Structure and dielectric behavior of Pb(Mg1/3Nb2/3)O3–Pb(Ni1/3Nb2/3)O3–Pb(Zn1/3Nb2/3)O3–PbTiO3 ferroelectric ceramics near the morphotropic phase boundary

2006 ◽  
Vol 54 (5) ◽  
pp. 1343-1348 ◽  
Author(s):  
Jing-Song Pan ◽  
Xiao-Wen Zhang
Keyword(s):  
Phase Boundary ◽  
Morphotropic Phase Boundary ◽  
Dielectric Behavior ◽  
Ferroelectric Ceramics

Electrical Properties of (1–x)(0.8PMN-0.2PNN)-xPT Ceramics near the Morphotropic Phase Boundary

2007 ◽  
Vol 336-338 ◽  
pp. 18-20
Author(s):  
Guo Yuan Zhou ◽  
Jin Song Pan ◽  
Xiao Wen Zhang
Keyword(s):  
Phase Boundary ◽  
Morphotropic Phase Boundary ◽  
Piezoelectric Properties ◽  
Dielectric Behavior ◽  
Dielectric Constants ◽  
Ferroelectric Ceramics ◽  
X Ray Diffraction ◽  
Precursor Method ◽  
High Dielectric ◽  
Columbite Precursor

Ferroelectric ceramics of (1x)(0.8PMN0.2PNN)xPT (x = 0.280.43) were synthesized by the columbite precursor method. Their phase structures as well as the dielectric, ferroelectric and piezoelectric properties were investigated. X-ray diffraction (XRD) results demonstrate that the morphotropic phase boundary (MPB) of this system lies in the composition range of x = 0.31–0.37. Examination of the dielectric behavior indicates that the ceramics exhibit high dielectric constants near the MPB compositions. In addition, the piezoelectric properties of the ceramics were found quite well around the MPB. The interrelated mechanism was also discussed.

Dielectric properties of lead-free BNT-based ferroelectric ceramics near the morphotropic phase boundary

2020 ◽  
Vol 256 ◽  
pp. 123639 ◽  
Author(s):  
Bi Chen ◽  
Mengshu Niu ◽  
Zhanhui Peng ◽  
Xiaoshuang Qiao ◽  
Pengfei Liang ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Phase Boundary ◽  
Morphotropic Phase Boundary ◽  
Lead Free ◽  
Ferroelectric Ceramics

Structural, thermal and dielectric properties of Pb(Mg1/3Nb2/3)1‑x TixO3 ceramics at morphotropic phase boundary

2020 ◽  
Vol 92 (1) ◽  
pp. 10902
Author(s):  
Amine Alaoui-Belghiti ◽  
Yassine Tabbai ◽  
Mourad Rkhis ◽  
Said Laasri ◽  
Houda Lifi ◽  
...  
Keyword(s):  
Phase Boundary ◽  
Morphotropic Phase Boundary ◽  
Solid State Reaction Method ◽  
Dielectric Behavior ◽  
Flow Process ◽  
Cooling Systems ◽  
One Dimensional ◽  
Different Temperatures ◽  
Physical Performances ◽  
Ppe Calorimetry

Ceramics arising from Pb(Mg1/3Nb2/3)1‑x TixO3 with composition near the morphotropic phase boundary (MPB) were prepared by the modified solid-state reaction method. The synthesized ceramics were characterized, and then the operating principles of pyroelectric and piezoelectric harvesters are reviewed. In addition, the dielectric behavior is measured to determine the dielectric constant and losses at different temperatures and frequencies. The typical behavior of a ferroelectric relaxer was observed by adding the PbTiO3 phase. The thermal properties are also analyzed by PPE calorimetry, presaging a one-dimensional heat-flow process. As a result, the dielectric and thermal behaviors of the as-prepared ceramics as well as their thermal stability are intimately linked to the PbTiO3 addition to PbMgl/3Nb2/3O3 phase. These materials exhibit good physical performances, which makes them promising candidates for pyroelectric micro-generators (PEG), cooling systems and infrared applications.

Study of the structure and dielectric relaxation behavior of Pb(Mg1/3Nb2/3)O3–PbTiO3 ferroelectric ceramics

1999 ◽  
Vol 14 (12) ◽  
pp. 4581-4586 ◽  
Author(s):  
Xiaowen Zhang ◽  
Fei Fang
Keyword(s):  
Phase Boundary ◽  
Phase Region ◽  
Dielectric Behavior ◽  
Ferroelectric Ceramics ◽  
X Ray Diffraction ◽  
Precursor Method ◽  
Two Phase ◽  
X Ray ◽  
Dielectric Relaxation Behavior ◽  
Columbite Precursor

(1–x)PMN–xPT[PMN, Pb(Mg1/3Nb2/3)O3; PT, PbTiO3] system ferroelectric ceramics with x = 0.30, 0.33, 0.35, and 0.38 were synthesized by the columbite precursor method. Their structure and dielectric behavior were investigated. X-ray diffraction results demonstrate that no two-phase region is presented, but a quasi-cubic to tetragonal phase boundary lies between x = 0.30 and 0.33. Examination of the dielectric behavior reveals that the transformation from relaxor to normal ferroelectric behavior across the morphotropic phase boundary (MPB) is successive and continuous. It is suggested that x 4 0.30 to 0.33 is the composition of MPB for the PMN–PT system. The MPB is also a boundary for the PMN–PT system to transform from relaxor to normal ferroelectrics.

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