Piezoelectric Properties of Vanadium-Substituted Strontium Bismuth Niobate

Abstract

Vanadium-substituted strontium bismuth niobate, SrBi 2 Nb 1:95 V 0:05 O 9 (SBNV), ceramics were synthesized by a lowtemperature process, and the detailed piezoelectric properties of the SBNV ceramics were characterized. Dense SBNV ceramics were obtained at a sintering temperature of 950 C, which is 200 C lower than that for nonsubstituted (SBN) ceramics. With the substitution of vanadium cations for niobium the ferroelectric D-E hysteresis loops were observed at room temperature and the remanent polarization, P r , and coercive field, E c , obtained were 5.4 mC/cm 2 and 105 kV/cm, respectively. The independent electromechanical coupling factors obtained, which were characterized by the resonance-antiresonance method, were as follows: k p ¼ 0:074, k 31 ¼ 0:045, k 33 ¼ 0:175, k 15 ¼ 0:106, and k t ¼ 0:140. The mechanical quality factor, Q m , of the SBNV ceramics in the (33)-mode was 5500, which was about three times that of SBN. The temperature dependences of the resonance frequency (TCF) in the length extensional vibration mode of the SBNV and SBN ceramics were 42.1 ppm/ C and 34.6 ppm/ C, respectively.

Influences of ScTa co-substitution on the properties of Ultra-high temperature Bi3TiNbO9-based piezoelectric ceramics

“…However, the piezoactivity of pure BTNO ceramics is quite low (d 33 <7 pC/N) [10] for high temperature applications. The A-site substitution or/and B-site substitution have been shown to be effective in modifying the structure and polarization process [11][12][13][14][15][16][17][18][19][20][21][22][23]. Only a few works have addressed the properties of cation-modified BTNO-based ceramics.…”

Crystal structure and dielectric properties of layered perovskite-like solid solutions Bi3−xGdxTiNbO9 (x=0, 0.1, 0.2, 0.3) with high Curie temperature

“…[12][13][14][15][16] Bi 3 TiNbO 9 (BTNO) with m ¼ 2 that consists of (Bi 2 O 2 ) 2þ layers between which there are (BiTiNbO 7 ) 2À layers is a promising material for fabricating high-temperature piezoelectric sensors because of their very high Curie temperature T C (914-921 ○ C), 5,17 despite the fact that the piezoelectric modulus of BTNO ceramic is fairly low (d 33 < 7 pC/N). 18 Numerous examples [19][20][21][22][23][24][25][26][27][28][29][30][31] showed that replacements of atoms in A and also in B positions of an APs crystal lattice led to the change in the structure, the dielectric properties and significantly influenced the polarization processes in these compounds. In this work, we have synthesized a number of new solid solutions of layered perovskite-like oxides Bi 3Àx Gd x TiNbO 9 (x ¼ 0, 0.1, 0.2, 0.3) in which proportions between amounts of Bi 3þ and Lu 3þ ions entering in position A was varied and have studied their crystal lattices, the dielectric and electrophysical characteristics.…”

Кристаллическая структура и диэлектрические свойства слоистых перовскитоподобных твердых растворов Bi-=SUB=-3-x-=/SUB=-Y-=SUB=-x-=/SUB=-TiNbO-=SUB=-9-=/SUB=- (x =0.0,0.1,0.2,0.3) с высокой температурой Кюри

“…Было показано на многочисленных примерах [19][20][21][22][23][24][25][26][27][28][29][30][31], что замены атомов как в A, так и в B-позициях кристал-лической решетки ФА приводят к изменениям структу-ры, диэлектрических свойств и значительно влияет на поляризационные процессы в этих соединениях.…”