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133 Cs Quadrupole Perturbed NMR Study of Jahn‐Teller Phase Transitions in CsCuCl 3 2 )
Author(s) -
Corti M.,
Rigamonti A.,
Magistris A.
Publication year - 1981
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.2221080104
Subject(s) - quadrupole , jahn–teller effect , condensed matter physics , dipole , relaxation (psychology) , phase transition , spin–lattice relaxation , dielectric , ion , chemistry , nuclear quadrupole resonance , atmospheric temperature range , atomic physics , materials science , physics , thermodynamics , social psychology , psychology , optoelectronics , organic chemistry
133 Cs nuclear spin‐lattice relaxation measurements in CsCuCl 3 , in the temperature range 100 to 700 K, and an analysis of the first‐order static quadrupole effects on the NMR levels, are reported. Some data regarding the dc conductivity and the dielectric constant are mentioned and briefly discussed. Interesting insights in the static and dynamical properties of CsCuCI 3 , around the 418 K phase transition to the helical electric dipole structure driven by the cooperative Jahn‐Teller effect are obtained. The 133Cs spin‐lattice relaxation is driven by the fluctuations of the dipolar magnetic field from the Cu 2+ ion and its temperature dependence is interpreted in the light of the properties of the electronic spin dynamics in presence of crystalline field effects.