Nuclear Magnetic Resonance and Transferred Hyperfine Interactions for133Cs in a CsMnCl3 � 2 H2 O Single Crystal

Abstract

133Cs NMR in a CsMnCl3 · 2 H2O single crystal has been investigated by employing a Bruker FT NMR spectrometer. The rotation patterns of the 133Cs NMR spectra were obtained in three mutually perpendicular planes under an applied magnetic field of 4.7 T. From the experimental data, the nuclear quadrupole coupling constant e2qQ/h and the asymmetry parameter η are determined at room temperature. The principal axes X, Y, and Z of the EFG tensor for the Cs ion are found to lie along the crystallographic axes c + 45°, b + 45°, and a-axis, respectively. The temperature dependence of the quadrupole parameters in the temperature range of 120 to 320 K is roughly explained with a single torsional frequency of the Cs–Cl bond in terms of the simple Bayer theory. Also, we have investigated the transferred hyperfine interactions due to the transfer of the spin density from the Mn2+ to the Cs+ ion in a CsMnCl3 · 2 H2O single crystal using the magnetic susceptibility and the paramagnetic shift using NMR.