Paraelastisches Verhalten von S2
?-Zentren in Alkalihalogeniden |
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| Authors: | K Bachmann Dr W Känzig H R Zeller A Zimmermann |
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| Institution: | 1. Laboratorium für Festk?rperphysik, Eidgen?ssischen Technischen Hochschule, Gloriastra?e 35, CH-8006, Zürich
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| Abstract: | The reorientation of S2 ? molecule ions on anion sites in alkali halide crystals under mechanical stress has been investigated by means of electron spin resonance and optical measurements. The reorientation rate is given by an Arrhenius relation. Tunneling in the ground state of libration is unimportant contrary to the case of the O2 ? center. The stress-induced dichroism permitted identification and assignment of two optical absorption bands of the S2 ? center. |
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