Electron paramagnetic resonance of Mn<SUP>2±</SUP> in K<SUB>2</SUB>SO<SUB>4</SUB> single crystal
- Chowdari, B. V. R.
- Venkateswarlu, Putcha
DOIAbstract
The paramagnetic resonance spectrum of divalent manganese ion in single crystals of potassium sulfate is described in detail over a large temperature range. Mn<SUP>2±</SUP> is found to substitute for K<SUP>±</SUP> and becomes associated with first-, second-, and third-neighbor potassium ion vacancies. The different spectra obtained at room temperature have been analyzed. Variation in the fine-structure spread with temperature has been studied for one of these spectra and the variation indicates a probable phase change at about −130<SUP>°</SUP> C. This was supported by the observation that some of the resonance lines appear to begin to split into two as the temperature is lowered below −130<SUP>°</SUP>C
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