Solid-Phase Epitaxial Growth of A-Site-Ordered Perovskite Sr4-xErxCo4O12-delta: A Room Temperature Ferrimagnetic p-Type Semiconductor

Katase, Takayoshi; Takahashi, Hidefumi; Tohei, Tetsuya; Suzuki, Yuki; Yamanouchi, Michihiko; Ikuhara, Yuichi; Terasaki, Ichiro; Ohta, Hiromichi

Solid-Phase Epitaxial Growth of A-Site-Ordered Perovskite Sr4-xErxCo4O12-delta: A Room Temperature Ferrimagnetic p-Type Semiconductor

Katase, Takayoshi; Takahashi, Hidefumi; Tohei, Tetsuya et al.

Advanced electronic materials, 2015, 1(12), 1500199

Permalink : https://hdl.handle.net/2115/63699

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アクセス権	open access
URI	https://hdl.handle.net/2115/63699
タイトル	Solid-Phase Epitaxial Growth of A-Site-Ordered Perovskite Sr4-xErxCo4O12-delta: A Room Temperature Ferrimagnetic p-Type Semiconductor
著者	Katase, Takayoshi ; Takahashi, Hidefumi ; Tohei, Tetsuya ; Suzuki, Yuki ; Yamanouchi, Michihiko ; Ikuhara, Yuichi ; Terasaki, Ichiro ; Ohta, Hiromichi
著者名 Katase, Takayoshi
著者名 Takahashi, Hidefumi
著者名 Tohei, Tetsuya
著者名 Suzuki, Yuki
e-Rad_Researcher 40590899 著者名 Yamanouchi, Michihiko
著者名 Ikuhara, Yuichi
e-Rad_Researcher 30227508 著者名 Terasaki, Ichiro
e-Rad_Researcher 80372530 著者名 Ohta, Hiromichi
言語	英語
キーワード	ordered perovskite
	cobaltite
	epitaxial film
	ferrimagnetic semiconductor
発行日	2015-12
出版者	Wiley-VCH
収録物名	Advanced electronic materials
巻(号)	1(12)
ページ	1500199
抄録	The oxygen-deficient Sr4-xErxCo4O12-delta (SECO), one of the ordered perovskite oxides, is a room-temperature (RT) ferrimagnetic semiconductor that arises from the A-site-ordered structure. Development of such a material can lead to the realization of spintronic heterojunction devices; however, to this point there have been difficulties in achieving the A-site-ordered structure in SECO thin films. Here, single-crystalline film growth of SECO with perfectly aligned A-site-ordered structure on (LaAlO3)(0.3)(Sr2TaAlO6)(0.7) substrates by solid-phase epitaxy (SPE) method is demonstrated. The brownmillerite-type, A-site-disordered structure of the as-grown epitaxial film clearly changes into well-aligned A-site-ordered structure after heat treatment at 1050 degrees C in air; the aligned ordered structure in the film is clearly visualized at atomic level. This ordering induces ferrimagnetism with Curie temperature (T-c) approximate to 310 K and it is found that the SECO film with p-type semiconductivity exhibits anomalous Hall effect at the temperature up to 300 K, which is suitable for the test bench to demonstrate advanced spintronic heterojunction devices, operating at RT. The present SPE method is expected to serve as a powerful technique for the fabrication of thin films and exploration of potential characteristics of A-site-ordered perovskite oxides.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	This is the accepted version of the following article: http://onlinelibrary.wiley.com/doi/10.1002/aelm.201500199/full, which has been published in final form at Advanced electronic materials, Vol.1(12), December, 2015. This article may be used for non-commercial purposes in accordance with the Wiley Self-Archiving Policy [olabout.wiley.com/WileyCDA/Section/id-820227.html].
PISSN	2199-160X
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1002/aelm.201500199