title: Calorimetric and dielectric studies of ferroelectric sodium nitrite confined in a nanoscale porous glass matrix.
abstract: Heat-capacity measurements of the sodium nitrite confined in a nanoscale porous glass matrix show that the intermediate incommensurate phase, present in the bulk, has disappeared and that the first-order ferroelectric transition becomes suppressed and gradual. The ferroelectric transition temperature is shifted considerably to lower temperatures. Two noncritical dielectric modes were observed; however, the observed giant growth of the dielectric constant on heating through the transition temperature TC is shown to be mainly due to the electrode polarization effect.
authors.affiliation: Jozef Stefan Institute, P.O. Box 3000, 1001 Ljubljana, Slovenia. zdravko.kutnjak@ijs.si
authors.forename: Zdravko
authors.initials: Z
authors.lastname: Kutnjak
authors.forename: Boris
authors.initials: B
authors.lastname: Vodopivec
authors.forename: Robert
authors.initials: R
authors.lastname: Blinc
authors.forename: Alexander V
authors.initials: AV
authors.lastname: Fokin
authors.forename: Yuri A
authors.initials: YA
authors.lastname: Kumzerov
authors.forename: Sergey B
authors.initials: SB
authors.lastname: Vakhrushev