Proton-glass behavior and phase diagram of theK1−x(NH

Phase transitions in nanostructured K1-x(NH4)(x)H2PO4 (x = 0 – 0.15) solid solutions

“…Simultaneously the temperature hysteresis ∆T C decreases with increased ADP concentration. The obtained results in comparison with literature data [6][7][8][9][10][11] for the bulk KADP are presented in Table 1.…”

“…At RT the [6][7][8][9][10][11] Present work KADP nanoparticles crystal structure of KADP embedded into the pores corresponds to the bulk structure. The average nanoparticle diameters are equal to ∼53(5) nm for the pure KDP nanoparticles, 49(2) nm for the sample with 5 % of ADP and 46(2) nm for 15 % of ADP.…”

Thermodynamics, dielectric permittivity and phase diagrams of the Rb_{1-x}(NH_{4})_{x}H_{2}PO_{4} type proton glasses

“…It becomes larger and sharper with lowering x. Such a behavior of ε 33 (T, ν) was observed in [17], and K 1−x (NH 4 ) x H 2 PO 4 [22,23,54,55].…”

“…Experimental measurements of the dielectric permittivity of Rb 1−x (NH 4 ) x H 2 PO 4 [1][2][3][4][5][6][7][8], Rb 1−x (ND 4 ) x D 2 PO 4 [7,[9][10][11][12][13][14], Rb 1−x (NH 4 ) x H 2 AsO 4 [15][16][17][18], and K 1−x (NH 4 ) x H 2 PO 4 [19][20][21][22][23] in the glass phase composition region have shown that the temperature curves of the longitudinal ε 33 (T, ν) and transverse ε 11 (T, ν) permittivities are qualitatively similar. At high temperatures the real parts of the permittivities are roughly described by the Curie-Weiss law.…”

Dielectric Properties of K1-x(NH4)xH2PO4(x= 0.095) Crystal

“…In recent years, some measurements in the KADP crystals have been made [1][2][3][4][5][6][7][8]. The glass state of K 1−x (NH 4 ) x H 2 PO 4 occurs in the range of the concentration 0.25 < x < 0.65 [1,7,8].…”