Preparation and properties of (Bi1/2Na1/2)TiO3–Ba(Ti,Zr)O3 lead-free piezoelectric ceramics

Peng, Chun-E; Li, Jing‐Feng; Gong, Wen

doi:10.1016/j.matlet.2005.01.026

Cited by 148 publications

(57 citation statements)

References 16 publications

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“…Besides, high leakage currents and high coercive field (∼73 kV/cm) negatively affect the poling process and polarization saturation is difficult to achieve in conventionally fabricated BNT samples. In addition, BNT exhibits a low depolarization temperature ∼200 • C. Several workers [3][4][5][6][7][8][9][10][11][12][13][14][15][16] have investigated the electrical behavior, proposed more accurate measurement of the phase transition temperatures of BNT-based solid solutions, and determined their morphotropic phase boundary (MPB) compositions in order to improve dielectric and piezoelectric properties of BNT ceramic. Among these solid solutions, (Bi 0.5 Na 0.5 ) 1−x Ba x TiO 3 (BNBTx) has attracted an enormous global attention owing to the existence of a rhombohedraltetragonal morphotropic phase boundary (MPB) near x = 0.06 -0.08 in the system.…”

Section: Introductionmentioning

confidence: 99%

Electrical Properties and AC Conductivity of (Bi_0.5Na_0.5)_0.94Ba_0.06TiO₃ Ceramic

et al. 2012

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Lead-free perovskite (Bi 0.5 Na 0.5 ) 0.94 Ba 0.06 TiO 3 (BNBT06) was prepared by conventional ceramic fabrication technique at 1160 • C/3h in air atmosphere. The crystal structure, microstructure, dielectric, polarization, piezoelectric properties, and ac conductivity of the sample were studied. X-ray diffraction data confirmed the formation of a single phase tetragonal unit cell. Williamson-Hall plot was used to calculate the lattice strain and the apparent particle size. The experimental relative density of BNBT06 was found to be ∼96-97% of the theoretical one with an average grain size ∼4 μm. Room temperature dielectric constant and loss factor at 1 kHz were found to be equal to 781 and 0.085, respectively. Longitudinal piezoelectric charge coefficient of the poled sample under 2.5 kV/mm at 80 • C in silicone bath was found to be equal to 124 pC/N. Complex impedance and electric modulus spectroscopic analyses showed the dielectric relaxation in the material to be of non-Debye type. The Nyquist plots and conductivity studies showed the NTCR character of BNBT06. The correlated barrier hopping model (CBHM) as well as jump relaxation model (JRM) was found to successfully explain the mechanism of charge transport in BNBT06. The ac conductivity data were used to evaluate the minimum hopping length, apparent activation energy, and density of states at Fermi level.

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Section: Introductionmentioning

confidence: 99%

Electrical Properties and AC Conductivity of (Bi_0.5Na_0.5)_0.94Ba_0.06TiO₃ Ceramic

et al. 2012

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“…But Bi ion is highly volatile at high temperature above 1130℃ during sintering and making this material difficult to pole due to its high conductivity [3]. The solution to this problem has been found by many researchers, who were able to modify BNT crystal by the substitution of other A and B-site cations, such as in (Bi 0.5 Na 0.5 ) (1-1.5x) La x TiO 3 ; (BNLT) [4], BNT-KNbO 3 (KN) [5], and BNT-Ba(Ti,Zr)O 3 [6] solidsolution ceramic system. The piezoelectric properties of these ceramics were significantly improved.…”

Section: Introductionmentioning

confidence: 99%

Effect of Ba2+ in BNT ceramics on dielectric and conductivity properties

Rao¹,

Rajulu²,

Tilak³

et al. 2010

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“…11,12 There are very few reports on the NBT-based solid solutions with the substitution of zirconium for titanium, in the literature (see, for example, Refs. [13][14][15][16][17]. Nonetheless, it has been expected that in this case, zirconium substitutions will also stabilize the AFE state.…”

Section: Results Of the Solid-state Reactions Studymentioning

confidence: 99%

B-site substituted solid solutions on the base of sodium-bismuth titanate

et al. 2016

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The paper presents results of studies of the formation of phases during the solid-state synthesis in the [(Na 0:5 Bi 0:5 Þ 0:80 Ba 0:20 ðTi 1Ày B y ÞO 3 system of solid solutions with B-site substitutions. The substitutions by zirconium, tin and ion complexes (In 0:5 Nb 0:5 Þ and (Fe 0:5 Nb 0:5 Þ have been studied. It has been found that the synthesis is a multi-step process associated with the formation of a number of intermediate phases (depending on the compositions and calcination temperatures). Single-phase solid solutions have been produced at the calcination temperatures in the interval 1000-1100 C. An increase in the substituting ions concentration leads to a linear increase of the crystal cell size. At the same time, the tolerance factor gets reduced boosting the stability of the antiferroelectric phase as compared to that of the ferroelectric phase.

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Preparation and properties of (Bi1/2Na1/2)TiO3–Ba(Ti,Zr)O3 lead-free piezoelectric ceramics

Cited by 148 publications

References 16 publications

Electrical Properties and AC Conductivity of (Bi_0.5Na_0.5)_0.94Ba_0.06TiO₃ Ceramic

Electrical Properties and AC Conductivity of (Bi_0.5Na_0.5)_0.94Ba_0.06TiO₃ Ceramic

Effect of Ba2+ in BNT ceramics on dielectric and conductivity properties

B-site substituted solid solutions on the base of sodium-bismuth titanate

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Preparation and properties of (Bi1/2Na1/2)TiO3–Ba(Ti,Zr)O3 lead-free piezoelectric ceramics

Cited by 148 publications

References 16 publications

Electrical Properties and AC Conductivity of (Bi0.5Na0.5)0.94Ba0.06TiO3 Ceramic

Electrical Properties and AC Conductivity of (Bi0.5Na0.5)0.94Ba0.06TiO3 Ceramic

Effect of Ba2+ in BNT ceramics on dielectric and conductivity properties

B-site substituted solid solutions on the base of sodium-bismuth titanate

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Product

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About

Electrical Properties and AC Conductivity of (Bi_0.5Na_0.5)_0.94Ba_0.06TiO₃ Ceramic

Electrical Properties and AC Conductivity of (Bi_0.5Na_0.5)_0.94Ba_0.06TiO₃ Ceramic