Large quantities of highly dispersed ferroelectric objects were obtained by
impregnation of two porous dielectric matrixes (porous glass and artificia
l opal) with molten ferroelectric materials (NaNO2, KH2PO4 (KDP)). The diam
eters of ferroelectric nanoparticles may be varied from about 100 nm to 3-4
nm. The neutron scattering measurements for NaNO2 particles and low freque
ncy dielectric permittivity measurements for NaNO2, KDP and Rochelle salt p
articles were performed on such nanosize particles systems. The significant
shift of transition temperature from the bulk value for KDP particles as t
he transition broadening for NaNO2 and KDP particles was observed. (C) 1999
Acta Metallurgica Inc.