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Journal of NanomaterialsVolume 2011 2011, Article ID 797639, 6 pages

Research Article

Department of Applied Physics, Materials Research Center, The Hong Kong Polytechnic University, Kowloon, Hong Kong

Key Laboratory of Ferro- & Piezoelectric Materials and Device of Hubei Province, Faculty of Physics and Electronic Technology, Hubei University, Wuhan 430062, China

Received 28 March 2010; Accepted 21 July 2010

Academic Editor: Jaetae Seo

Copyright © 2011 Yongming Hu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Nanoparticles NPs of multiferroic bismuth ferrite BiFe with narrow size distributions were synthesized via a wet chemical route using bismuth nitrate and iron nitrate as starting materials and excess tartaric acid and citric acid as chelating agent, respectively, followed by thermal treatment. It was found that BiFe NPs crystallized at 350 when using citric acid as chelating agent. Such crystallization temperature is much lower than that of conventional chemical process in which other types of chelating agent are used. BiFe NPs with different sizes distributions show obvious ferromagnetic properties, and the magnetization is increased with reducing the particle size.





Autor: Yongming Hu, Linfeng Fei, Yiling Zhang, Jikang Yuan, Yu Wang, and Haoshuang Gu

Fuente: https://www.hindawi.com/



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