Document Type

Article

Publication Date

4-1991

DOI

10.1063/1.348026

Publication Title

Journal of Applied Physics

Volume

69

Issue

8

Pages

5352–5354

Conference Name

35th Annual Conference on Magnetism and Magnetic Materials, San Diego, California (USA), 29 Oct−1 Nov 1990

Abstract

The Mössbauer effect has been used to study the microscopic magnetic properties of the cubic microwave ferrite (Zn0.41Ni0.59)Fe2O4 at 300 K. The magnetically split spectrum is broad and unresolved due to the overlap of the hyperfine magnetic fields at the tetrahedral and octahedral sites. This is caused by a distribution of magnetic fields at each site. The distribution is especially large and asymmetric at the octahedral site and is due to the fact that the iron atoms at this site are influenced by the presence of both iron and zinc at the tetrahedral site. The octahedral site is more sensitive to changes in the number of zinc neighbors than is the tetrahedral site. Assuming a random distribution of the zinc at the tetrahedral site, and knowing the fraction of zinc in the ferrite, the binomial distribution has been used to calculate the expected magnetic‐field distribution at the octahedral site as a function of the number of zinc neighbors. These figures have been compared with the magnetic‐field distribution profile determined from the fit to the Mössbauer spectrum. Sufficiently good agreement has been found to allow us to isolate the magnetic‐field contribution due to most of the different numbers, between zero and six, of neighboring zinc atoms.

Rights

"Under the terms of its License to Publish Agreement, AIP Publishing grants the Author(s) of papers submitted to or published in one of AIP Publishing journals or conference proceedings the following rights: The right to Deposit the VOR in a repository in compliance with university or funder requirements 12 months after publication by AIP Publishing."

© American Institute of Physics

Included with kind permission from the author(s).

Original Publication Citation

Dooling, T. A., & Cook, D. C. (1991). Magnetic‐field distributions in zinc‐nickel ferrite. Journal of Applied Physics, 69(8), 5352-5354. https://doi.org/10.1063/1.348026

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