Open AccessDielectric and ferroelectric properties of CuO-doped lead magnesium niobate-based relaxor ferroelectric ceramics
Author(s) -
Li Jin,
Jing Pang,
Yunyao Huang,
Wenting Luo,
Xu Lü,
Xiaoyong Wei
Publication year - 2019
Publication title -
journal of advanced dielectrics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.38
H-Index - 13
eISSN - 2010-135X
pISSN - 2010-1368
DOI - 10.1142/s2010135x19500334
Subject(s) - dielectric , materials science , ferroelectricity , electrostriction , ceramic , sintering , condensed matter physics , hysteresis , relaxation (psychology) , doping , mineralogy , thermodynamics , physics , composite material , optoelectronics , chemistry , psychology , social psychology , piezoelectricity
In this work, we report the dielectric and ferroelectric properties of CuO-doped ([Formula: see text])[0.5573Pb(Mg[Formula: see text]Nb[Formula: see text])O 3 -0.4427PbTiO 3 ]-[Formula: see text]Ba(Zn[Formula: see text]Nb[Formula: see text]O 3 (PMNT-[Formula: see text]BZN) relaxor ferrielectric ceramic samples with [Formula: see text], 0.1925, 02125 and 0.2325, which were fabricated by a conventional solid-state reaction method. By introducing the CuO into PMNT-[Formula: see text]BZN, the sintering temperature of this system is drastically lowered from 1280 ∘ C to 1120 ∘ C. The second pyrochlore phase, which is often generated during sintering at high temperature, is also inhibited. Meanwhile, broad dielectric peaks with strong dielectric relaxation characteristics are observed from [Formula: see text]C to 100 ∘ C. Slim and slanted [Formula: see text]-[Formula: see text] hysteresis loops and purely electrostrictive strains with V-shape are obtained simultaneously in studied compositions from 30 ∘ C to 150 ∘ C. These results suggest that CuO could effectively lower the sintering temperature while maintaining the dielectric and ferroelectric properties of PMNT-[Formula: see text]BZN relaxor ferroelectric ceramics.