Abstract
Crystal structure and EPR spectra in a RbNd(WO 4) 2 single crystal have been studied. RbNd(WO 4) 2 crystallizes in the monoclinic structure with the unit cell parameters: a = 1 0.7 9 2 ( 2 ) Å , b = 1 0.6 7 3 ( 2 ) Å , c = 7.6 7 0 3 ( 1 5 ) Å , β = 1 3 0.5 1 ( 3 ) ° . Using the X-ray diffraction measurements, the fractional atomic coordinates, displacement parameters and interatomic distances have been determined. The EPR spectra are described in terms of the main g-tensor values: g z = 3.2 9 1 ± 0.0 0 5 , g x = 0.7 2 6 ± 0.0 0 5 , g y = 1.5 3 3 ± 0.0 0 5 . Both the magnetic dipole–dipole and isotropic exchange interactions have been calculated. The exchange interactions are shown to exceed the magnetic dipole–dipole interactions and to have an opposite sign. These results suggest an appeareance of an antiferromagnetic ordering in RbNd(WO 4) 2 at low temperatures.
Published Version
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