Open AccessPyroelectric properties of 91.5Na0.5Bi0.5TiO3–8.5K0.5Bi0.5TiO3lead-free single crystal
Author(s) -
Bo Zhang,
Renbing Sun,
Fang Wang,
Ting Feng,
Pengna Zhang,
Haosu Luo
Publication year - 2021
Publication title -
journal of advanced dielectrics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.38
H-Index - 13
eISSN - 2010-135X
pISSN - 2010-1368
DOI - 10.1142/s2010135x21500235
Subject(s) - pyroelectricity , crystal (programming language) , physics , single crystal , atmospheric temperature range , dielectric , crystallography , materials science , condensed matter physics , combinatorics , analytical chemistry (journal) , thermodynamics , quantum mechanics , mathematics , nuclear magnetic resonance , chemistry , ferroelectricity , computer science , chromatography , programming language
The dielectric and pyroelectric performances of 91.5[Formula: see text][Formula: see text]TiO 3 –8.5[Formula: see text][Formula: see text]TiO 3 lead-free single crystal were investigated. The depolarization temperature of the crystal is about 153 [Formula: see text]C. Among the , , and crystallographic orientations, the -oriented crystal possesses the highest pyroelectric coefficient and the largest figures of merit, and the values of [Formula: see text], [Formula: see text], and [Formula: see text]are 5.63×10[Formula: see text] C/m 2 •K, 0.06 m 2 /C, and 21.5 [Formula: see text]Pa[Formula: see text] for the -oriented crystal at room temperature. The [Formula: see text]and [Formula: see text]exhibit weak frequency dependence in the range of 100–300 Hz. With the increase of the temperature, the value of [Formula: see text]increases, while the value of [Formula: see text] decreases from 18 [Formula: see text]C to 103 [Formula: see text]C.