Ferroelectric phase transitions in materials embedded in porous media

Large quantities of highly dispersed ferroelectric objects were obtained by impregnation of two porous dielectric matrixes (porous glass and artificial opal) with molten ferroelectric materials (NaNO 2, KH 2PO 4 (KDP)). The diameters of ferroelectric nanoparticles may be varied from about 100 nm to...

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Bibliographic Details
Published inNanostructured materials Vol. 12; no. 5; pp. 963 - 966
Main Authors Colla, E.V., Fokin, A.V., Koroleva, E.Yu, Kumzerov, Yu.A., Vakhrushev, S.B., Savenko, B.N.
Format Journal Article
LanguageEnglish
Published Elsevier Science 1999
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Summary:Large quantities of highly dispersed ferroelectric objects were obtained by impregnation of two porous dielectric matrixes (porous glass and artificial opal) with molten ferroelectric materials (NaNO 2, KH 2PO 4 (KDP)). The diameters of ferroelectric nanoparticles may be varied from about 100 nm to 3–4 nm. The neutron scattering measurements for NaNO 2 particles and low frequency dielectric permittivity measurements for NaNO 2, KDP and Rochelle salt particles were performed on such nanosize particles systems. The significant shift of transition temperature from the bulk value for KDP particles as the transition broadening for NaNO 2 and KDP particles was observed.
ISSN:0965-9773
1872-9150
DOI:10.1016/S0965-9773(99)00278-0