Ferroelectric, piezoelectric, and dielectric properties of BiScO3-PbTiO3-Pb(Cd1/3Nb2/3)O3 ternary high temperature piezoelectric ceramics

Abstract

Articles you may be interested inEnhanced piezoelectric performance of (0.98-x)Bi(Sc3/4In1/4)O3-xPbTiO3-0.02Pb(Zn1/3Nb2/3)O3 ternary high temperature piezoelectric ceramics (0.95-x)BiScO 3 -xPbTiO 3 -0.05Pb(Cd 1/3 Nb 2/3 )O 3 (BS-xPT-PCN) high temperature piezoelectric ceramics near the morphotropic phase boundary (MPB) have been synthesized by traditional solidstate reaction methods. The microstructural morphology, phase structure, and electrical properties of BS-xPT-PCN ceramics were investigated in detail. X-ray diffraction analysis indicated BS-xPT-PCN ceramics have a pure perovskite structure. The coexistence of rhombohedral and tetragonal phases at MPB composition enhanced the polarizability by the coupling between two dynamically equivalent energy states, resulting in the improved piezoelectric and ferroelectric properties at MPB vicinity. The BS-xPT-PCN (x ¼ 0.60) ceramics possess the optimal piezoelectric and ferroelectric properties with d 33 ¼ 505pC/N, k p ¼ 55.9%, k t ¼ 36.5%, strain ¼ 0.23% (under the electric field 37.5 kV/cm), and P r ¼ 39.7 lC/cm 2 . High temperature dielectric behaviors showed diffuse phase transition in BS-xPT-PCN ceramics. The Curie temperature T c was found to increase from 371 C to 414 C with x increasing from 0.58 to 0.62. All these results together with the good thermal stabilities make the BS-xPT-PCN ceramics promising candidates for high temperature piezoelectric applications. V C 2013 AIP Publishing LLC. [http://dx.

Electromechanical Performance Optimization of Ni-Doped Bi(Sc, Zr)O3–PbTiO3 Ceramics and Microstructure Analysis

“…On the whole, the x = 0.025/ y = 0.63 sample possesses the optimized comprehensive electromechanical performance with the d 33 of 380 pC/N, k t of 0.51, Q m of 112, and tan δ of 0.010. In order to evaluate the performance achieved in our work, we compared the d 33 and tan δ of our sample with other reported BS-PT ceramic systems, ,,,,− as shown in Figure a. A favorable balance between d 33 and tan δ is achieved in our x = 0.025/ y = 0.63 sample, which exhibits advantages compared with other hard-type BS-PT ceramics, making it promising for practical applications.…”

Review on high temperature piezoelectric ceramics and actuators based on BiScO3–PbTiO3 solid solutions

“…21 Recently, it is also found that adding small amount of ABO 3 end members in BS-PT solid solutions, such as Ba(Sr, Ti)O 3 , LiNbO 3 , LiSbO 3 , Pb(Zn 1=3 Nb 2=3 )O 3 , Pb(Mn 1=3 Nb 2=3 ) O 3 , and Pb(Sc 1=2 Nb 1=2 )O 3 are able to increase the piezoelectric constant up to 500 pC/N. [38][39][40][41][42][43][44] However, the ABO 3 end members will decrease the Curie temperature obviously. Wang et al found that the BS-PT ceramics derived from two-step method has a large d 33 value of 700 pC/N with slightly decreased Curie temperature of 446 C. 45,46 The enhanced piezoelectric properties may result from the fine grain, which indicates small domain structure in the BS-PT ceramics.…”

Lead‐reduced Bi(Ni2/3Ta1/3)O3‐PbTiO3 perovskite ceramics with high Curie temperature and performance

“…Ferro‐/piezo‐electric materials are a special class of functional materials which achieve the interconvertibility between the mechanical energy and the electrical energy, and have been subject to widespread applications in modern electronic devices, actuators and sensors . Although nowadays Pb‐based (PbZr x Ti 1− x O 3 , PZT) ceramics have been widely used, their development and applications are hampered because of low Curie temperatures ( T C ) . In addition, many piezoelectric ceramics display higher piezoelectric coefficient d 33 and electromechanical coupling properties than PZT, but too low T C is also a major obstacle to their applications, such as Pb(Mg 1/3 Nb 2/3 )O 3 ‐PbTiO 3 (PMNT, T C ~ 130°C), Pb(Zn 1/3 Nb 2/3 )O 3 ‐PbTiO 3 (PZNT, T C ~ 160°C), Ba x Ca 1− x Zr y Ti 1− y O 3 ( T C ~ 90°C, T r‐t ~ 40°C).…”