Fabrication and Electrical Characterization of Lead-Free BiFe0.91(Mn0.47Ti0.53)0.09O3–BaTiO3 Ceramics

The (1-x)BiFe0.91(Mn0.47Ti0.53)0.09O3–xBaTiO3 (BFMT–BT) lead-free ceramics have been fabricated by the conventional solid-state reaction method. The phase structure of BFMT-BT investigated by X–ray diffraction shows a single perovskite phase. Although 20% mol of Bi2O3 was added to the raw materials, the evaporation of Bi3+ ions during calcining and sintering processes is from 20 to 30% wt. relative to other elements. The effect of BaTiO3content on electrical properties of BFMT-BT ceramic has been investigated. At BaTiO3concentration of 0.3 mol and the sintering temperature of 950oC, electrical properties of ceramics are best with the density (r) of 7.6 g/cm3, the electromechanical coupling factor (kp) of 0.28, the dielectric constant (εr) of 1028, and the difference in polarizations at zero field is about 10.5 mC/cm2.

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Fabrication and Electrical Characterization of Lead-Free BiFe0.91(Mn0.47Ti0.53)0.09O3–BaTiO3 Ceramics

HUE UNIVERSITY JOURNAL OF SCIENCE NATURAL SCIENCE ◽

10.26459/hueuni-jns.v129i1b.5746 ◽

2020 ◽

Vol 129 (1B) ◽

pp. 63-70

Author(s):

Nguyen Truong Tho

Keyword(s):

Electrical Properties ◽

Electromechanical Coupling ◽

Raw Materials ◽

Perovskite Phase ◽

Electrical Characterization ◽

Electromechanical Coupling Factor ◽

Solid State Reaction Method ◽

Lead Free ◽

Zero Field ◽

Conventional Solid State Reaction

The (1-x)BiFe0.91(Mn0.47Ti0.53)0.09O3–xBaTiO3 (BFMT–BT) lead-free ceramics have been fabricated by the conventional solid-state reaction method. The phase structure of BFMT-BT investigated by X–ray diffraction shows a single perovskite phase. Although 20% mol of Bi2O3 was added to the raw materials, the evaporation of Bi3+ ions during calcining and sintering processes is from 20 to 30% wt. relative to other elements. The effect of BaTiO3content on electrical properties of BFMT-BT ceramic has been investigated. At BaTiO3concentration of 0.3 mol and the sintering temperature of 950oC, electrical properties of ceramics are best with the density (r) of 7.6 g/cm3, the electromechanical coupling factor (kp) of 0.28, the dielectric constant (εr) of 1028, and the difference in polarizations at zero field is about 10.5 mC/cm2.

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Effect of Bi2O3 content on the microstructure and electrical properties of SrBi2Nb2O9 piezoelectric ceramics

RSC Advances ◽

10.1039/c8ra01640b ◽

2018 ◽

Vol 8 (28) ◽

pp. 15613-15620 ◽

Cited By ~ 1

Author(s):

Xiaochun He ◽

Ruiqing Chu ◽

Zhijun Xu ◽

Zhongran Yao ◽

Jigong Hao

Keyword(s):

Solid State ◽

Electrical Properties ◽

Solid State Reaction ◽

Solid State Reaction Method ◽

Lead Free ◽

Molar Ratio ◽

Conventional Solid State Reaction ◽

Reaction Method ◽

Lead Free Ceramics ◽

Bi2o3 Content

Lead-free ceramics, SrBi2Nb2O9–xBi2O3 (SBN–xBi), with different Bi contents of which the molar ratio, n(Sr) : n(Bi) : n(Nb), is 1 : 2(1 + x/2) : 2 (x = −0.05, 0.0, 0.05, 0.10), were prepared by conventional solid-state reaction method.

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(1-x)(K0.475Na0.475Li0.05)(Nb0.975Sb0.025)O3-xBiFeO3 Lead-Free Piezoelectric Ceramics with CuO Sintering Aid

Materials Science Forum ◽

10.4028/www.scientific.net/msf.687.228 ◽

2011 ◽

Vol 687 ◽

pp. 228-232

Author(s):

Yong Jie Zhao ◽

Yu Zhen Zhao ◽

Rong Xia Huang ◽

Rong Zheng Liu ◽

He Ping Zhou

Keyword(s):

Electrical Properties ◽

Electromechanical Coupling ◽

Piezoelectric Materials ◽

Piezoelectric Ceramics ◽

Electromechanical Coupling Factor ◽

Coupling Factor ◽

Mechanical Quality Factor ◽

Lead Free ◽

X Ray Diffraction ◽

Diffraction Patterns

(1-x) (K0.475Na0.475Li0.05)(Nb0.975Sb0.025)O3-xmolBiFeO3 (x=0, 0.002, 0.004, 0.006, 0.008) doped with 0.8mol%CuO lead-free piezoelectric ceramics were prepared by the solid state reaction technique. X-ray diffraction patterns suggested that all the ceramics presented perovskite structure. The compositional dependence of the phase structure and the electrical properties of the ceramics were studied. The ceramic (x=0.002) near room temperature exhibited excellent electrical properties (piezoelectric constant d33=172pC/N, planar electromechanical coupling factor kp=0.43, and dielectric constant =418). A relatively high mechanical quality factor (Qm=200) was also obtained in this particular composition. All these results revealed that this system might become a promising candidate for lead-free piezoelectric materials.

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Investigation on Electrical Properties of CaCu3Ti4O12-Modified (Na,Bi)TiO3-BaTiO3 Lead Free Piezoceramics

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.887-888.289 ◽

2014 ◽

Vol 887-888 ◽

pp. 289-293

Author(s):

Jing Chang Zhao ◽

Zhen Lai Zhou

Keyword(s):

Electrical Properties ◽

Electromechanical Coupling ◽

Piezoelectric Properties ◽

Piezoelectric Ceramics ◽

Electromechanical Coupling Factor ◽

Coupling Factor ◽

Mechanical Quality Factor ◽

Lead Free ◽

Lead Free Ceramics ◽

Structure Morphology

(Na,Bi)TiO3-BaTiO3lead free piezoelectric ceramics were fabricated with modification of CaCu3Ti4O12additives. The phase structure, morphology, dielectric and piezoelectric properties of prepared samples were investigated, respectively. It was found that CaCu3Ti4O12additives evidently improve the polarization properties of (Na,Bi)TiO3-BaTiO3lead free ceramics and the obtained samples exhibit an excellent piezoelectric properties (electromechanical coupling factorKp=31%, mechanical quality factorQm=151 and piezoelectric constantd33=160pC/N). According to results, the effect of CaCu3Ti4O12additives on electrical properties of (Na,Bi)TiO3-BaTiO3lead free piezoelectric ceramics is discussed.

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Enhanced electrical properties of (Li,Ce) co-doped Sr(Na0.5Bi0.5)Bi4Ti5O18 high temperature piezoceramics

RSC Advances ◽

10.1039/c6ra02203k ◽

2016 ◽

Vol 6 (40) ◽

pp. 33387-33392 ◽

Cited By ~ 11

Author(s):

Zhongran Yao ◽

Ruiqing Chu ◽

Zhijun Xu ◽

Jigong Hao ◽

Guorong Li

Keyword(s):

High Temperature ◽

Solid State ◽

Electrical Properties ◽

Solid State Reaction ◽

Piezoelectric Ceramics ◽

Solid State Reaction Method ◽

Lead Free ◽

Conventional Solid State Reaction ◽

Reaction Method ◽

Co Doped

Lead-free piezoelectric ceramics with the formula of Sr1−x(Li,Ce)x/2(Na0.5Bi0.5)Bi4Ti5O18 (LCSNBT-x, x = 0.0, 0.1, 0.2, 0.3, 0.4), were prepared by a conventional solid-state reaction method.

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Discharge Current Measurement and Depolarization Property of Lead-Free Niobate Piezoceramics

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.445.51 ◽

2010 ◽

Vol 445 ◽

pp. 51-54 ◽

Cited By ~ 2

Author(s):

Hitoshi Matsudo ◽

Kenichi Kakimoto ◽

Isao Kagomiya

Keyword(s):

Discharge Current ◽

Spontaneous Polarization ◽

Electromechanical Coupling ◽

Electromechanical Coupling Factor ◽

Solid State Reaction Method ◽

Coupling Factor ◽

Lead Free ◽

Ion Migration ◽

Oxygen Ion Migration ◽

Phase Transition Temperatures

Lead-free Na0.5K0.5NbO3 (NKN) piezoelectric ceramics was synthesized by an ordinal solid state reaction method. The ceramics was electrically poled under 3 kV/mm at 150 oC for 30 min. The discharge current-flow was measured for the poled ceramics at the heating rate of 1 oC/min from room temperature up to 500 oC. The two sharp peaks were observed at 209 and 417 oC. These temperatures were corresponded to orthorhombic-tetragonal (TO-T) and tetragonal-cubic (TC) phase transition temperatures, respectively. The sharp peaks were mainly originated from the decrease of the spontaneous polarization. Additionally, the several large broad patterns were also observed at 280, 363 and 375 oC, According to the electromechanical coupling factor kp, which is the indicative parameter of the polarization, mainly decreased at TO-T and TC. These broad peaks were not associated with the spontaneous polarization. The peaks seem to have been originated from the discharge current of the oxygen ion migration on elevating temperature inside the poled NKN ceramics.

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Structure and electrical properties of lead-free Sr1−x(K,Ce)x/2(Na0.5Bi0.5)Bi4Ti5O18 piezoelectric ceramics

RSC Advances ◽

10.1039/c5ra25398e ◽

2016 ◽

Vol 6 (17) ◽

pp. 13803-13808 ◽

Cited By ~ 4

Author(s):

Zhongran Yao ◽

Ruiqing Chu ◽

Zhijun Xu ◽

Jigong Hao ◽

Juan Du ◽

...

Keyword(s):

Solid State ◽

Electrical Properties ◽

Solid State Reaction ◽

Piezoelectric Ceramics ◽

Solid State Reaction Method ◽

Lead Free ◽

Conventional Solid State Reaction ◽

Reaction Method

Bismuth layer-structured ferroelectrics with a formula of Sr1−x(K,Ce)x/2(Na0.5Bi0.5)Bi4Ti5O18, were prepared by a conventional solid-state reaction method.

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Influence of Calcined Temperature on the Piezoelectric Properties of (Na0.48K0.47Li0.05)NbO3 Lead-Free Piezoelectric Ceramics Doped with CuO

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.760-762.763 ◽

2013 ◽

Vol 760-762 ◽

pp. 763-766 ◽

Cited By ~ 1

Author(s):

Xin You Huang ◽

Mu Sheng Huang ◽

Chun Hua Gao

Keyword(s):

Electromechanical Coupling ◽

Piezoelectric Ceramics ◽

Electromechanical Coupling Factor ◽

Solid State Reaction Method ◽

Coupling Factor ◽

Lead Free ◽

Comprehensive Properties ◽

Piezoelectric Strain ◽

Calcined Temperature ◽

Sintered Temperature

Na0.48K0.47Li0.05)NbO3(NKLN)Lead-free piezoelectric ceramics doped with CuO were prepared by traditional solid-state reaction method. Influence of calcined temperature on the material phase of NKLN lead-free piezoelectric ceramics doped with CuO by X-ray diffraction (XRD) and the influence of calcined temperature and sintered temperature on the properties of NKLN lead-free piezoelectric ceramics doped with CuO by others analysis method. The results show that the best calcined temperature is got, when calcined temperature is up to 850 °C, the mixed phase disappeares, a single phase perovskites structure is formed. With the increase of calcined temperature, piezoelectric strain constant (d33) planar electromechanical coupling factor (Kp) of NKLN lead-free piezoelectric ceramics increase first and then decrease, while only dielectric loss (tanδ) decreases first and then increases.The best calcined temperature is 850 °C, the best sintered temperature is 1080 °C, the NKLN lead-free piezoelectric ceramics doped with CuO with good comprehensive properties are obtained, whose d33, Kp, tanδ are 85 pC/N, 0.3, 0.038, respectively.

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Effect of CaZrO3 on phase structure and electrical properties of KNN-based lead-free ceramics

RSC Advances ◽

10.1039/c4ra16506c ◽

2015 ◽

Vol 5 (25) ◽

pp. 19647-19651 ◽

Cited By ~ 17

Author(s):

Yang Zhang ◽

Lingyu Li ◽

Wangfeng Bai ◽

Bo Shen ◽

Jiwei Zhai ◽

...

Keyword(s):

Phase Transition ◽

Solid State ◽

Electrical Properties ◽

Solid State Reaction ◽

Solid State Reaction Method ◽

Lead Free ◽

Polymorphic Phase Transition ◽

Conventional Solid State Reaction ◽

Reaction Method ◽

Lead Free Ceramics

(1 − x)[0.93(K0.5Na0.5)NbO3–0.07LiNbO3]–xCaZrO3 (KNN–LN–xCZ) lead-free piezoelectric ceramics have been prepared by the conventional solid state reaction method and investigated to differentiate the effects of polymorphic phase transition.

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Composition-driven phase boundary and electrical properties in (Ba0.94Ca0.06)(Ti1–xMx)O3 (M = Sn, Hf, Zr) lead-free ceramics

Dalton Transactions ◽

10.1039/c5dt04891e ◽

2016 ◽

Vol 45 (15) ◽

pp. 6466-6480 ◽

Cited By ~ 49

Author(s):

Chunlin Zhao ◽

Hui Wang ◽

Jie Xiong ◽

Jiagang Wu

Keyword(s):

Solid State ◽

Electrical Properties ◽

Solid State Reaction ◽

Phase Structure ◽

Composition Dependence ◽

Solid State Reaction Method ◽

Lead Free ◽

Conventional Solid State Reaction ◽

Reaction Method ◽

Lead Free Ceramics

In this study, we systematically investigated the composition dependence of the phase structure, microstructure, and electrical properties of (Ba0.94Ca0.06)(Ti1−xMx)O3 (M = Sn, Hf, Zr) ceramics synthesised by the conventional solid-state reaction method.

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