Hur, Joon Seo, In-Tae Kim, Dae-Hyeon Nahm, Sahn Ryu, Jungho Han, Seung Ho Kang, Chong-Yun Yoon, Seok-Jin 2024-01-20T08:34:45Z 2024-01-20T08:34:45Z 2021-09-02 2014-10 0002-7820 https://pubs.kist.re.kr/handle/201004/126282 Microstructural and piezoelectric properties of 0.72Pb(Zr1-xTix)-0.28Pb(Zn0.4Ni0.6)(1/3)Nb2/3O3 (PZ(1-x)T(x)-PZNN) ceramics with 0.50 x0.55 were investigated for evaluating the possibility of their use in multilayer actuators and energy harvesters, which demand a large piezoelectric strain constant (d(33)) and a small dielectric constant (epsilon(T)(33)/epsilon(o)). The PZ(0.47)T(0.53)-PZNN ceramic with a morphotropic phase boundary (MPB) composition showed large d(33) and epsilon(T)(33)/epsilon(o) values, making it unsuitable for use in multilayer actuators and energy harvesters. However, the PZ(0.48)T(0.52)-PZNN ceramic with a rhombohedral structure showed a small epsilon(T)(33)/epsilon(o) value of 1605, yet maintained a large d(33) of 550 pC/N. Thermal stimulation did not have any significant effect on the piezoelectric properties of this specimen, except for a slight increase in the epsilon(T)(33)/epsilon(o) value upon heating the specimen at 150 degrees C for 4h. In an effort to reduce the sintering temperature, CuO was used as an additive for the ceramic. As a result, the CuO-added PZ(0.48)T(0.52)-PZNN ceramic was well sintered at 900 degrees C. In particular, the 1.0mol% CuO-added PZ(0.48)T(0.52)-PZNN ceramic exhibited a large d(33) value of 554 pC/N and a small epsilon(T)(33)/epsilon(o) value of 1620, making it highly suitable for use in multilayer actuators and energy harvesters. English WILEY MORPHOTROPIC PHASE-BOUNDARY DIELECTRIC-PROPERTIES SYSTEM DEVICES Piezoelectric Ceramics for Use in Multilayer Actuators and Energy Harvesters Article 10.1111/jace.13079 1 JOURNAL OF THE AMERICAN CERAMIC SOCIETY, v.97, no.10, pp.3157 - 3163 JOURNAL OF THE AMERICAN CERAMIC SOCIETY 97 10 3157 3163 scie scopus 000343829900021 Materials Science, Ceramics Materials Science Article MORPHOTROPIC PHASE-BOUNDARY DIELECTRIC-PROPERTIES SYSTEM DEVICES