Modified (NaK)NbO<sub>3</sub>ceramics for transducer applications

Murty, S. Narayana; Murty, K.V.R.; Umakantham, K.; Bhanumathi, A.

doi:10.1080/00150199008221484

Cited by 23 publications

(11 citation statements)

References 9 publications

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“…The value of grain size thus calculated for the compositions agree with previous reported results 5,7 . Fig.…”

Section: Resultssupporting

confidence: 81%

Study of subcell parameters, grain size and dielectric properties of Potassium Sodium Niobate mixed system

Singh¹,

Uniyal²,

Bhatt³

et al. 2001

Sri Lankan J Phys

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Pellets of K 1-x Na x NbO 3 mixed system of different concentration have been prepared by solid solution reaction method. The subcell parameters & grain size have been calculated using Xray diffraction data for mixed K 1-x Na x NbO 3 system where x is varied from 0, 20, 40, 50, 80, 100%. The variation of unitcell parameters and grain size with composition, at room temperature have been reported. Dielectric constant and loss tangent at room temperature and at different frequencies have also been reported.

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“…The value of grain size thus calculated for the compositions agree with previous reported results 5,7 . Fig.…”

Section: Resultssupporting

confidence: 81%

Study of subcell parameters, grain size and dielectric properties of Potassium Sodium Niobate mixed system

Singh¹,

Uniyal²,

Bhatt³

et al. 2001

Sri Lankan J Phys

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“…Among various lead-free piezoelectric materials, ceramics based on potassium sodium niobate (KNbO 3 -NaNbO 3 ) are most promising [1][2][3][4][5]. Highly dense (Na 0.5 K 0.5 ) NbO 3 (KNN) ceramics was fabricated using hot pressing which possessed high piezoelectric constants [2].…”

Section: Introductionmentioning

confidence: 99%

Influence of Sintering Temperature on Densification, Structure and Microstructure of Li and Sb Co-Modified (K,Na)NbO<sub>3</sub>-Based Ceramics

Rani¹,

Sharma²

2011

MSA

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“…Among the various lead-free piezoelectric materials, alkali niobate (K,Na)NbO 3 (KNN) is considered one of the most promising candidates for lead-free piezoelectric ceramics due to its high Curie temperature (about 420 ℃) and strong ferroelectricity [1][2][3][4][5]. However, the high volatility of alkaline elements at high temperature makes it difficult to achieve the densification and obtain well-sintered KNN ceramics from pure KNN ceramics using ordinary sintering process, which has hindered the research for a long time [2,6].…”

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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Modified (NaK)NbO₃ceramics for transducer applications

Cited by 23 publications

References 9 publications

Study of subcell parameters, grain size and dielectric properties of Potassium Sodium Niobate mixed system

Study of subcell parameters, grain size and dielectric properties of Potassium Sodium Niobate mixed system

Influence of Sintering Temperature on Densification, Structure and Microstructure of Li and Sb Co-Modified (K,Na)NbO<sub>3</sub>-Based Ceramics

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

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Modified (NaK)NbO3ceramics for transducer applications

Cited by 23 publications

References 9 publications

Study of subcell parameters, grain size and dielectric properties of Potassium Sodium Niobate mixed system

Study of subcell parameters, grain size and dielectric properties of Potassium Sodium Niobate mixed system

Influence of Sintering Temperature on Densification, Structure and Microstructure of Li and Sb Co-Modified (K,Na)NbO&lt;sub&gt;3&lt;/sub&gt;-Based Ceramics

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

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Modified (NaK)NbO₃ceramics for transducer applications

Influence of Sintering Temperature on Densification, Structure and Microstructure of Li and Sb Co-Modified (K,Na)NbO<sub>3</sub>-Based Ceramics