Anantharaman, M R; Jagatheesan, S; Malini, K A; Sindhu, S; Narayanasamy, A; Chinnasamy, C N; Jacobs, J B; Reijne, S; Seshan, K; Smits, R H H; Brongersma, H H(Elsevier, April 14, 1998)
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Abstract:
Zinc ferrite belongs to the class of normal spinels where it is assumed to have a cation distribution of
Zn2`(Fe3`)2(O2~)4, and it is purported to be showing zero net magnetisation. However, there have been recent reports
suggesting that zinc ferrite exhibits anomaly in its magnetisation. Zinc ferrite samples have been prepared by two
di¤erent routes and have been analysed using low energy ion scattering, Mo¬ ssbauer spectroscopy and magnetic
measurements. The results indicate that zinc occupies octahedral sites, contrary to the earlier belief that zinc occupies
only the tetrahedral sites in a normal spinel. The amount of zinc on the B site increases with decrease in particle size. The
LEIS results together with the Mo¬ ssbauer results and the magnetic measurements lead to the conclusion that zinc
occupies the B site and the magnetisation exhibited by ultraÞne particles of zinc is due to short range ordering
Description:
Journal of Magnetism and Magnetic Materials 189 (1998) 83-88