Improvement of the magnetic and electric properties of Cu-Zn ferrites
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We study Cu-Zn polycrystalline ferrites substituted with rare-earth ions. For substituted samples (R = Nd, Sm, and Gd), the initial magnetic permeability and homogeneity increase as compared with nonsubstituted samples. At the same time, the magnetization and energy losses decrease for all substituted samples. The specific resistance increases only for samples with R = La and Nd. The grain sizes increase for all substituted samples (as compared with nonsubstituted) except the samples with R = La and Nd. It is shown that the Curie temperature is almost constant and does not depend on the type of substituted rare-earth ions.
KeywordsGrain Size Permeability Ferrite Electric Property Energy Loss
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- 1.A. A. Sattar and K. M. El-Shokrofy, Proc. of the 7th Internat. Conf. on Ferrites (Sept. 1996), Bordeaux, France (1996), pp. 1–245.Google Scholar
- 2.A. A. Sattar, A. H. Wafik, K. M. El-Shokrofy, and M. M. El-Tabby, Phys. Stat. Sol. (a), 171, 563 (1999).Google Scholar
- 3.A. A. Sattar and A. M. Samy, J. Mater. Sci., 37, 4499–4502 (2002).Google Scholar
- 4.S. A. Poltinnikov and H. Turkevic, Sov. Phys., Solid State, 8, 1144 (1966).Google Scholar
- 5.K. J. Standly, Oxide Magnetic Materials (1972).Google Scholar
- 6.A. A. Sattar, A. H. Wafik, and H. M. El-Sayed, J. Mater. Sci., 36, 4703 (2001).Google Scholar
- 7.A. Globus, J. Phys., 38, C1-1, Paris, Colloque (1977).Google Scholar
- 8.A. A. Sattar, A. M. Samy, R. S. El-Ezza, and A. E. Eatah, Phys. Stat. Sol. (a), 193, No.1, 86–93 (2002).Google Scholar
- 9.S. Chikazumi and H. S. Charap, Physics of Magnetism, Wiley, New York (1966).Google Scholar
- 10.N. Rezlescu, E. Rezlescu, C. Pasnicu, and M. L. Craus, J. Phys. Condens. Matter, 6, 5707 (1994).Google Scholar
- 11.Y. Yamamoto, A. Makino, and T. J. Nikaidou, Phys. IV France 7, Colloque (1997), pp. 1–121.Google Scholar