Note on the Paramagnetic Resonance of Iron in Glass

Abstract
Fe+ + + and Fe+ +ions in glass have been studied by means of paramagnetic resonance. The correlation of the Fe+ + + concentration with an intense resonance at g=4.27 shows the resonance is due to Fe+ + +. A theory is proposed explaining the observed g value and the implications for the atomic surroundings of Fe+ + + are discussed. It is also proposed that the g=6 resonance observed in glass by Sands is due to Fe+ + +.
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