The quenching effects for depolarization temperature of (Bi0.5Na0.5)TiO3 ceramics with Mn dopants

Abstract The structure, microstructure, piezoelectric properties, ferroelectric properties and Curie temperature of (1- x )BiFeO 3 - x BaTiO 3 -Bi(Zn 0.5 Ti 0.5 )O 3 +MnO 2 +Li 2 CO 3 ceramics were investigated experimentally by improved solid-state reaction approach. The crystalline structures were examined by X-ray diffractometry. When x = 0.3, the rhombohedral and pseudocubic phases coexist in the ceramic structure. It is considered that the morphotropic phase boundary was formed here. At the same time, the piezoelectric performance d 33 , Curie temperature T C , and depolarization temperature are as high as 184 pC/N, 550°C, 530°C at x = 0.3, respectively. It is worth noting that when x = 0.24, the ceramics have a high T C = 580°C and low dielectric loss tan δ = 1.9%. These results show that the BFBT-BZT system ceramics are applicable ceramics with high piezoelectric properties in high temperature fields.

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Effects of Zr Doping on the Depolarization Temperature and the Piezoelectric Properties in (Bi0.5Na0.5)TiO3-BaTiO3 Lead-free Ceramics

Journal of the Korean Physical Society ◽

10.3938/jkps.57.1905 ◽

2010 ◽

Vol 57 (6(1)) ◽

pp. 1905-1908 ◽

Cited By ~ 7

Author(s):

Tae Kwon Song ◽

J. S. Park ◽

S. C. Lee ◽

M. H. Lee ◽

D. J. Kim ◽

...

Keyword(s):

Piezoelectric Properties ◽

Lead Free ◽

Depolarization Temperature ◽

Lead Free Ceramics

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Influence of Al2O3 nanoparticle doping on depolarization temperature, and electrical and energy harvesting properties of lead-free 0.94(Bi0.5Na0.5)TiO3–0.06BaTiO3 ceramics

RSC Advances ◽

10.1039/d0ra04866f ◽

2020 ◽

Vol 10 (53) ◽

pp. 32078-32087

Author(s):

Pharatree Jaita ◽

Supalak Manotham ◽

Gobwute Rujijanagul

Keyword(s):

Energy Harvesting ◽

Electric Field ◽

Lead Free ◽

Depolarization Temperature ◽

Research Article ◽

Al2o3 Nanoparticle ◽

Electric Field Induced Strain

In this research article, the effects of Al2O3 nanoparticles (0–1.0 mol%) on the phase, microstructure, dielectric, ferroelectric, piezoelectric, electric field-induced strain and energy harvesting of the BNT–6BT ceramic were investigated.

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Correlation between depolarization temperature and lattice distortion in quenched (Bi1/2Na1/2)TiO3-based ceramics

Applied Physics Express ◽

10.35848/1882-0786/ab8c1d ◽

2020 ◽

Vol 13 (6) ◽

pp. 061002

Author(s):

Hajime Nagata ◽

Yuka Takagi ◽

Yasuhiro Yoneda ◽

Tadashi Takenaka

Keyword(s):

Lattice Distortion ◽

Depolarization Temperature

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The Influences of NaNbO3 on the Dielectric and Structure Characteristics of (1-X) (Na0.5Bi0.5)TiO3–x NaNbO3 Ceramics

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.415-417.1064 ◽

2011 ◽

Vol 415-417 ◽

pp. 1064-1069 ◽

Cited By ~ 1

Author(s):

Chia Ching Wu ◽

Ying Hsun Lin ◽

Ping Shou Cheng ◽

Chao Chin Chan ◽

Cheng Fu Yang

Keyword(s):

Dielectric Constant ◽

Ferroelectric Properties ◽

Rhombohedral Structure ◽

X Ray Diffraction ◽

Depolarization Temperature ◽

Dielectric Characteristics ◽

X Ray ◽

Maximum Dielectric Constant ◽

Second Phases ◽

Xrd Patterns

Perovskite-based (1-x) (Na0.5Bi0.5)TiO3-x NaNbO3 [(1-x) NBT-x NN, x = 0.1, 0.2, 0.3 and 0.4] ceramics were sintered at 1080°C. Dielectric characteristics, crystalline structures, and Raman investigations were carried out on (1-x) (Na0.5Bi0.5)TiO3-x NaNbO3 ceramics. X-ray diffraction (XRD) patterns showed that NaNbO3 ceramic would form a solid solution with (Na0.5Bi0.5)TiO3 ceramic, and and unknown or second phases were not observable as well. NaNbO3 ceramic diffused into the crystalline structure of (Na0.5Bi0.5)TiO3 ceramic and (1-x) NBT-x NN ceramics still revealed a rhombohedral structure. The temperature-dielectric constant curves showed that as NN content increased, the temperature to reveal the maximum dielectric constant (Tm) was raised, the depolarization temperature (Td) was shifted to lower value, and the dielectric constant at Tm and the loss tangent at Td gradually decreased. The Raman bands at 770 and 830 cm-1 were attributed to the existence of the oxygen vacancies. In this study, the relaxor-type ferroelectric properties of NBT ceramic had been improved as NN ceramic was added.

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Piezoelectric Properties and Depolarization Temperature of NaNbO3-LiNbO3 Lead-Free Piezoelectric Ceramics

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.388.233 ◽

2008 ◽

Vol 388 ◽

pp. 233-236 ◽

Cited By ~ 5

Author(s):

Rintaro Aoyagi ◽

Makoto Iwata ◽

Masaki Maeda

Keyword(s):

Phase Transition ◽

Room Temperature ◽

Electromechanical Coupling ◽

Thermal Hysteresis ◽

Longitudinal Mode ◽

Electromechanical Coupling Factor ◽

Coupling Factor ◽

Depolarization Temperature ◽

Higher Temperature ◽

Curie Temperature Tc

Piezoelectric and dielectric properties of (LixNa1-x)NbO3 (LNN100x; x≤0.14) ceramics were investigated according to phase transition The highest electromechanical coupling factor, kp, of 0.247 was obtained for LNN12 which has a composition with a morphotropic phase boundary at room temperature. On the other hand, the coupling factor of k33 with longitudinal mode was almost constant for all compositions of x. The dielectric constant, ε r, before poling treatment exhibited a thermal hysteresis near the Curie temperature, TC, for all compositions. The depolarization temperature of LNN6 was higher than the TC before poling treatment. In addition, the peak of free permittivity, ε33 T, was shifted to higher temperature. It was considered that the phase transition was induced by the electric field during poling treatment.

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