Investigations of silicon nano-crystal floating gate memories
Arvind Kumar, Jeffrey J. Welser, et al.
MRS Spring 2000
We describe a method of measuring spin-lattice relaxation rates of dilute nuclei using optical hole burning. This was applied to Pr141 nuclei doped into LaF3 at low concentrations (0.01 to 2.0 at.%). The observed relaxation rates varied by about two orders of magnitude between 2 and 4.5 K. At the lowest concentrations the data are interpreted in terms of two mechanisms: resonant two-phonon (Orbach) relaxation with a 57-cm-1 activation, and praseodymiumlanthanum cross relaxation. At higher concentrations an additional hole-filling process was observed and attributed to homonuclear Pr-Pr dipolar coupling. Theoretical estimates of the phonon-induced relaxation rates are given and agree approximately with experimental values. © 1980 The American Physical Society.
Arvind Kumar, Jeffrey J. Welser, et al.
MRS Spring 2000
R. Ghez, M.B. Small
JES
William G. Van der Sluys, Alfred P. Sattelberger, et al.
Polyhedron
Frank Stem
C R C Critical Reviews in Solid State Sciences