期

关键词：

THIN-FILMS; ELECTRICAL-PROPERTIES; SOLUTION DEPOSITION; SYSTEM LUFE2O4; SPECTROSCOPY; POLARIZATION; IFEFFIT; CHARGE;

D O I：

10.1088/0953-8984/23/1/015902

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The electronic structure of BiFeO3 (BFO), BiFeO3-PbTiO3 solid solution (BFO-PT), and Mn-doped BFO-PT (BFM-PT) films fabricated by chemical solution deposition was investigated by x-ray absorption fine structure (XAFS). The BiFeO3 shows a large leakage current owing to the mixed valance state of Fe2+ and Fe3+. The BFO film has a blunt absorption edge jump indicating the charge fluctuated state of the iron ions. The BFO-PT and BFM-PT films have sharp absorption edges, and the absorption energy of these films shifted to opposite energy. The valence fluctuation of the iron ions was closely connected with the leakage current properties. The charge fluctuated BFO film showed a leaky feature, and the charge unfluctuated BFO-PT and BFM-PT films had improved leakage current properties. The valence fluctuation of the iron ions can be controlled by Mn substitution and by making solid solutions.

引用

页数：5

共 19 条

[1] Effect of Mn substitution for multiferroic BiFeO3 probed by high-resolution soft-X-ray spectroscopy [J].

Higuchi, Tohru ;

Hattori, Takeshi ;

Sakamoto, Wataru ;

Itoh, Naoyuki ;

Shimura, Tetsuo ;

Yogo, Toshinobu ;

Yao, Peng ;

Liu, Yi-Sheng ;

Glans, Per-Anders ;

Chang, Chinglin ;

Wu, Ziyu ;

Guo, Jinghua .

JAPANESE JOURNAL OF APPLIED PHYSICS, 2008, 47 (09) :7570-7573

[2] Ferroelectricity from iron valence ordering in the charge-frustrated system LuFe2O4 [J].

Ikeda, N ;

Ohsumi, H ;

Ohwada, K ;

Ishii, K ;

Inami, T ;

Kakurai, K ;

Murakami, Y ;

Yoshii, K ;

Mori, S ;

Horibe, Y ;

Kitô, H .

NATURE, 2005, 436 (7054) :1136-1138

[3] Fabrication and characterization of BiFeO3-BaTiO3 ceramics by solid state reaction [J].

Itoh, Naoyuki ;

Shimura, Tetsuo ;

Sakamoto, Wataru ;

Yogo, Toshinobu .

FERROELECTRICS, 2007, 356 :311-315

[4] Dramatically enhanced polarization in (001), (101), and (111) BiFeO3 thin films due to epitiaxial-induced transitions [J].

Li, JF ;

Wang, JL ;

Wuttig, M ;

Ramesh, R ;

Wang, N ;

Ruette, B ;

Pyatakov, AP ;

Zvezdin, AK ;

Viehland, D .

APPLIED PHYSICS LETTERS, 2004, 84 (25) :5261-5263

[5] Direct observation of the pressure-induced charge redistribution in BiNiO3 by x-ray absorption spectroscopy [J].

Mizumaki, Masaichiro ;

Ishimatsu, Naoki ;

Kawamura, Naomi ;

Azuma, Masaki ;

Shimakawa, Yuichi ;

Takano, Mikio ;

Uozumi, Takayuki .

PHYSICAL REVIEW B, 2009, 80 (23)

[6] IFEFFIT: interactive XAFS analysis and FEFF fitting [J].

Newville, M .

JOURNAL OF SYNCHROTRON RADIATION, 2001, 8 (02) :322-324

[7] ATHENA, ARTEMIS, HEPHAESTUS:: data analysis for X-ray absorption spectroscopy using IFEFFIT [J].

Ravel, B ;

Newville, M .

JOURNAL OF SYNCHROTRON RADIATION, 2005, 12 :537-541

[8] Synthesis and characterization of BiFeO3-PbTiO3 thin films through metalorganic precursor solution [J].

Sakamoto, Wataru ;

Yamazaki, Hiroshi ;

Iwata, Asaki ;

Shimura, Tetsuo ;

Yogo, Toshinobu .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 2006, 45 (9B) :7315-7320

[9] Room temperature ferroelectric properties of Mn-substituted BiFeO3 thin films deposited on Pt electrodes using chemical solution deposition [J].

Singh, S. K. ;

Ishiwara, H. ;

Maruyama, K. .

APPLIED PHYSICS LETTERS, 2006, 88 (26)

[10] Doping effect of rare-earth ions on electrical properties of BiFeO3 thin films fabricated by chemical solution deposition [J].

Singh, SK ;

Ishiwara, H .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 2006, 45 (4B) :3194-3197

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