Planar spin fluctuations with a quadratic thermal dependence rate in spin liquid Gd3Ga5O12.
The spin liquid properties of Gd3Ga5O12 have been examined using 155Gd Mössbauer spectroscopy down to 0.027 K. Information has been obtained concerning both the directional properties of the short range correlated moments and the thermal dependence of their spin fluctuation rates. Each Gd3+ spin (S=7/2) is found to be confined to a plane and its fluctuation rate decreases from approximately 2.8 x 10(9) s(-1) at 0.4 K to approximately 0.03 x 10(9) s(-1) at 0.09 K following a close-to-quadratic thermal dependence.
Bonville
P
P
C.E.A., Centre d'Etudes de Saclay, Service de Physique de l'Etat Condensé, 91191 Gif-sur-Yvette, France.
Hodges
J A
JA
Sanchez
J P
JP
Vulliet
P
P