1997•Journal of MagneticsRequires access

A Study of Co, Ni, Mn, and Al Containing Goethites by Mossbauer Spectroscopy

Eng Chan Kim, Hyeun Gook Hwang, Yong Soon Hwang, Jung Gi Kim, Vladimir I. Nikolaev

Abstract

To determine whether there is an ionic substitution of Ni, Co, Mn, and Al for Fe in synthetic goethites these materials have been studied by Mossbauer spectroscopy at various temperatures ranging from 77 to 400 K. It is found that the presence of substituting elements in magnetically ordered structure of crystals may change the shape of Mossbauer spectra of these materials. The approximate distribution function of the effective magnetic field in the Fe nucleus p(Hn) is obtained from the Mossbauer spectra. It is noted that the mean value of p(Hn) and its integral width can be taken as a measure of substitution in goethites.

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Key concepts: Mössbauer spectroscopy, Materials science, Spectroscopy, Ionic bonding, Mössbauer effect, Spectral line, Nuclear magnetic resonance, Analytical Chemistry (journal)