Details

Autor(en) / Beteiligte

• Park, Hwi-Yeol
• Nam, Chan-Hee
• Seo, In-Tae
• Choi, Jae-Hong
• Nahm, Sahn
• Lee, Hyeung-Gyu
• Kim, Kwang-Jin
• Jeong, Seong-Min

Titel

Effect of MnO2 on the Piezoelectric Properties of the 0.75Pb(Zr0.47Ti0.53)O3-0.25Pb(Zn1/3Nb2/3)O3 Ceramics

Ist Teil von

• Journal of the American Ceramic Society, 2010-09, Vol.93 (9), p.2537-2540

Ort / Verlag

Malden, USA: Blackwell Publishing Inc

Erscheinungsjahr

2010

Quelle

Wiley Online Library

Beschreibungen/Notizen

• MnO2 was added to 0.75Pb(Zr0.47Ti0.53)O3–0.25Pb(Zn1/3Nb2/3)O3 (0.75PZT–0.25PZN) ceramics in order to make a high‐power piezoelectric material. The Mn4+ ion produced a defect dipole consisting of an Mn4+ ion and an oxygen vacancy that transformed the 0.75PZT–0.25PZN ceramics into hard materials. The Qm value significantly increased with the addition of MnO2 and reached a value of 1680 for the 1.5 mol% MnO2‐added 0.75PZT–0.25PZN ceramic. Moreover, this specimen exhibited a high kp of 0.53 with a ɛ3T/ɛ0 of 1518. Additionally, the 1.5 mol% MnO2‐added 0.75PZT–0.25PZN ceramics sintered at 900°C for 4 h also exhibited high piezoelectric properties of Qm=1115, kp=0.50, and ɛ3T/ɛ0=1537.