Magnetic measurements on the single crystals of Nd(BrO3)3·9H2O and a crystal field investigation of its properties

Abstract Magnetic measurements of the principal magnetic susceptibility ( χ ⊥ ) of neodymium bromate enneahydrate have been carried out from room temperature (295 K) down to 13 K and of the magnetic anisotropy from 295 to 92 K. A crystal field (CF) of D 3h site symmetry with J mixed eigenvectors taking into consideration intermediate coupling effects provides a very good explanation of the observed principal magnetic susceptibilities, the absorption spectra and the g -values. The thermal variation of the Schottky heat capacity, hyperfine heat capacity and the time averaged quadrupole-splitting of 143 Nd and 145 Nd are worked out and discussed theoretically in the light of the proposed CF.