EPR investigation on exchange coupled Mn2+ pairs in (CH3)4NCdCl3 |
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| Authors: | M Heming G Lehmann H Mosebach E Siegel |
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| Institution: | Institut für Physikalische Chemie, Universität Münster, Schloβplatz 4, D-4400 Münster, Federal Republic of Germany;Institut für Angewandte Physik, Universität Bonn, Wegelerstr. 8, D-5300 Bonn 1, Federal Republic of Germany |
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| Abstract: | EPR experiments were performed at Q-band and 300 K on Mn2+ doped (CH3)4NCdCl3. Beside the single ion resonance many weak lines could be observed which can be attributed to nearest neighbour pairs of Mn2+ lying along the crystallographic c-axis. The spectra can be described using a Hamiltonian for strongly exchange coupled pairs. The obtained data show that the ionic separation varies in the different spin states. So an additional interaction occurs on the Mn2+ dimer, which can be interpreted as an exchange striction effect. |
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