Electron paramagnetic resonance investigations of and in phases II and III of
D Fouejio; J J Rousseau; D Fouejio; Equipe de Physique de l'Etat Condensé, Université du Maine, URA CNRS No 807, 72017 Le Mans Cédex, France; J J Rousseau; Equipe de Physique de l'Etat Condensé, Université du Maine, URA CNRS No 807, 72017 Le Mans Cédex, France
Журнал:
Journal of Physics: Condensed Matter
Дата:
1996-04-08
Аннотация:
E.P.R. studies of the (S = 3/2) and (S = 5/2) ions in the high- (II) and low- (III) temperature phases of are reported. The structural phase transition close to has been demonstrated, using the temperature dependence of the spin-Hamiltonian parameters. The main mechanism of the phase transition is driven by the rotation of the octahedra around the c-axis.
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