Ferroelectric and structural properties of Ba2−xSrxNaNb5O15 thin films prepared on La0.05Sr0.95TiO3 substrates | Zendy

Tohru Higuchi | Zendy; Yamasaki Taro | Zendy; Yuko Suzuki | Zendy; Keisuke Gotoh | Zendy; Takeshi Hattori | Zendy; Takeyo Tsukamoto | Zendy

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Ferroelectric and structural properties of Ba2−xSrxNaNb5O15 thin films prepared on La0.05Sr0.95TiO3 substrates

Author(s) -

Tohru Higuchi,

Yamasaki Taro,

Yuko Suzuki,

Keisuke Gotoh,

Takeshi Hattori,

Takeyo Tsukamoto

Publication year - 2008

Publication title -

journal of applied physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.699

H-Index - 319

eISSN - 1089-7550

pISSN - 0021-8979

DOI - 10.1063/1.2903072

Subject(s) - materials science , thin film , coercivity , ferroelectricity , pulsed laser deposition , substrate (aquarium) , surface roughness , polarization (electrochemistry) , analytical chemistry (journal) , optoelectronics , composite material , condensed matter physics , nanotechnology , dielectric , chemistry , oceanography , physics , chromatography , geology

The electronic structures of BiFeO{sub 3} (BF) and Mn-doped BiFeO{sub 3} (BF(Mn)) have been studied by X-ray absorption spectroscopy (XAS) and soft-X-ray emission spectroscopy (SXES). The BF and BF(Mn) have the mixed valence state of Fe{sup 2+} and Fe{sup 3+}. The valence band is mainly composed of O 2p state hybridized with the majority-spin t{sub 2g} and e{sub g} orbitals of Fe 3d state. The conduction band is composed of the minority-spin t{sub 2g} and e{sub g} orbitals of Fe 3d. The band gaps of BF and BF(Mn) are estimated to be 1.3 eV and 2.7 eV, respectively. The increase of band gap with Mn substitution contributes to the change of bandwidth of valence band

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