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

Access to Document

10.2109/jcersj2.118.648

Cite this

@article{2665951d191c43f982bfee74ae322e0b,

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",

year = "2010",

month = aug,

doi = "10.2109/jcersj2.118.648",

language = "English",

volume = "118",

pages = "648--651",

journal = "Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan",

issn = "1882-0743",

publisher = "Ceramic Society of Japan/Nippon Seramikkusu Kyokai",

number = "1380",

}

TY - JOUR

T1 - Structural characterization of epitaxial multiferroic BiFeO3 films grown on SrTiO3 (100) substrates by crystallizing amorphous Bi-Fe-Ox

AU - Naganuma, Hiroshi

AU - Miyazaki, Takamichi

AU - Ukachi, Akihiko

AU - Oogane, Mikihiko

AU - Mizukami, Shigemi

AU - Ando, Yasuo

PY - 2010/8

Y1 - 2010/8

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.

KW - BiFeO

KW - Epitaxial film

KW - Multiferroics

KW - SrTiO

KW - Transmission electron microscopy (TEM)

UR - http://www.scopus.com/inward/record.url?scp=77956902579&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77956902579&partnerID=8YFLogxK

U2 - 10.2109/jcersj2.118.648

DO - 10.2109/jcersj2.118.648

M3 - Article

AN - SCOPUS:77956902579

VL - 118

SP - 648

EP - 651

JO - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan

JF - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan

SN - 1882-0743

IS - 1380

ER -