ISSN:
1089-7690
Source:
AIP Digital Archive
Topics:
Physics
,
Chemistry and Pharmacology
Notes:
The temperature dependence of the EPR spectrum of Mn2+ in ZnSiF6⋅6H2O was measured at 9.2 GHz between 15 and 297 K. Both the g and A tensors were found to be isotropic with values close to 2.000 and −90×10−4 cm−1, respectively. A slight decrease in the magnitude of A with increasing temperature was observed. The zero-field splitting parameters D and a–F were found to vary from −130.5×10−4 and 9.9×10−4 cm−1, respectively, at 15 K to −170.2×10−4 and 7.8×10−4 cm−1, respectively, at 297 K. The data for D below 100 K were fitted to the orbit–lattice interaction in the long-wavelength approximation with a Debye temperature of 138 K. An estimate of the low-temperature ratio of D for Ni2+ and Mn2+ in ZnSiF6⋅6H2O based on the long-wavelength fits was in good agreement with the measured ratio of 10 at 4 K.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.451937
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