Investigation of nano particle additives on lithium doped KNN lead free piezoelectric ceramics

Saeri, M.R.; Barzegar, A.; Moghadam, Hajar Ahmadi

doi:10.1016/j.ceramint.2011.05.044

Cited by 24 publications

(17 citation statements)

References 18 publications

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“…Besides that, no liquid phase structure was detected in all samples as expected. These finding support the argument that silicate glass was incorporated into the KNN structure [6][7]. Nyquist impedance plot of KNN pellet at three different sintering temperatures is shown in FIGURE 4.…”

Section: Resultssupporting

confidence: 75%

Structural and electrical evaluation of KNN ceramic

Izzuddin¹,

Jumali²,

Zainuddin³

2014

AIP Conference Proceedings

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Section: Resultssupporting

confidence: 75%

Structural and electrical evaluation of KNN ceramic

Izzuddin¹,

Jumali²,

Zainuddin³

2014

AIP Conference Proceedings

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“…Recent studies have shown that Li/Ta/Sb doping can increase the sintering density of KNN ceramics and significantly improve its piezoelectric properties. Saeri et al [19] investigated the effects of Li doping on the property of KNN lead-free ceramics, which exhibit d 33 = 215 pC/N and ε r = 560. Su et al [20] reported that (K 0.7 Na 0.3 )(Nb 0.95 Sb 0.05 )O 3 lead-free piezoelectric powders are successfully synthesized by hydrothermal treatment.…”

Section: Introductionmentioning

confidence: 99%

Influence of sintering temperature on electrical properties of (K0.4425Na0.52Li0.0375)(Nb0.8825Sb0.07Ta0.0475)O3 ceramics without phase transition induced by sintering temperature

et al. 2013

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Lead-free (K 0.4425 Na 0.52 Li 0.0375 )(Nb 0.8825 Sb 0.07 Ta 0.0475 )O 3 (KNLNST) piezoelectric ceramics are synthesized by the conventional solid-state reaction method. The sintering temperature and poling temperature dependence of ceramic properties are investigated. Previous studies have shown that variation of sintering temperature can cause phase transition, similar to the morphotropic phase boundary (MPB) behavior induced by composition changes in Pb(Zr,Ti)O 3 (PZT). And the best piezoelectric performance can be obtained near the phase-transition sintering temperature. In this research, phase transition induced by sintering temperature cannot be detected and excellent piezoelectric properties can still be obtained. The sintering temperature of the largest piezoelectric coefficient of such composition is lower than that of the highest density, which is considered in composition segregation as a result of intensified volatilization of alkali metal oxides. Combined with the effect of poling temperature, the peak values of the piezoelectric properties are d 33 = 313 pC/N, k p = 47%,  r = 1825, tan = 0.024, T o-t = 88 ℃, and T C = 274 ℃.

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“…Additionally, lithium minerals are employed in batteries [4] and in the manufacture of glass [4] and ceramics [5]; among others. This is a phyllosilicate mineral of the mica group showing complex variable compositions because of the tendency for isovalent and heterovalent isomorphism substitutions to form series with muscovite and other Lirich micas such as zinnwaldite [6].…”

Section: Introductionmentioning

confidence: 99%

Thermo- and cathodoluminescence properties of lepidolite

Rodrı́guez-Lazcano

Correcher

García-Guinea

2013

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

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Lepidolite, K(Li,Al) 3 (Si,Al) 4 O 10 (F,OH) 2 , and many of the related phyllosilicate mineral of the mica group have been well studied from the chemical and structural point of view; however, to the best of our knowledge, studies on their luminescence properties have been scarcely reported. This work focuses on the thermoluminescence (TL) and cathodoluminescence (CL) response of a natural lepidolite from Portugal previously characterized by means of environmental scanning electron microscope (ESEM) and Xray fluorescence (XRF) and atomic absorption spectroscopy (AAS) techniques. The complexity of the thermoluminescence glow curves of non-irradiated and 1Gy irradiated samples suggests a structure of a continuous trap distribution involving multiorder kinetics. UV-IR CL spectral emission shows seven peaks centered at 330, 397, 441, 489, 563, 700 and 769 nm. Such emission bands could be due to (i) structural defects, i. e.[AlO 4 ] or non-bridging oxygen hole centers, and (ii) the presence of point defects associated with Mn 2+ and Fe 3+ .

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Investigation of nano particle additives on lithium doped KNN lead free piezoelectric ceramics

Cited by 24 publications

References 18 publications

Structural and electrical evaluation of KNN ceramic

Structural and electrical evaluation of KNN ceramic

Influence of sintering temperature on electrical properties of (K0.4425Na0.52Li0.0375)(Nb0.8825Sb0.07Ta0.0475)O3 ceramics without phase transition induced by sintering temperature

Thermo- and cathodoluminescence properties of lepidolite

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