Cation distribution of LiTi mixed ferrites (abstract)M. Bhagavantha Reddy and P. Venugopal Reddy Citation: Journal of Applied Physics 75, 6125 (1994); doi: 10.1063/1.355483 View online: http://dx.doi.org/10.1063/1.355483 View Table of Contents: http://scitation.aip.org/content/aip/journal/jap/75/10?ver=pdfcov Published by the AIP Publishing Articles you may be interested in Cation distribution in nanosized Ni–Zn ferrites J. Appl. Phys. 95, 5746 (2004); 10.1063/1.1699501 Cation distribution and intrinsic magnetic properties of CoTidoped Mtype barium ferrite J. Appl. Phys. 70, 1614 (1991); 10.1063/1.349526 Magnetic properties and ferromagnetic resonance of LiMgTi microwave ferrite systems (abstract) J. Appl. Phys. 64, 5831 (1988); 10.1063/1.342221 Dielectric and magnetic properties of polycrystalline cobaltsubstituted LiTi ferrites J. Appl. Phys. 63, 3780 (1988); 10.1063/1.340638 Cation Distributions in Nonstoichiometric Magnesium Ferrite J. Chem. Phys. 39, 435 (1963); 10.1063/1.1734267

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Cation distribution of Li-Ti mixed ferrites (abstract) M. Bhagavantha Reddy and P. Venugopal Reddy Deprirtrnent of I%.ysics, Post-Graduate Centre, A. V College @Arts, Science & Commerce, Gagnn Mahul, Ifvderuhad, Andhra Pradesh, India

Lithium-titanium mixed ferrites of different compositions have been prepared by the well known ceramic technique. Therm0 power studies of these samples, after usual characterization by x-ray diffraction &XRD), bulk density, porosity, etc. have been measured by the differential method. Room temperature values of the Seebeck coefficient are found to vary from 2.3 to 114 pV/K. It is an established fact that the therm0 power measurement would also be used to study the cation distributions on octahedral and tetrahedral sublattices of fe.rro spinel. This technique was successfully used in the study of cation distribution of Fe304, Fe304-TiFe204, etc. As such the cation distribution of Li-Ti mixed ferrites of PI. has been arrived at using thermo-power data by assuming that small polorans rather than electrons/holes are responsible for the process of conduction. A knowledge of cation distribution among octahedral sites of a spine1 ferrite is essential to understand the mechanism responsible for electrical properties like electrical conductivity, therm0 power, dielectric properties, etc. Saturation magnetization of all the samples has also been obtained by the well known oscillation method. From the cation distribution it has been observed that the concentration of Ti”+ on octahedral sites is found to increase while those of Fe”’ and Fc? are found to decrease rapidly.

J, Appl. Phys. 75 (IO), 15 May 1994 0021-8979/94/75(10)/5125/1/$6.00 0 1994 American Institute of Physics 6125 [This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to ] IP:

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