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Enhanced Magnetoelectric Response and Phonon Abnormality of Self-assembled Feather-like CoFe2O4-BaTiO3 Nanostructures

Published online by Cambridge University Press:  28 May 2012

Yu Deng ,
Di Wu ,
Huiqiang Yu  and
Youwei Du
Yu Deng
Affiliation:
Physics Dept. and Nation. Lab. of Microstructures., Nanjing Univ., Nanjing, China Center for Modern Analysis, Nanjing Univ., Nanjing, China
Di Wu
Affiliation:
Physics Dept. and Nation. Lab. of Microstructures., Nanjing Univ., Nanjing, China
Huiqiang Yu
Affiliation:
Center for Modern Analysis, Nanjing Univ., Nanjing, China
Youwei Du
Affiliation:
Physics Dept. and Nation. Lab. of Microstructures., Nanjing Univ., Nanjing, China
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Abstract

Magnetoelectric (ME) (CoFe2O4)0.3-(BaTiO3)0.7 (CFO-BTO) nanostructures have been synthesized by a combinative using of hydrothermal reaction and polymer-assisted deposition. The feather-like nanostructures have an average diameter of 250nm and lengths up to 5μm, with the single-crystal CFO nanopillars embedded in the BTO matrix. The CFO-BTO nanostructures exhibit good magnetic (Ms=21.0emu/g, Mr=10.4emu/g and Hc=560.7Oe) and ferroelectric properties (Ps=10.5μC/cm2, Pr=5.6μC/cm2), as well as a large ME coefficient of 51.8mV/cmOe. A prominent phonon abnormality has also been detected between 110°C and 140°C. With emphasis on the novel microstructure, the ME response and phonon abnormality of the CFO-BTO nanostructures have been discussed.

Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1454: Symposium HH – Nanocomposites, Nanostructures and Heterostructures of Correlated Oxide Systems , 2012 , pp. 57 - 62
Copyright
Copyright © Materials Research Society 2012

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