Premium
Electron Paramagnetic Resonance of Mn 2+ in Guanidinium Aluminium Sulfate Hexahydrate
Author(s) -
Milsch B.,
Windsch W.
Publication year - 1978
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.2220890131
Subject(s) - electron paramagnetic resonance , hyperfine structure , manganese , paramagnetism , chemistry , ion , impurity , crystal structure , aluminium , crystallography , nuclear magnetic resonance , condensed matter physics , atomic physics , physics , organic chemistry
The electron paramagnetic resonance (EPR) spectrum of Mn 2+ ions in ferroelectric guanidinium aluminium sulfate hexahydrate is analyzed. It turned out that these impurity ions enter into regular Al 3+ lattice sites forming two non‐equivalent magnetic hexaquo‐manganese (II) complexes of axial symmetry. The hyperfine lines of several fine‐structure transitions exhibit a hidden “spin‐flip” satellite structure. It results from the proton ligand hyperfine interaction in the magnetic hexaquocomplexes. A strong dependence on temperature and uniaxial stress is found for the zero‐field splitting parameter D . Its variation with temperature is discussed in terms of thermal lattice expansion and local lattice vibration effects.