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Paramagnetic resonance study of cation vacancy-Mn2+ pairs in sodium azide

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Zeitschrift für Physik B Condensed Matter

Abstract

The electron paramagnetic resonance (EPR) of Mn2+ in the trigonal phase of sodium azide (NaN3) has been studied between 30 and 290°C. The observed EPR spectra can be attributed to pair states consisting of a Mn2+ ion, substitutionally on a sodium ion site, and a sodium ion vacancy bound on a nearest neighbor (nn) or a next nearest neighbor (nnn) site. The nnn pair is more stable than the nn pair by about 0.03 eV. Temperature dependent linewidths indicate that a bound vacancy performs a thermal jump motion predominantly on either nn or nnn sites around the Mn2+ ion. The respective jump rates are τ −1nn =8·1014s−·exp(−0.41 eV/kT) and τ −1nn =1.6·1013s−1.

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  1. Institut für Angewandte Physik der Universität, Albert-Überle-Strasse 3-5, D-6900, Heidelberg, Federal Republic of Germany

    Werner W. Schmidt

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  1. Werner W. Schmidt
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Schmidt, W.W. Paramagnetic resonance study of cation vacancy-Mn2+ pairs in sodium azide. Z. Physik B - Condensed Matter 46, 17–21 (1982). https://doi.org/10.1007/BF01640348

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  • DOI: https://doi.org/10.1007/BF01640348

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