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Effect of pressure and temperature on the EPR spectrum of Cr 3+ ions in α‐LiIO 3 single crystals
Author(s) -
Krupski M.,
Mirzakhanyan A. A.,
Hilczer W.,
Sharoyan E. G.
Publication year - 1986
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.2221330141
Subject(s) - hydrostatic pressure , compressibility , ion , condensed matter physics , thermal expansion , electron paramagnetic resonance , octahedron , single crystal , negative thermal expansion , materials science , chemistry , thermodynamics , crystallography , nuclear magnetic resonance , physics , organic chemistry
Results concerning the influence of hydrostatic pressure, uniaxial stress, and temperature on the spin‐Hamiltonian parameters of Cr 3+ in α‐LiIO 3 , single crystals are reported. Assuming that the local compressibility and thermal expansion of the nearest surroundings of the Cr 3+ ion is the same as of α‐LiIO 3 crystal lattice it is shown that the temperature and pressure variations on the D ‐parameter are mainly due to thermal expansion and compressibility of the lattice, whereas the contribution from spin‐phonon interactions is several times smaller. The deformation of the oxygen octahedron close to the Cr 3+ ion is determined.