Structural characterization of epitaxial multiferroic BiFeO3 films grown on SrTiO3 (100) substrates by crystallizing amorphous Bi-Fe-Ox

Hiroshi Naganuma; Takamichi Miyazaki; Akihiko Ukachi; Mikihiko Oogane; Shigemi Mizukami; Yasuo Ando

doi:10.2109/jcersj2.118.648

Structural characterization of epitaxial multiferroic BiFeO₃ films grown on SrTiO₃ (100) substrates by crystallizing amorphous Bi-Fe-O_x

Hiroshi Naganuma, Takamichi Miyazaki, Akihiko Ukachi, Mikihiko Oogane, Shigemi Mizukami, Yasuo Ando

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

2 Citations (Scopus)

Abstract

Amorphous Bi-Fe-O_x films prepared on SrTiO₃ (100) substrates using a conventional r. f. magnetron sputtering system were crystallized by post-annealing at 873K in an atmosphere. Microstructural observations by X-ray diffraction and cross-sectional transmission electron microscopy revealed that the crystallized Bi-Fe-O_x films were well-epitaxially BiFeO₃ fabricated without interfacial layer although as-prepared film was amorphous structure with excess Bi. The crystallized BiFeO₃ films have fairly epitaxial compatibly ([001](001)BiFeO ₃//[001](001)SrTiO₃). These results indicate that (1) BiFeO₃ has good epitaxial compatibility with SrTiO₃ and (2) crystallizing amorphous Bi-Fe-O_x is one possible method that can be used to fabricate high-quality multiferroic barriers for tunnel junctions.

Original language	English
Pages (from-to)	648-651
Number of pages	4
Journal	Journal of the Ceramic Society of Japan
Volume	118
Issue number	1380
DOIs	https://doi.org/10.2109/jcersj2.118.648
Publication status	Published - 2010 Aug

Keywords

BiFeO
Epitaxial film
Multiferroics
SrTiO
Transmission electron microscopy (TEM)

ASJC Scopus subject areas

Ceramics and Composites
Chemistry(all)
Condensed Matter Physics
Materials Chemistry

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Structural characterization of epitaxial multiferroic BiFeO₃ films grown on SrTiO₃ (100) substrates by crystallizing amorphous Bi-Fe-O_x. / Naganuma, Hiroshi; Miyazaki, Takamichi; Ukachi, Akihiko; Oogane, Mikihiko ; Mizukami, Shigemi ; Ando, Yasuo.

In: Journal of the Ceramic Society of Japan, Vol. 118, No. 1380, 08.2010, p. 648-651.

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

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title = "Structural characterization of epitaxial multiferroic BiFeO3 films grown on SrTiO3 (100) substrates by crystallizing amorphous Bi-Fe-Ox",

abstract = "Amorphous Bi-Fe-Ox films prepared on SrTiO3 (100) substrates using a conventional r. f. magnetron sputtering system were crystallized by post-annealing at 873K in an atmosphere. Microstructural observations by X-ray diffraction and cross-sectional transmission electron microscopy revealed that the crystallized Bi-Fe-Ox films were well-epitaxially BiFeO3 fabricated without interfacial layer although as-prepared film was amorphous structure with excess Bi. The crystallized BiFeO3 films have fairly epitaxial compatibly ([001](001)BiFeO 3//[001](001)SrTiO3). These results indicate that (1) BiFeO3 has good epitaxial compatibility with SrTiO3 and (2) crystallizing amorphous Bi-Fe-Ox is one possible method that can be used to fabricate high-quality multiferroic barriers for tunnel junctions.",

keywords = "BiFeO, Epitaxial film, Multiferroics, SrTiO, Transmission electron microscopy (TEM)",

author = "Hiroshi Naganuma and Takamichi Miyazaki and Akihiko Ukachi and Mikihiko Oogane and Shigemi Mizukami and Yasuo Ando",

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AU - Naganuma, Hiroshi

AU - Miyazaki, Takamichi

AU - Ukachi, Akihiko

AU - Oogane, Mikihiko

AU - Mizukami, Shigemi

AU - Ando, Yasuo

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N2 - Amorphous Bi-Fe-Ox films prepared on SrTiO3 (100) substrates using a conventional r. f. magnetron sputtering system were crystallized by post-annealing at 873K in an atmosphere. Microstructural observations by X-ray diffraction and cross-sectional transmission electron microscopy revealed that the crystallized Bi-Fe-Ox films were well-epitaxially BiFeO3 fabricated without interfacial layer although as-prepared film was amorphous structure with excess Bi. The crystallized BiFeO3 films have fairly epitaxial compatibly ([001](001)BiFeO 3//[001](001)SrTiO3). These results indicate that (1) BiFeO3 has good epitaxial compatibility with SrTiO3 and (2) crystallizing amorphous Bi-Fe-Ox is one possible method that can be used to fabricate high-quality multiferroic barriers for tunnel junctions.

AB - Amorphous Bi-Fe-Ox films prepared on SrTiO3 (100) substrates using a conventional r. f. magnetron sputtering system were crystallized by post-annealing at 873K in an atmosphere. Microstructural observations by X-ray diffraction and cross-sectional transmission electron microscopy revealed that the crystallized Bi-Fe-Ox films were well-epitaxially BiFeO3 fabricated without interfacial layer although as-prepared film was amorphous structure with excess Bi. The crystallized BiFeO3 films have fairly epitaxial compatibly ([001](001)BiFeO 3//[001](001)SrTiO3). These results indicate that (1) BiFeO3 has good epitaxial compatibility with SrTiO3 and (2) crystallizing amorphous Bi-Fe-Ox is one possible method that can be used to fabricate high-quality multiferroic barriers for tunnel junctions.

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KW - SrTiO

KW - Transmission electron microscopy (TEM)

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