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CoFe 2 O 4 /BaTiO 3 Composites via Spark Plasma Sintering with Enhanced Magnetoelectric Coupling and Excellent Anisotropy
Author(s) -
Liu Yang,
Ruan Xuefeng,
Zhu Benpeng,
Chen Shi,
Lu Zhihong,
Shi Jing,
Xiong Rui
Publication year - 2011
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2011.04582.x
Subject(s) - spark plasma sintering , materials science , composite material , anisotropy , coupling (piping) , spark (programming language) , plasma , sintering , optics , physics , computer science , programming language , quantum mechanics
Magnetoelectric (ME) ceramic composites of CoFe 2 O 4 (CFO) and BaTiO 3 (BTO) were prepared by spark plasma sintering. The CFO/BTO ceramic composites with fine microstructures exhibited a significant improvement in the ME voltage coefficient reaching up to 0.18 V/cm Oe. A perfect ME anisotropy was also observed in the CFO/BTO ceramic composites which consisted well with the fitted curve. The enhanced ME voltage coefficient alone with the perfect ME anisotropy in these ceramic composites provides a possibility of developing a magnetic field sensor capable of probing the strength as well as the direction of an unknown magnetic vector.