Magnetic property, Raman spectroscopy and crystal field analysis of Sm3+ in Sm(BrO3)3⋅9H2O

Abstract

Single crystals of Sm(BrO3)3⋅9H2O (SmBR) were grown and the principal molar susceptibility perpendicular to c-axis (χ⊥) was measured from 300 K down to 14 K and χ‖, the parallel susceptibility, anisotropy was measured in the temperature range of 300-120 K. A cross-over between χ‖ and χ⊥ was observed at ∼ 120 K i.e., below this temperature χ|||<χ‖. Raman spectra of SmBR were recorded in the wave number range of 10-4000 cm−1 and crystal field (CF) Stark energies were extracted from the spectra. A good theoretical simulation of the observed magnetic susceptibilities and observed CF Stark energies of Sm3+ in SmBR was achieved using the one electron crystal field (CF) interaction with D3h site symmetry. The electronic specific heat along with the quadruple splitting and hyperfine heat capacity were calculated by using the results of CF analysis.