Mössbauer Faraday Effect

Abstract

The dispersion associated with Mössbauer resonance absorption has been analyzed. Special attention is given to the problem of the rotation of linearly polarized recoil-free 14.4-keV $\gamma$ rays transmitted through a resonantly absorbing material (transmitter) with longitudinal applied field (nuclear Faraday effect). A simple zero-velocity Mössbauer polarimeter and its operation are described. It has been used to measure the Faraday effect in the ferrimagnetic spinel Mg${\mathrm{Fe}}_2$ ${\mathrm{O}}_4$.