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Ferroelectric and Ferromagnetic Properties and Magnetoelectric Coupling Effect of the Ba0.8Sr0.2TiO3/CoFe2O4 Heterostructure Film by Radio-Frequency Magnetron Sputtering

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Abstract:

The Ba0.8Sr0.2TiO3/CoFe2O4 layered heterostructure film was grown on Pt/TiO2/SiO2/Si substrate by radio frequency-magnetron sputtering. X-ray diffraction shows that the heterostructure film is composed of perovskite Ba0.8Sr0.2TiO3 phase and spinel CoFe2O4 phase. The microstructures of the heterostructure film were observed by field-emission scanning electron microscope (FESEM), showing good surface morphology and clear interfaces among the Ba0.8Sr0.2TiO3 film and CoFe2O4 film and substrate. The heterostructure film simultaneously diplays distinct ferroelectricity and ferromagnetism. Moreover, an obvious direct magnetoelectric coupling effect is observed in the heterostructure film with a maximum magnetoelectric voltage coefficient of 9.4 mV/cm Oe.

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Periodical:

Advanced Materials Research (Volumes 712-715)

Pages:

262-266

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.712-715.262

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Online since:

June 2013

Authors:

Ye An Wang, Yun Bo Wang, Wei Rao, Jun Xiong Gao, Wen Li Zhou, Jun Yu

Keywords:

Ferroelectric, Ferromagnetic, Magnetoelectric Effect, Multiferroic Film, RF Magnetron Sputtering

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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