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Correction to the Breakdown of the Long‐Wavelength Approximation and Characteristic Temperatures in Impurity Ion Paramagnetic Resonance
Author(s) -
Singh A.,
Shrivastava K. N.
Publication year - 1980
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.2221010104
Subject(s) - bessel function , impurity , zero (linguistics) , wavelength , ion , condensed matter physics , field (mathematics) , paramagnetism , resonance (particle physics) , physics , atomic physics , chemistry , materials science , mathematics , quantum mechanics , philosophy , linguistics , pure mathematics
Abstract In the temperature dependence of the zero field splitting of PbWO 4 :Mn 2+ , the long‐wavelength approximation breaks down near T b ≈ 150 K. A correction factor is obtained using Bessel functions which explains the observation. In the temperature dependence of the zero field splitting of V 2+ in NaCl, KCl, and RbCl a minimum is found and a zero at characteristic temperatures, T c2 and T 02 , which are related by T 02 = √2 T c2 . This theoretical relation between the two temper‐atures is varified experimentally.