Orthorhombic-pseudocubic phase transition and piezoelectric properties of (Na0.5 K0.5 )(Nb1−x Sb x )-SrZrO3 ceramics

2017 ◽  
Vol 100 (10) ◽  
pp. 4827-4835 ◽  
Author(s):  
Ku-Tak Lee ◽  
Dae-Hyeon Kim ◽  
Jong-Seong Park ◽  
Tae-Gon Lee ◽  
Sung-Hoon Cho ◽  
...  
Keyword(s):  
Phase Transition ◽  
Piezoelectric Properties ◽  
Pseudocubic Phase

Phase transition, dielectric and piezoelectric properties of Li K1−NbO3

2015 ◽  
Vol 621 ◽  
pp. 256-262 ◽  
Author(s):  
R. Machado ◽  
A. Di Loreto ◽  
A. Frattini ◽  
M. Sepliarsky ◽  
O. de Sanctis ◽  
...  
Keyword(s):  
Phase Transition ◽  
Piezoelectric Properties ◽  
Dielectric And Piezoelectric Properties

Phase transition and piezoelectric properties of (1 − x)K0.5Na0.5NbO3–xLiSbO3 ceramics by hydrothermal powders

2014 ◽  
Vol 25 (5) ◽  
pp. 2348-2354 ◽  
Author(s):  
Wenlong Liu ◽  
Guoqiang Tan ◽  
Peng Xiong ◽  
Xu Xue ◽  
Hangfei Hao ◽  
...  
Keyword(s):  
Phase Transition ◽  
Piezoelectric Properties

scholarly journals Поведение керамических твердых растворов 33PbYb-=SUB=-1/2-=/SUB=-Nb-=SUB=-1/2-=/SUB=-O-=SUB=-3-=/SUB=--22PbZrO-=SUB=-3-=/SUB=--45PbTiO-=SUB=-3-=/SUB=- в электрическом поле

2020 ◽  
Vol 46 (6) ◽  
pp. 31
Author(s):  
Л.С. Камзина ◽  
G. Li
Keyword(s):  
Phase Transition ◽  
Dielectric Constant ◽  
Electric Field ◽  
Electric Fields ◽  
Dielectric Parameters ◽  
Morphotropic Phase Transition ◽  
Temperature Dependences ◽  
Pseudocubic Phase

The temperature dependences of the dielectric parameters were studied, as well as the changes in the dielectric constant with time in ceramic 33PbYb1 / 2Nb1 / 2O3-22PbZrO3-45 PbTiO3 samples in electric fields (0 <E <8 kV / cm). It is shown that in the phase existing below the temperature of the morphotropic phase transition, in addition to the rhombohedral and tetragonal phases, a small fraction of the relaxor pseudocubic phase is present. It was found that, unlike other relaxors, the dielectric constant practically does not change with time when an electric field is applied in the phase below the temperature of the morphotropic phase transition. Possible reasons for this behavior are discussed.

Piezoelectric Properties and Phase Transition behaviors of (Bi1/2Na1/2)1- xCaxTiO3Ceramics

2008 ◽  
Vol 45 (5) ◽  
pp. 263-267 ◽  
Author(s):  
Yong-Hyun Lee ◽  
Jeong-Ho Cho ◽  
Byung-Ik Kim ◽  
Duck-Kyun Choi
Keyword(s):  
Phase Transition ◽  
Piezoelectric Properties

scholarly journals Fabrication of piezoelectric poly(l-lactic acid)/BaTiO3 fibre by the melt-spinning process

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Hyun Ju Oh ◽  
Do-Kun Kim ◽  
Young Chan Choi ◽  
Seung-Ju Lim ◽  
Jae Bum Jeong ◽  
...  
Keyword(s):  
Phase Transition ◽  
Lactic Acid ◽  
Crystalline Phase ◽  
Melt Spinning ◽  
Piezoelectric Properties ◽  
Polymeric Materials ◽  
Processing Conditions ◽  
Post Processing ◽  
Scanning Calorimetry ◽  
Spinning Process

Abstract Poly(l-lactic acid) (PLLA) based piezoelectric polymers are gradually becoming the substitute for the conventional piezoelectric ceramic and polymeric materials due to their low cost and biodegradable, non-toxic, piezoelectric and non-pyroelectric nature. To improve the piezoelectric properties of melt-spun poly(l-lactic acid) (PLLA)/BaTiO3, we optimized the post-processing conditions to increase the proportion of the β crystalline phase. The α → β phase transition behaviour was determined by two-dimensional wide-angle x-ray diffraction and differential scanning calorimetry. The piezoelectric properties of PLLA/BaTiO3 fibres were characterised in their yarn and textile form through a tapping method. From these results, we confirmed that the crystalline phase transition of PLLA/BaTiO3 fibres was significantly enhanced under the optimised post-processing conditions at a draw ratio of 3 and temperature of 120 °C during the melt-spinning process. The results indicated that PLLA/BaTiO3 fibres could be a one of the material for organic-based piezoelectric sensors for application in textile-based wearable piezoelectric devices.

Phase transition and piezoelectric properties of alkali niobate ceramics through composition tuning

RSC Advances ◽  
2015 ◽  
Vol 5 (76) ◽  
pp. 61989-61997 ◽  
Author(s):  
Yuanyu Wang ◽  
Nuoxin Xu ◽  
Qilong Zhang ◽  
Hui Yang
Keyword(s):  
Phase Transition ◽  
Phase Boundary ◽  
Piezoelectric Properties ◽  
Lead Free ◽  
T Phase

(1 − x)(K0.40Na0.60)(Nb0.95Sb0.05)O3–x(Bi0.5K0.5)HfO3 lead-free piezoceramics was designed. R–O–T phase boundary has been successfully achieved, which can remarkably enhance piezoelectric properties.

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