X-Ray and Bulk Magnetic Properties of the NiZn Ferrite System

Autor: S.S. Kakatkar, S. V. Kakatkar, S.S. Suryavanshi, D.N. Bhosale, S. R. Sawant, Rajendra S. Patil, A. M. Sankpal
Rok vydání: 1996
Předmět:
Zdroj: physica status solidi (b). 198:853-860
ISSN: 1521-3951
0370-1972
Popis: Compositions having the general formula Ni 1-x Zn x Fe 2 O 4 with x = 0.30, 0.35, 0.40, 0.45 have been sintered at 1100, 1150, 1200, and 1240 °C to attain different microstructures. The grain size D for a particular composition increases linearly with increasing sintering temperature. The lattice parameter a and magnetization M 8 are seen to be invariant with the change in sintering temperature. The coercive force H c and the remanent ratio R = M x /M 8 are seen to depend on the sintering temperature and hence on D. a and 8 S are found to increase with the increase of the Zn content, whereas H c values show a decreasing trend with the Zn content. The compositional, thermal, and microstructural variation of hysteresis parameters like M 8 , H c , and R = M r /M 8 reveal that magnetic grains in the compositions investigated are of multi-domain type. This result is supported by ac susceptibility data.
Databáze: OpenAIRE
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