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Title Synthesis, characterization, and magneto-electric properties of (1-x)BCZT-xCFO ceramic particulate composites
 
Names PRAVEEN, JP
REDDY, MV
KOLTE, J
KUMAR, SD
SUBRAMANIAN, V
DAS, D
Date Issued 2017 (iso8601)
Abstract Synthesis of a new magnetoelectric [(1-x)(Ba0.85Ca0.15)(Zr0.1Ti0.9)O-3-xCoFe(2)O(4)] (weight fraction x=0, 0.1, 0.2, 0.3, 0.4, 0.5 and 1) ceramic particulate composites with its structural characterization and magneto-electric properties have been reported here in this study. Lead free piezoelectric (Ba0.85Ca0.15)(Zr0.1Ti0.9)O-3 (BCZT) and ferrimagnetic CoFe2O4 (CFO) were synthesized using sol-gel and combustion methods respectively. (1-x)BCZT-xCFO magnetoelectric composites were then synthesized by mixing of the calcined individual ferroic phases with required weight fractions. Powder X-ray diffraction studies indicate the coexistence of BCZT and CFO phases in the composites sintered at 1300 degrees C. 0.5BCZT-0.5CFO composite showed high strain sensitivity (d/dH) of 52x10(-9)Oe(-1), which is comparable to that of pure CFO (50x10(-9)Oe(-1)). A high piezoelectric voltage constant (g(33)) of 8x10(-3) Vm/N was measured for 0.8BCZT-0.2CFO sample. All the composites showed magnetoelectric effect and a high magnetoelectric coupling coefficient ((ME)) of 6.85 mV/cmOe was measured for 0.5BCZT-0.5CFO composite at 1kHz and a large ME coefficient of 115 mV/cmOe at its resonance frequency. The effect of microstructure on the magnetoelectric properties of [(1-x)BCZT-(x)CFO] composites has been studied and reported here as a function of its piezoelectric (BCZT)/ferrite (CoFe2O4) content.
Genre Article
Topic LEAD-FREE CERAMICS
Identifier INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY,14(2)200-210