Electron spin‐lattice relaxation of Cu2+ ions in planar coordination geometries: Calculation and experimental data of T1 for Cu2+ in Ni(II) bis(diethyl‐dithiocarbamate) crystals
- 1 October 1976
- journal article
- research article
- Published by Wiley in Physica Status Solidi (b)
- Vol. 77 (2) , 505-515
- https://doi.org/10.1002/pssb.2220770211
Abstract
A general formula is derived for the direct spin‐lattice relaxation process of paramagnetic ions with S = ½ for arbitrary orientations of an external magnetic field relative to the crystal axes. Using the formula obtained, T1 of Cu2+ ions in square planar coordination geometries is calculated in the point charge approximation. The temperature, concentration, and angular dependence of T1 of Cu2+ ions in Ni(II)bis(diethyl‐dithiocarbamate) single crystals are reported. Including some features of covalency a reasonable agreement between the theoretical and experimental values of T1 is reached.Keywords
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