Structure–property relationship in lead-free A- and B-site co-doped Bi0.5(Na0.84K0.16)0.5TiO3–SrTiO3incipient piezoceramics

Malik, Rizwan Ahmed; Hussain, Ali; Zaman, Abid; Maqbool, Adnan; Rahman, Jamil Ur; Song, Tae Kwon; Kim, Won-Jeong; Kim, Myong‐Ho

doi:10.1039/c5ra19107f

Cited by 66 publications

(22 citation statements)

References 42 publications

(68 reference statements)

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“…2. The obtained data showed that there were 4 main regions in the spectrum, and this information agrees with many previous reports [18][19][20]. The 4 main regions in the Raman data are as follows:…”

Section: Resultssupporting

confidence: 89%

“…(2) the 260 cm −1 mode is related to Ti−O vibrations. Furthermore, this mode becomes broader and starts splitting into two bands with increasing the additive content, and this may be due to the co-occupancy of different cations (Ti/Ta, Fe) with different sizes at the B-site that results in the distortion of the unit cell [18]; (3) the 450-700 cm −1 region hosts modes that correspond to the vibration of the TiO 6 octahedra. In this region, there is an overlapping band which was slightly separated into two distinct bands for the samples containing higher amount of additive, which demonstrated particular phonon behavior in the structural evolution and a phase mixture; and (4) the high-frequency region above 700 cm −1 feature modes can correspond to A 1 (longitudinal optical) and E (longitudinal optical) overlapping band [19,20], respectively.…”

Section: Resultsmentioning

confidence: 99%

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Effect of barium iron tantalate incorporation on mechanical, electrical, and magnetocapacitance properties of modified bismuth sodium potassium titanate ceramics

Jaita¹,

Sanjoom²,

Lertcumfu³

et al. 2020

ScienceAsia

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In this research, the (1−x)(BNKT-BST)-xBFTa ceramics were fabricated via a solid-state mixed oxide method and sintered at the temperature of 1125°C for 2 h dwell time in order to obtain dense ceramics. The XRD and Raman data revealed the coexisting rhombohedral and tetragonal phases for all samples. The density increased with increasing the additive content, which resulted in the improvements of mechanical and dielectric properties. The maximum dielectric (r = 1799) and mechanical properties (H V = 6.30 GPa, H K = 5.30 GPa, E = 97 GPa and K IC = 1.95 MPa.m 1/2) were observed. The leakage current density (J) increased with increasing amount of the additive at high electric fields of 30 kV/cm while the resistivity (ρ) was also found to decrease with the additive. The magnetocapacitance (-MC%) value also increased with increasing of the additive. The obtained results suggested that the additive not only enhanced the mechanical but also improved electrical properties of the studied samples.

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Section: Resultssupporting

confidence: 89%

Section: Resultsmentioning

confidence: 99%

Effect of barium iron tantalate incorporation on mechanical, electrical, and magnetocapacitance properties of modified bismuth sodium potassium titanate ceramics

Jaita¹,

Sanjoom²,

Lertcumfu³

et al. 2020

ScienceAsia

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“…The TiO 6 octahedra vibration in the range of 450 -655 cm −1 was also separated into three distinct bands in the ceramics (three overlapping bands). This also correlated well with the XRD analysis which indicated that the crystal structure of the leadfree (1-x)BNKT-xBT ceramics transformed from the mixed rhombohedral-tetragonal (for the x = 0 ceramic) into the tetragonal-rich phase (for the x = 0.15 ceramic) [36,37]. Figure 3 shows the FE-SEM micrographs with as sintered surfaces mode of the (1-x)BNKT-xBT ceramics (where x = 0 -0.15).…”

Section: Phase Evolution Raman Analysis and Microstructuresupporting

confidence: 82%

Enhanced electric field-induced strain and electrostrictive response of lead-free BaTiO₃-modified Bi_0.5(Na_0.80K_0.20)_0.5TiO₃ piezoelectric ceramics

Jaita

Jarupoom

2021

Journal of Asian Ceramic Societies

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“…(1 -x)(BNT-BT)-xNT (x = 0.01, 0.03, 0.05, 0.10, 0.15) ceramic samples were prepared by traditional solid-state reaction method [8,[24][25][26]. First, the raw powders Bi 2 O 3 (purity 99.0%), Na 2 CO 3 (purity 99.8%), TiO 2 (purity 98.5%), BaCO 3 (purity 99.0%) and Ta 2 O 5 (purity 99.99%) were mixed according to the stoichiometric Where σ 0 is the pre-exponential factor, E a is the activation energy of conduction, k B is the Boltzman constant, 23 1.38 10 / K B k J − = × .…”

Section: Methodsmentioning

confidence: 99%

Structure and electrical properties of lead-free Bi_0.5Na_0.5TiO₃-based ceramics for energy-storage applications

et al. 2016

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optimum energy-storage properties were obtained in 0.90(BNT-BT)-0.10NT with energy-storage density of 1.2 J/cm 3 and energy-storage efficiency of 74.8% at 10 kV/mm. The results demonstrate that (1 -x)(BNT-BT)-xNT ceramics are promising candidate for high-temperature energy-storage application. IntroductionCapacitors play an important role in energy-storage system. Compared to batteries, capacitors possess faster charge-discharge time and higher power density [1,2]. However, the energy that capacitor dielectrics can store is much less than fuel cells or lithium ion batteries [3]. Thus, the development of new capacitor materials with high energy-storage capacity is a challenge for researchers. Additionally, since electronic equipment is often exposed to extreme temperatures in industrial applications, such as space exploration and deep oil / gas well drilling [4,5], the temperature reliability of capacitor materials is also very important. Bi 0.5 Na 0.5 TiO 3 (BNT) based ceramics have been actively studied for energy-storage application in recent years [6-10]. Among the reported systems, (1x)Bi 0.5 Na 0.5 TiO 3 -xBaTiO 3 (BNT-BT) binary solid solution at the morphotropic phase boundary (MPB, 0.06 ≤ x ≤ 0.10)[11] is a promising candidate for high-temperature energy-storage capacitors. On the one hand, the existence of double dielectric anomalies over the studied temperature range can help to improve the temperature stability of the dielectric properties. On the other hand, BNT-BT shows large maximum polarization, which is favorable for obtaining high energy-storage density. Modifications of BNT-based high-temperature energy-storage ceramics focus on expanding the temperature range with stable permittivity, as well as improving their energy-storage density and efficiency. Niobates are the most widely reported members to modify the dielectric and ferroelectric properties of BNT-based ceramics, such as NaNbO 3 [12, 13], KNbO 3 [14, 15], (Li, Ag)NbO 3 [16], Na 0.5 K 0.5 NbO 3 [17-20], and (Na, Bi)NbO 3 [21]. Tantalum and niobium belong to same family in the periodic table of elements. According to J. König [22] and M. Spreitzer [23], tantalate addition can significantly broaden the dielectric anomaly of BNT ceramics. However, the exact dielectric temperature stability has not been reported, neither has the effect of tantalate on the ferroelectric properties.To explore the potential use of tantalate modified BNT-based ceramics for temperature-stable energy-storage application, a new system based on (1x)(0.92Bi 0.5 Na 0.5 TiO 3 -0.08BaTiO 3 )-xNaTaO 3 ((1 -x)(BNT-BT)-xNT) ternary solid solution was prepared in this work. The effects of NT on the structure, dielectric stability, electrical properties, and energy-storage properties of the system were comprehensively investigated. Experimental Procedure(1 -x)(BNT-BT)-xNT (x = 0.01, 0.03, 0.05, 0.10, 0.15) ceramic samples were prepared by traditional solid-state reaction method [8,[24][25][26]. First, the raw powders Bi 2 O 3 (purity 99.0%), Na 2 CO 3 (purity 99.8%), TiO 2 (p...

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Structure–property relationship in lead-free A- and B-site co-doped Bi_0.5(Na_0.84K_0.16)_0.5TiO₃–SrTiO₃incipient piezoceramics

Abstract: A phase diagram of A- and B-site co-substituted lead-free incipient piezoceramics is schematically constructed on the basis of crystal structure and electromechanical, dielectric and piezoelectric properties.

Cited by 66 publications

References 42 publications

Effect of barium iron tantalate incorporation on mechanical, electrical, and magnetocapacitance properties of modified bismuth sodium potassium titanate ceramics

Effect of barium iron tantalate incorporation on mechanical, electrical, and magnetocapacitance properties of modified bismuth sodium potassium titanate ceramics

Enhanced electric field-induced strain and electrostrictive response of lead-free BaTiO₃-modified Bi_0.5(Na_0.80K_0.20)_0.5TiO₃ piezoelectric ceramics

Structure and electrical properties of lead-free Bi_0.5Na_0.5TiO₃-based ceramics for energy-storage applications

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Structure–property relationship in lead-free A- and B-site co-doped Bi0.5(Na0.84K0.16)0.5TiO3–SrTiO3incipient piezoceramics

Abstract: A phase diagram of A- and B-site co-substituted lead-free incipient piezoceramics is schematically constructed on the basis of crystal structure and electromechanical, dielectric and piezoelectric properties.

Cited by 66 publications

References 42 publications

Effect of barium iron tantalate incorporation on mechanical, electrical, and magnetocapacitance properties of modified bismuth sodium potassium titanate ceramics

Effect of barium iron tantalate incorporation on mechanical, electrical, and magnetocapacitance properties of modified bismuth sodium potassium titanate ceramics

Enhanced electric field-induced strain and electrostrictive response of lead-free BaTiO3-modified Bi0.5(Na0.80K0.20)0.5TiO3 piezoelectric ceramics

Structure and electrical properties of lead-free Bi0.5Na0.5TiO3-based ceramics for energy-storage applications

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Product

Resources

About

Structure–property relationship in lead-free A- and B-site co-doped Bi_0.5(Na_0.84K_0.16)_0.5TiO₃–SrTiO₃incipient piezoceramics

Enhanced electric field-induced strain and electrostrictive response of lead-free BaTiO₃-modified Bi_0.5(Na_0.80K_0.20)_0.5TiO₃ piezoelectric ceramics

Structure and electrical properties of lead-free Bi_0.5Na_0.5TiO₃-based ceramics for energy-storage applications