Optical spectroscopy of low-dimensional rare-earth iron borates |
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Authors: | MN Popova |
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Institution: | Institute of Spectroscopy RAS, Fizicheskaya 5, Troitsk 142190, Moscow Region, Russia |
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Abstract: | The family of RFe3(BO3)4 borates (R=Pr, Nd, Eu-Er, Y) was studied by high-resolution optical absorption and Raman spectroscopies. Structural and magnetic phase transitions were detected and the types of magnetic structure were determined. Energy of crystal-field (CF) levels and exchange splitting of the ground state of the R3+ ion were obtained from the analysis of optical spectra. CF calculations were carried out. Effective magnetic field at the R3+ site was found, using the calculated value of the magnetic g-factor. Some peculiarities of modeling the paramagnetic susceptibility of NdFe3(BO3)4 are discussed. |
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Keywords: | 70 00 00 71 70 &minus d 78 30 &minus j 71 70 Ch |
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