Dielectric properties of porous aluminum and silicon oxides with inclusions of triglycine sulfate and its modified analogs

Dielectric properties of an organic ferroelectric of bromide diisopropylammonium embedded into the pores of nanosized Al2O3 films

“…Another study [6] indicated the expansion of ferroelectric phase in Rochelle salt inclusion in Al 2 O 3 due to the increase and decrease in the upper and lower phase transitions. The change in phase transition temperature was also observed for sodium nitrite, triglycine sulfate, thiourea and potassium iodate embedded into porous aluminum oxide [7][8][9][10].…”

“…Depending on preparation technique, the pore diameter of Al 2 O 3 film varies from 20 to 400 nm with a density of 10 8 -10 12 pores cm −2 . Studies on properties of ferroelectric nanostructures obtained from nanoporous Al 2 O 3 were carried out as reported in numerous works [5][6][7][8][9][10]. The authors of [5] reported the stabilization of ferroelectric phase in Rochelle salt embedded into Al 2 O 3 pores up to the decomposition temperature (328 K) i.e.…”

Nanostructures on the Basis of Porous Alumina with Intercalated with Cholesteric Liquid Crystal

“…Since the films are highly adsorptive their properties significantly change over time due to absorbance of moisture form air. Therefore, before filling the porous matrix should be kept in a vacuum of 10 −4 −10 −5 Pa [6,7]. X-ray study of Al 2 O 3 films showed they have an amorphous structure.…”