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Interpretation of the Electric Field Effect on the Ground State Splitting of Mn ++ Ions in NaCl
Author(s) -
Dreybrodt W.,
Silber D.
Publication year - 1969
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.19690340216
Subject(s) - ground state , ion , electric field , field (mathematics) , atomic physics , vacancy defect , sign (mathematics) , physics , interpretation (philosophy) , chemistry , condensed matter physics , quantum mechanics , mathematics , mathematical analysis , pure mathematics , computer science , programming language
The c S 5/2 ground state splitting of Mn ++ centres with an associated nearest neighbour cation vacancy in NaCl is calculated from a point ion model of the centre by using various theoretically proposed mechanisms. It is shown that the main contribution to the ground state splitting parameters results from a relativistic effect. The electric field induced changes of the ground state splitting are calculated from this mechanism. There are two contributions: 1. The combined effect of the external field and internal odd fields. 2. The change of the internal even fields from field induced relaxations of the centre. The results agree in sign and order of magnitude with the experimental data.