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We have prepared a composite BaTi 0.9 Zr 0.1 O 3 (BTZr) doped with Li 0.5 Fe 2.5 O 4 (LF) having chemical formulae (1- x ) BTZr + ( x ) LF ( x =0, 0.05, 0.1 and 0.15) conventional solid state reaction technique. We have sintered the grown composites at 1150 °C for 3 h. We have characterized the grown composites using XRD, FESEM, P-E loop tracer and LCR meter. The XRD measurements reveal the tetragonal nature of the composites. The morphological studies reveal that the composite exhibits dense microstructure with small pores. The P-E loops confirm that the composites exhibit remnant polarization and the coercive field increases with increasing concentration of Lithium Ferrite (LF). We have studied dielectric property of the composites by varying the temperature of the sample from 30 °C to 500 °C at 1 kHz, 10 kHz and also by varying the frequency from 1 Hz to 10 MHz at 30 °C. The dielectric property of BTZr has increased after doping LF in BTZr which reveals the enhancement of electrical properties of the grown composite. [ABSTRACT FROM AUTHOR]

Abstract: In this paper, a systematic study on the structural and magnetic properties of Co100−x Cr x alloys (0

Abstract: The effects of partial substitution of Fe by Ni in (Fe1−x Ni x )72B20Si4Nb4 (x=0.0, 0.1, 0.2, 0.3, 0.4, and 0.5) bulk metallic glasses (BMGs) on their magnetic properties were studied. It is found that the saturation polarization decreases from 1.15T to 0.69T with increasing Ni content from x=0.0 to x=0.5; the Curie temperature reaches its maximum of 598K for composition x=0.1, and is then followed by a quick decrease with higher Ni content. Moreover, the random anisotropy and mean field theory were developed to investigate the magnetic properties of these BMGs, and the variations of saturation polarization and Curie temperature were well explained by calculating the magnetic exchange stiffness constant A and the nearest neighbor transition-metal-pair exchange interactions J by using the model. [Copyright &y& Elsevier]