Study of glass-nanocomposite and glass–ceramic containing ferroelectric phase

Crystallization and Dielectric Properties of Ferroelectric Glass-Ceramics Containing Sodium Niobate Crystals

“…4. The dielectric constant became larger at both lower frequencies and higher temperatures which is normal for oxide glasses and is not evidence of spontaneous polarization [19]. The observed lower dielectric constants at higher frequencies are associated with lower polarizability contributions from ionic species and their orientations.…”

Structural and optical properties of barium titanium borate glasses doped with ytterbium

“…ions. (ii) The second band (545-760 cm -1 ) becomes more broadened and splits into two bands centred at 572 and 721 cm -1 due to the bending modes of various borate groups and the vibrations of TiO 4 groups, respectively [38,41]. (iii) The intensity of the third band (776-1167 cm -1 ) increases with increasing the concentration of Yb 3?…”

“…The spectrum of the base undoped glass (BTiBaYb0) reveals a small band in the region 458-501 cm -1 with two peaks at 469 and 483 cm -1 due to vibration of barium ions [37]. Furthermore, a broad band in the region 545-760 cm -1 with its peak at 625 cm -1 is ascribed to vibration of titaniumoxygen bond in TiO 6 groups [38]. Moreover, a broad band in the region 776-1167 cm -1 is attributed to stretching vibration of BO 4 groups [39].…”

Structural and optical properties of BaTiO3 modified cadmium alkali borate glasses

“…These features can be served in the potentials of actuators, storage and resonant wave devices, flash memories, etc [14][15][16][17]. BaTiO 3 as a promising candidate in the fields depends on the very high dielectric constant and low dielectric loss is one of the highly investigated materials in the last few years [18][19][20][21]. Since the crystalline phase, BaTiO 3 has a high melt point and is less able to form glass, one can obtain glasses based on BaTiO 3 by considering the host glass with comparatively low melting point and ability to form glass easily.…”

“…According to the literature, many works deal with the dielectric and structural characteristics of glasses or glass-ceramics containing BaTiO 3 [18][19][20][21][22]. Up to our information, there is no elaborated work accessible on the investigation of variations arising from the variety of BaTiO 3 content in alkali borate glasses containing CdO or CuO.…”