The influence of preparation technology on phase transitions in NaNO2 embedded into porous glass

• Autorzy: Rysiakiewicz-Pasek E. , Jagus P.
• Języki publikacji: EN

Abstrakty

EN

The dielectric properties of sodium nitrite embedded into porous glasses with the average pore diameter of 45 nm and 320 nm have been studied. The samples were obtained by immersion of empty porous glass into the melted NaNO2 and then they stayed there for 24 and 8 hours. The sequence of phase transitions (PT) from the paraelectric phase to the sinusoidal antiferroelectric phase and to the ferroelectric phase has been observed in these nanocomposite materials on cooling. It is shown that due to the size effect, the temperatures of these PTs are lower than in bulk NaNO2

Słowa kluczowe

EN

porous glass; ferroelectric; phase transition; size effect

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Optica Applicata
• Rocznik: 2008
• Tom: Vol. 38, nr 1
• Strony: 101--107
• Opis fizyczny: Bibliogr. 9 poz.

Twórcy

autor

Rysiakiewicz-Pasek E.

autor

Jagus P.

• Institute of Physics, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

Bibliografia

• [1] KUTNJAK Z., VODOPIVEC B., BLINC R., FOKIN A.V., KUZMEROV Y.A., VAKHRUSHEV S.B., Calorimetric and dielectric studies of ferroelectric sodium nitrite confined in a nanoscale porous glass matrix, Journal of Chemical Physics 123(8), 2005, p. 084708.
• [2] SCOTT J., DUIKER H., BEALE P., POULIGNY B., DIMMLER K., PARRIS M., BUTLER D., EATON S., Properties of ceramic KNO3 thin-film memories, Physica B: Condensed Matter 150, 1988, p. 160.
• [3] MARQUARDT P., GLEITER H., Ferroelectric phase transition in microcrystals, Physical Review Letters 48(20), 1982, pp. 1423–5.
• [4] ISHIKAWA K., YOSHIKAWA K., OKADA N., Size effect on the ferroelectric phase transition in PbTiO3 ultrafine particles, Physical Review B: Condensed Matter 37(10), 1988, pp. 5852–5.
• [5] CHENG TIEN, CHARNAYA E., BARYSHNIKOV S., LEE M.K., SUN S.Y., MICHEL D., BÖHLMANN W., Эволюция NaNO2 в пористых матрицах, Fizika Tverdogo Tela 46(12), 2004, pp. 2224–8.
• [6] KINKA M., BANYS J., NABEREZHNOV A., Dielectric properties of sodium nitrite confined in porous glass, Ferroelectrics 348, 2007, pp. 67–74.
• [7] RYSIAKIEWICZ-PASEK E., POPRAWSKI R., POLANSKA J., URBANOWICZ A., SIERADZKI A., Properties of porous glasses with embedded ferroelectric materials, Journal of Non-Crystalline Solids 352(40–41), 2006, pp. 4309–14.
• [8] POPRAWSKI R., RYSIAKIEWICZ-PASEK E., SIERADZKI A., CIZMAN A., POLANSKA J., Ferroelectric phase transitions in KNO3 embedded into porous glasses, Journal of Non-Crystalline Solids 353(47–51),2007, pp. 4457–61.
• [9] HARTWIG C., WIENER-AVNEAR E., PORTO S.P.S., Analysis of the temperature-dependent phonon structure in sodium nitrite by Raman spectroscopy, Physical Review B: Solid-State 5(1), 1972, pp. 79–91.