TY - JOUR
T1 - Preparation and improvement in the electrical properties of lead-zinc-niobate-based ceramics by thermal treatments
AU - Fan, Huiqing
AU - Park, Gun Tae
AU - Choi, Jong Jin
AU - Ryu, Jungho
AU - Kim, Hyoun Ee
PY - 2002/1
Y1 - 2002/1
N2 - The piezoelectric and dielectric properties of Pb(Zn1/3Nb2/3)O3 (PZN)-based ceramics were investigated. The perovskite structure of PZN ceramics was stabilized by the addition of Pb(Zn0.47Ti0.53)O3 (PZT). The highest piezoelectric properties were observed for the composition of 0.5PZN-0.5PZT, which lies on the two-phase zone of morphotropic phase boundary. For further improvements in electric properties, the specimens were thermally treated in a flowing O2 atmosphere at temperatures ranging from 860 to 1030 °C. The thermal treatment eliminated the PbO-rich amorphous intergranular layer by lead evaporation. As a result of this improvement in structure, the dielectric constant (ε′), the piezoelectric coefficient (d33), and the electromechanical coupling factor (kp), were enhanced markedly after thermal annealing at 960 °C for 8 h in an O2 atmosphere.
AB - The piezoelectric and dielectric properties of Pb(Zn1/3Nb2/3)O3 (PZN)-based ceramics were investigated. The perovskite structure of PZN ceramics was stabilized by the addition of Pb(Zn0.47Ti0.53)O3 (PZT). The highest piezoelectric properties were observed for the composition of 0.5PZN-0.5PZT, which lies on the two-phase zone of morphotropic phase boundary. For further improvements in electric properties, the specimens were thermally treated in a flowing O2 atmosphere at temperatures ranging from 860 to 1030 °C. The thermal treatment eliminated the PbO-rich amorphous intergranular layer by lead evaporation. As a result of this improvement in structure, the dielectric constant (ε′), the piezoelectric coefficient (d33), and the electromechanical coupling factor (kp), were enhanced markedly after thermal annealing at 960 °C for 8 h in an O2 atmosphere.
UR - http://www.scopus.com/inward/record.url?scp=0036262470&partnerID=8YFLogxK
U2 - 10.1557/JMR.2002.0027
DO - 10.1557/JMR.2002.0027
M3 - 文章
AN - SCOPUS:0036262470
SN - 0884-2914
VL - 17
SP - 180
EP - 185
JO - Journal of Materials Research
JF - Journal of Materials Research
IS - 1
ER -