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Multiple‐Quantum Transitions and Optical Excitation Processes in the EPR of Mn 2+ in ZnS
Author(s) -
Backs I.,
Stösser R.,
Lieberenz M.
Publication year - 1985
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.2221310130
Subject(s) - electron paramagnetic resonance , excitation , microwave , anisotropy , saturation (graph theory) , atomic physics , resonance (particle physics) , manganese , quantum , chemistry , molecular physics , condensed matter physics , nuclear magnetic resonance , physics , optics , quantum mechanics , mathematics , combinatorics , organic chemistry
Microwave induced resonances of multiple‐quantum transitions, observed by the EPR method, are described for the system ZnS:Mn. From the anisotropy of the resonance lines, the EPR signal intensity‐microwave power dependence and the theoretical and practical intensity ratio of one‐and multiple‐quantum transitions it is concluded that the resonances are due to double‐and triple‐quantum transitions. Under certain experimental conditions a phase inverted EPR line is observed. Some irregularities are observed in the manganese EPR spectrum for the samples used. This is an optical excitation following microwave saturation, a different saturation dependence of the various fine structure transitions, a deviation of the occupation numbers from thermal equilibrium and of the fine structure line intensity from the theoretical ratio.