-, Dipti and Juneja, J. K. and Singh, Sangeeta and Raina, K. K. and Kotnala, R. K. and Prakash, Chandra (2015) Structural, Dielectric and Magnetoelectric Properties of x Co0.8Ni0.2 Fe2O4 + (1-x) PbZr0.55Ti0.45O3 Composites. Ferroelectrics Letters Section, 42 (4-6). 97-106. ISSN 0731-5171

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In this paper, we are reporting structural, dielectric, ferroelectric and magnetic properties of polycrystalline composites (ferrite and ferroelectric) of PZT (PbZr0.55Ti0.45O3) + CNFO (Co0.8Ni0.2Fe2O4). The sample with composition x CNFO + (1-x) PZT (x = 0.00, 0.05, 0.10, 0.15 and 1.00) were prepared using the solid state double sintering method. Here the ratio x: (1-x) of two components is by weight. X-ray diffraction (XRD) studies show that lattice constant and tetragonality decreases with increasing ferrite content. Dielectric constant was found to decrease with increase in amount of CNFO. The value of tangent loss (tan) was reasonably low (< 0.04) for all the samples. Ferroelectric and ferrimagnetic behavior was confirmed by observing P-E and M-H hysteresis loop, respectively. The room temperature magnetoelectric coupling coefficient ( = dE/dH) was measured as a function of applied DC magnetic field. The value of was observed to be maximum (855 V/(cm.Oe)) at DC magnetic field of 1.7 kOe for sample with 5% CNFO. Value of piezoelectric coefficient d(33)' decreases from 133 to 60 pC/N.

Item Type: Article
Uncontrolled Keywords: Ferroelectrics; magnetoelectrics; ferrites; PZT; ME effect
Subjects: Applied Physics/Condensed Matter
Depositing User: Dr. Rajpal Walke
Date Deposited: 13 Oct 2016 07:47
Last Modified: 13 Oct 2016 07:47
URI: http://npl.csircentral.net/id/eprint/1999

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