ND4 Deuteron NMR and the Smearing of the Glass Transition in Rb1-x(ND4)xD2PO4
Abstract
The broadening of the rotationally averaged ND4+ deuteron lines in Rb0.56(ND4)0.44D2PO4 due to the gradual "acid" deuteron freeze-out allows for a direct determination of the Edwards-Anderson pseudospin glass order parameter q far above the nominal glass transition temperature TG. The data provide strong evidence for a model where the basic difference between magnetic spin glasses and proton or deuteron pseudospin glasses is the presence of an inherent random field resulting from the substitutional disorder. This field acts as an ordering field conjugate to the pseudospin glass order parameter q and is responsible for the smearing of the deuteron glass transition.
Citation
Blinc, R, J Dolinsek, V. H Schmidt, and D. C Ailion. “ ND 4 Deuteron NMR and the Smearing of the Glass Transition in Rb 1- x (ND 4 ) x D 2 PO 4 .� Europhysics Letters (EPL) 6, no. 1 (May 1, 1988): 55–60. doi:10.1209/0295-5075/6/1/010.