Abstract

X-Band (~9.6 GHz) electron paramagnetic resonance (EPR) measurements were carried out on a single crystal of Y(BrO3)3·9H2O in the temperature range of 10–300 K. The values of the spin-Hamiltonian (SH) parameters for the Gd3+ ion at the monoclinic site symmetry have been estimated from the angular variation of the line positions at room- and liquid-nitrogen temperatures, using a least-squares fitting procedure, employing numerical diagonalization of the SH matrix. These EPR results on a Gd3+-doped Y(BrO3)3·9H2O single crystal are found to be significantly different from those reported for the other rare-earth bromate nonahydrate crystals R(BrO3)3·9H2O; R = Pr, Nd, Sm, Eu, Dy.

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