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Effect of MnO 2 on the Piezoelectric Properties of the 0.75Pb(Zr 0.47 Ti 0.53 )O 3 –0.25Pb(Zn 1/3 Nb 2/3 )O 3 Ceramics
Author(s) -
Park HwiYeol,
Nam ChanHee,
Seo InTae,
Choi JaeHong,
Nahm Sahn,
Lee HyeungGyu,
Kim KwangJin,
Jeong SeongMin
Publication year - 2010
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2010.03888.x
Subject(s) - materials science , ceramic , piezoelectricity , analytical chemistry (journal) , vacancy defect , ion , mineralogy , metallurgy , crystallography , chemistry , composite material , organic chemistry , chromatography
MnO 2 was added to 0.75Pb(Zr 0.47 Ti 0.53 )O 3 –0.25Pb(Zn 1/3 Nb 2/3 )O 3 (0.75PZT–0.25PZN) ceramics in order to make a high‐power piezoelectric material. The Mn 4+ ion produced a defect dipole consisting of an Mn 4+ ion and an oxygen vacancy that transformed the 0.75PZT–0.25PZN ceramics into hard materials. The Q m value significantly increased with the addition of MnO 2 and reached a value of 1680 for the 1.5 mol% MnO 2 ‐added 0.75PZT–0.25PZN ceramic. Moreover, this specimen exhibited a high k p of 0.53 with a ɛ 3 T /ɛ 0 of 1518. Additionally, the 1.5 mol% MnO 2 ‐added 0.75PZT–0.25PZN ceramics sintered at 900°C for 4 h also exhibited high piezoelectric properties of Q m =1115, k p =0.50, and ɛ 3 T /ɛ 0 =1537.