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Magnetoelectric properties of lead‐free Li 0.06 K 0.47 Na 0.47 NbO 3 CoFe 2 O 4 nanocomposite films fabricated by a one‐step chemical process
Author(s) -
Cheng T. D.,
Wang G. Y.,
Wang Y.,
Tang X. G.,
Chan H. L. W.
Publication year - 2011
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201026525
Subject(s) - materials science , natural bond orbital , differential scanning calorimetry , nanocomposite , scanning electron microscope , thermogravimetry , composite number , analytical chemistry (journal) , diffraction , chemical engineering , composite material , chemistry , molecule , thermodynamics , organic chemistry , physics , optics , engineering
Lead‐free composite thin films composed of Li 0.06 K 0.47 Na 0.47 NbO 3 and CoFe 2 O 4 were prepared using a one‐step chemical method. By analysis using X‐ray diffraction, thermogravimetry (TG), and differential scanning calorimetry, it was found that the Li 0.06 K 0.47 Na 0.47 NbO 3 and CoFe 2 O 4 phases were crystallized at different stages of the thermal treatment, which resulted in the formation of a composite structure. The phase segregation was confirmed by observations on scanning electron microscopy and magnetic force microscopy. By electrical and magnetic measurements it was found that the composite showed a coupled magnetoelectric behavior at room temperature with a magnetoelectric coefficient of ∼185 mV/cm · Oe.