J. Phys. Colloques 49 (1988) C8-2027-C8-2028
MAGNETOACOUSTIC INTERFEROMETRY OF METASTABLE STATES IN Dy3Al5O12J. F. Gregg1, 2, I. D. Morris1, 2, M. R. Wells1, 2 et W. P. Wolf1, 2
1 The Clarendon Laboratory, Parks Road, Oxford. OX1 3PU G.B.
2 Becton Center, Yale University, P.O. Box 2157, CT 06520 U.S.A.
We describe the construction and operation of an acoustic interferometer of exceptional sensitivity which we use to probe metastable phenomena that occur between the two time reversed antiferromagnetic states in Dy3Al5O12, in the vicinity of the phase transition to the paramagnetic state.