Dielectric properties of the P(VDF60/Tr40) copolymer in the porous glass matrix

Coexistence of Antiferroelectric and Proton Glass States in Mixed K0,26(NH4)0.74H2PO4Crystal Under Restricted Geometry Conditions

“…For example, the temperature of ferroelectric phase transition T C in sodium nitrite [1], as well as in polyvinylidene fluoride/trifluoroethylene copolymers [2] embedded into porous glasses decreases at reduction of average pore diameters. On the contrary, in triglycine sulphate [3] and potassium dihydrogen phosphate (KH 2 PO 4 ) crystals [4] the temperature T C increases with pores diameter decreasing.…”

Phase diagrams of ferroelectric nanocrystals strained by an elastic matrix

“…Indeed, they may be coupled to each other forming nanocrystalline ceramics [3], attached to a substrate in arrays of islands [1,4], or bonded to a dissimilar material along the whole surface, as it happens in composites. Ferroelectric nanocomposites have been widely fabricated by intruding various ferroelectrics into pores of dielectric matrices [5][6][7][8][9][10][11][12][13][14][15][16][17][18]. This approach was realized using different porous dielectrics, such as porous silica glass [9], synthetic opals [5], sodium borosilicate glass with a high porosity [11], nanoporous aluminum oxide [14], and molecular sieves [15].…”