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Articles you may be interested inMagnetic measurements on Pr (BrO3)39H2O single crystal and a study of the effects and origin of the crystal fieldThe crystal structures ofPrX 3 (X = Br, en and particularly the detailed coordination of the halides X have been studied by neutron diffraction on polycrystalline samples in the temperature range between 4.2 and 293 K. Furthermore, the crystalline electric fields (CEF) in the two compounds have been investigated by inelastic neutron scattering experiments on single-crystal samples. The observed CEF transitions have been identified according to the transition matrix elements and the polarization factor in the neutron cross section, which allowed an unambiguous determination of the four CEF parameters for hexagonal symmetry. The energetic ordering of the CEF levels in PrEr) and PrCl 3 are considerably different which can be understood in terms of the different geometric coordination of the halides determined from the diffraction results.

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