Investigations of silicon nano-crystal floating gate memories
Arvind Kumar, Jeffrey J. Welser, et al.
MRS Spring 2000
Reports detailed experimental studies of the onset of hard-mode Raman activity near the cubic-tetragonal structural phase transitions in KMnF 3 and RbCaF3. The results are discussed in the context of a theory taking into account the influence not only of the long-range order, reflected in the macroscopic order parameter, but also that of the precursor order reflected in the central peak and phonon sideband of the soft-mode spectral function. The precursor order, dominant near the phase transition, is responsible for the persistence of quasi-first-order hard-mode features above the transition temperature. The extent of this persistence is used as a basis for specific estimates of the degree of precursor order in KMnF3 and RbCaF3.
Arvind Kumar, Jeffrey J. Welser, et al.
MRS Spring 2000
David B. Mitzi
Journal of Materials Chemistry
E. Burstein
Ferroelectrics
J.R. Thompson, Yang Ren Sun, et al.
Physica A: Statistical Mechanics and its Applications