Journal ArticleDOI
Processing and Electromechanical Properties of (Bi0.5Na0.5)(1−1.5x)LaxTiO3 Ceramics
Aree Herabut,Ahmad Safari +1 more
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TLDR
In this paper, Bismuth sodium titanate (Bi 0.5Na0.5TiO3, BNT) with 0.6 at.% lanthanum was prepared by the conventional mixed oxide method.Abstract:
Bismuth sodium titanate (Bi0.5Na0.5TiO3, BNT) with 0–6 at.% lanthanum was prepared by the conventional mixed oxide method. Each composition was calcined at 800–900°C for 2–5 h to form a pure perovskite phase. Green pellets were sintered at 1050–1150°C for 1–4 h to obtain dense ceramics with at least 95% of theoretical density. X–ray diffraction (XRD) showed phase distortion as lanthanum was added to this system. Meanwhile, a small amount of La was found to affect the grain size and had an influence on the poling conditions and electrical properties. The BNT–based composition with 1 at.% La doping provided a dielectric constant (K) of 560, a piezoelectric charge constant (d33) of 92 pC/N, and a hydrostatic piezoelectric coefficient (dh) of 72 pC/N.read more
Citations
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Potassium-sodium niobate lead-free piezoelectric materials: past, present, and future of phase boundaries.
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Review: environmental friendly lead-free piezoelectric materials
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Recent development in lead-free perovskite piezoelectric bulk materials
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Electrical properties of Na1/2Bi1/2TiO3–BaTiO3 ceramics
TL;DR: In this paper, the piezoelectric properties of (1− x ) Na 1/2 Bi1/2 TiO 3 x BaTiO 3 (x = 0.02, 0.04, 0., 0.06,0.08, 0,0,0.,0.10) ceramics with perovskite structure were studied.
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Progress in high-strain perovskite piezoelectric ceramics
TL;DR: A comprehensive review of the latest developments of the various types of perovskite piezoelectric ceramic systems is presented in this article, with special attention given to three promising families of lead-free perovsite ferroelectrics: the barium titanate, alkaline niobate and bismuth pervskites.
References
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Journal ArticleDOI
Ferroelectric and antiferroelectric properties of (Na 0.5Bi 0.5)TiO3-SrTiO3 solid solution ceramics
Koichiro Sakata,Yoichiro Masuda +1 more
TL;DR: In this article, the phase transition temperature and Curie point decrease monotonically with increasing SrTiO3 concentration, and an intermediate antiferroelectric phase has been observed in the composition range of 0 ⩽ χ⩽ 0.5 of this system.
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X-ray study of phase transitions in efrroelectric Na0.5Bi0.5TiO3
TL;DR: In this paper, the temperature dependence of the lattice constant in Na0.5Bi 0.5TiO3 single crystal was studied by means of X-ray diffraction and two structural phase transitions were found in the temperature range 293-920 K.
Journal ArticleDOI
Piezoelectric properties of (Bi1/2Na1/2)TiO3-based ceramics
TL;DR: In this paper, a rhombohedral (Fα)-tetragonal (Fβ) morphotropic phase boundary (MPB) is shown to exist at x = 0.13 by X-ray diffraction data.
Journal ArticleDOI
Peculiarities of phase transitions in sodium-bismuth titanate
TL;DR: In this paper, the ferroelectric properties of (Na0,5Bi 0,5,5TiO3) single crystals are studied and it is found that some physical characteristics possess a large temperature hysteresis in the temperature range 200 − 300°C.
Journal ArticleDOI
Dielectric, piezoelectric and pyroelectric properties of (BiNa)1/2TiO3- based ceramics
Tadashi Takenaka,Koichiro Sakata +1 more
TL;DR: In this paper, a bismuth sodium titanate, (BiNa)1/2 TiO3 (BNT)-based solid solutions were studied for their dielectric, piezoelectric and pyroelectric properties.