Structure and electrical properties of (1−x) (Bi0.5 (Na0.82K0.18)0.5) TiO3–x BiAlO3 lead-free piezoelectric ceramics

Fu, Peng; Xu, Zhijun; Chu, Ruiqing; Wu, Xueyan; Li, Wei; Zhao, Ming

doi:10.1016/j.jallcom.2012.04.050

Cited by 11 publications

(5 citation statements)

References 31 publications

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“…The XRD pattern of studied samples corresponded to bismuth sodium titanate and bismuth potassium titanate numbers 36-0153 and 36-0339, respectively. This observed mixed phase well agrees with previous reported [6]. However, the phase of KNbO3 was not detected in the XRD patterns.…”

supporting

confidence: 92%

“…These BNTs have a high opportunity for replacement modified lead based perovskite materials in electronic devices [1][2][3][4]. Among the lead-free ceramics, BNT-BKT ceramic has been focused owing to the existence of the combined phase at morphotropic phase boundary (MPB) located at x = 0.16-0.20 [5,6]. It shows the enhance many properties such as a dielectric, piezoelectric, and electric-field-induced strain properties.…”

Section: Introductionmentioning

confidence: 99%

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Physical and Mechanical Properties of Bi0.5(Na0.81K0.19)0.5TiO3 Ceramic Modified by KNbO3

Inthong

Kruae-In

Thanomsiang

et al. 2019

KEM

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This research reports the physical and mechanical properties of (1-x) Bi0.5(Na0.81K0.19)0.5TiO3-xKNbO3 (x=0.00-0.06) ceramics. The Modified Bi0.5(Na0.81K0.19)0.5TiO3 ceramics were synthesized by solid state reaction technique. The mixed oxides powders were calcined at 850 °C, 4 h and sintered at 1120 °C, 2 h to form pure phase perovskite and the optimum bulk density, respectively. The phase formation of the modified ceramic samples was determined by X-ray diffraction technique. All of the modified Bi0.5(Na0.81K0.19)0.5TiO3 ceramics exhibited a single perovskite phase. The bulk densities of the modified ceramic samples were 5.41±0.27-5.75±0.28 g/cm3 using the Archimedes’ method. The microstructure was revealed by the scanning electron microscope. The rectangular-like shape was found of all studied ceramics which had the grain size between 1.31±0.02-1.56±0.03 mm. The mechanical properties were studied by both Vickers and Knoop microhardness tester. The results are discussed in term of the relation among hardness properties, Young’s modulus, and fracture toughness.

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supporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Physical and Mechanical Properties of Bi0.5(Na0.81K0.19)0.5TiO3 Ceramic Modified by KNbO3

Inthong

Kruae-In

Thanomsiang

et al. 2019

KEM

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“…), 3,[17][18][19][20][21] as well as with ABO 3 -type perovskites. [21][22][23][24][25][26][27][28][29][30] These studies suggest that the base composition and the nature of chemical modiers signicantly affect the ferroelectric and piezoelectric properties of BNT-based ceramics. Recently, codoping of impurities into A-and B-sites at the same time was found to be very effective in enhancing the electric-eldinduced strain response.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2015

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“…17) Thank to well solidsolution with lead-free Bi 0.5 (Na,K) 0.5 TiO 3 -based ceramics, Ullah et al reported the highest value of S max /E max of 391 pm/V for 5 mol.% BiAlO 3 solid solution in Bi 0.5 (Na 0.8 -K 0.2 ) 0.5 TiO 3 which resulted from transition from the coexistence of rhombohedral and tetragonal phase into pseudocubic phase. 18 21) In fact, co-modification at A-site and B-site further enhanced the S max /E max up to 579 pm/V obtained in lead-free 0.99Bi 0.5 (Na 0.78 K 0.22 ) 0.5 TiO 3 0.01(Bi 0.5 -La 0.5 )AlO 3 composition, resulting from distorted tetragonal structure. 22) These results were important to point out that: i) the mechanism in enhancement of S max /E max values was unclear and ii) the modification of A-site was more sensitive to S max /E max values than that of B-site.…”

Section: )mentioning

confidence: 91%

Microstructural and Ferroelectric Properties of Bi0.5(Na,K)0.5TiO3-Based Modified by Bi0.5Li0.5TiO3 Lead-Free Piezoelectric Ceramics

et al. 2015

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Lead-free ceramics of composition (0.97 ¹ x)Bi 0.5 Na 0.4 K 0.1 TiO 3 -0.03BiAlO 3 -xBi 0.5 Li 0.5 TiO 3 (BNKTBA-xBLTO) were synthesized using solid state technique. The strong enhancements in ferroelectric and electric-field-induced strain were obtained. The electric-field-induced strain values were increased from 410 pm/V to 688 pm/V for 6 mol% BLTO-added which results from the phase transition from rhombohedral to tetragonal structure. The maximum spontaneous polarization increased from 26.5 µC/cm 2 to 30.8 µC/cm 2 for 4 mol% BLTO solid solution in BNKTBA and then decreased as BLTO was further added. We expect that this work could be helpful for further understanding the original enhancement in electrical field-induced strain in lead-free BNKT-based ceramics due to comparison between A-and B-site co-modifications.

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Structure and electrical properties of (1−x) (Bi0.5 (Na0.82K0.18)0.5) TiO3–x BiAlO3 lead-free piezoelectric ceramics

Cited by 11 publications

References 31 publications

Physical and Mechanical Properties of Bi<sub>0</sub><sub>.5</sub>(Na<sub>0</sub><sub>.81</sub>K<sub>0</sub><sub>.19</sub>)<sub>0</sub><sub>.5</sub>TiO<sub>3 </sub>Ceramic Modified by KNbO<sub>3</sub>

Physical and Mechanical Properties of Bi<sub>0</sub><sub>.5</sub>(Na<sub>0</sub><sub>.81</sub>K<sub>0</sub><sub>.19</sub>)<sub>0</sub><sub>.5</sub>TiO<sub>3 </sub>Ceramic Modified by KNbO<sub>3</sub>

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

Microstructural and Ferroelectric Properties of Bi<sub>0.5</sub>(Na,K)<sub>0.5</sub>TiO<sub>3</sub>-Based Modified by Bi<sub>0.5</sub>Li<sub>0.5</sub>TiO<sub>3</sub> Lead-Free Piezoelectric Ceramics

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Structure and electrical properties of (1−x) (Bi0.5 (Na0.82K0.18)0.5) TiO3–x BiAlO3 lead-free piezoelectric ceramics

Cited by 11 publications

References 31 publications

Physical and Mechanical Properties of Bi<sub>0</sub><sub>.5</sub>(Na<sub>0</sub><sub>.81</sub>K<sub>0</sub><sub>.19</sub>)<sub>0</sub><sub>.5</sub>TiO<sub>3 </sub>Ceramic Modified by KNbO<sub>3</sub>

Physical and Mechanical Properties of Bi<sub>0</sub><sub>.5</sub>(Na<sub>0</sub><sub>.81</sub>K<sub>0</sub><sub>.19</sub>)<sub>0</sub><sub>.5</sub>TiO<sub>3 </sub>Ceramic Modified by KNbO<sub>3</sub>

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

Microstructural and Ferroelectric Properties of Bi<sub>0.5</sub>(Na,K)<sub>0.5</sub>TiO<sub>3</sub>-Based Modified by Bi<sub>0.5</sub>Li<sub>0.5</sub>TiO<sub>3</sub> Lead-Free Piezoelectric Ceramics

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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