Title: Tuning the formation and functionalities of ultrafine CoFe2O4 nanocrystals via interfacial coherent strain
Authors: Hsieh, Ying-Hui
Kuo, Ho-Hung
Liao, Sheng-Chieh
Liu, Heng-Jui
Chen, Ying-Jiun
Lin, Hong-Ji
Chen, Chien-Te
Lai, Chih-Huang
Zhan, Qian
Chueh, Yu-Lun
Chu, Ying-Hao
Department of Materials Science and Engineering
Issue Date: 2013
Abstract: Complex oxide nanocrystals with a spinel structure show their remarkable optical, electronic, mechanical, thermal, and magnetic properties. In this study, we present a simple yet versatile strategy to grow self-assembled epitaxial CoFe2O4 nanocrystals with well-controlled size (less than 10 nm) and single orientation. CoFe2O4 nanocrystals were fabricated via phase separation in a BiFeO3-CoF2O4 ultrathin film by pulsed laser deposition. The coherent strain at the BiFeO3-CoF2O4 interface suppressed the growth of the nanocrystals regardless of substrate temperatures. This strain also resulted in the ferromagnetic anisotropy and interesting conducting behaviors of ultrafine CFO nanocrystals.
URI: http://hdl.handle.net/11536/22429
ISSN: 2040-3364
DOI: 10.1039/c3nr00413a
Volume: 5
Issue: 14
Begin Page: 6219
End Page: 6223
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