Mossbauer study of nanomagnetics

V. I. Bachurin; I. N. Zakharova; M. A. Shipilin; A. M. Shipilin

doi:10.1117/12.854768

26 February 2010 Mossbauer study of nanomagnetics

V. I. Bachurin, I. N. Zakharova, M. A. Shipilin, A. M. Shipilin

Proceedings Volume 7521, International Conference on Micro- and Nano-Electronics 2009; 75210Q (2010) https://doi.org/10.1117/12.854768
Event: International Conference on Micro- and Nano-Electronics 2009, 2009, Zvenigorod, Russian Federation

Abstract

The interest to nanomagnetic substances is caused by their abundance in natural materials and by their application in different fields of technology particularly the use of magnetic anisotropy is of interest for the microelectromechanical systems obtained by filling microcapillaries with magnetic fluids composed of nanoparticles. Nanoscale particles differ from massive particles by their magnetic properties. The bulk of "surface area" is comparable with the bulk of a whole particle it is the distinguishing feature of nanoparticles. At the same time magnetic properties of "surface area" can greatly differ from "internal area" properties and their contribution to the whole magnetic properties of the particle should be viewed separately. Massive and nanodispersed powders of maghemite (γ-Fe₂0₃ magnetic oxide) and the similar powders of magnetite (Fe₃O₄ magnetic oxide) and magnetic fluid on the base of nanodispersed magnetite have been studied by means of Mossbauer spectroscopy. The average size and composition of nanoparticles were evaluated. The distribution functions of effective magnetic fields on the nuclei were obtained and on their basis the magnetic properties of "surface" and "internal" areas were analyzed.

Citation Download Citation

V. I. Bachurin, I. N. Zakharova, M. A. Shipilin, and A. M. Shipilin "Mossbauer study of nanomagnetics", Proc. SPIE 7521, International Conference on Micro- and Nano-Electronics 2009, 75210Q (26 February 2010); https://doi.org/10.1117/12.854768

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