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Crystal Field Calculation of Principal Magnetic Susceptibilities and Anisotropy Variation with Temperature of Anhydrous Neodymium Chloride
Author(s) -
Taneja S. P.,
Puri S. P.
Publication year - 1968
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.19680300123
Subject(s) - anhydrous , anisotropy , chemistry , atmospheric temperature range , ion , crystal (programming language) , neodymium , analytical chemistry (journal) , single crystal , paramagnetism , crystallography , condensed matter physics , optics , thermodynamics , physics , laser , organic chemistry , chromatography , computer science , programming language
In the temperature range 5 to 300°K, the principal susceptibilities of single crystals of anhydrous NdCl 3 have been calculated on the assumption that a single suitable trigonal field of C 3 h symmetry exists in the neighbourhood of the Nd 3+ ion. Furthermore the variation of magnetic anisotropy with temperature is studied and found to increase with the decrease of temperature. The g ‐values for the lowest level, viz., g ∥ = 4.103, g ⟂ = 1.746, compare well with the experimental values obtained from paramagnetic resonance absorption. The following crystal field parameters, reported by Judd, were used in these calculations: A 2 0 〈 r 2 〉 = 103.7 cm −1 , A 6 0 〈 r 6 〉 = −44.51 cm −1 , A 4 0 〈 r 4 〉 = −36.01 cm −1 , A 6 6 〈 r 6 〉 = 426.21 cm −1 .