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Spin‐lattice relaxation of the O 2 − centre in RbI and RbBr
Author(s) -
Matthys P.,
Vanhaelst M.,
Boesman E.
Publication year - 1976
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.2220770124
Subject(s) - anisotropy , condensed matter physics , rubidium , spin–lattice relaxation , perpendicular , lattice (music) , chemistry , principal axis theorem , physics , potassium , quantum mechanics , geometry , mathematics , paramagnetism , organic chemistry , acoustics
Abstract Pulse saturation measurements of spin‐lattice relaxation rates of O 2 −centres in rubidium bromide and iodide are reported. A theoretical calculation for the direct process in these salts is summarised. Phonon integrals appearing in the theoretical formulas are calculated numerically using an anisotropic continuum model, thus improving agreement with experiment. The significance of an unexpected anisotropy for two principal directions, perpendicular to the molecular axis, is discussed in the RbBr case.