Gamma irradiation induced structural, electrical, magnetic and ferroelectric transformation in bismuth doped nanosized cobalt ferrite for various applications
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Abstract
Abstract The effects of gamma irradiation on the structural, dielectric, magnetic and ferroelectric behaviour of Bi doped cobalt ferrite, CoFe2-xBixO4 (x = 0, 0.05, 0.1, 0.5, 1.0) synthesized by glycine nitrate method before and after gamma irradiation have been investigated. A micro-strain is generated by the gamma irradiation as observed by the X-ray diffraction studies. The massive enhancement of dielectric constant in irradiated samples is attributed to the Maxwell–Wagner type of interfacial polarization. Complex impedance analysis indicates a predominant grain boundary contribution to the conduction mechanism. The frequency-dependent ac conductivity in the frequency range of 100 Hz – 1 MHz is increased on irradiation. Reduction in magnetisation was found in the irradiated samples. Remnant polarization and coercive field decreases with irradiation as obtained from P-E loop. Hence, the applications of these nanoferrites in the field of high frequency and magnetic recording devices can be favoured by tailoring the electrical and magnetic properties subjected to gamma irradiation.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Magnetic Properties and Synthesis of Ferrites · Multiferroics and related materials · Magneto-Optical Properties and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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