Structural and electrical characterization of (K0.48Na0.52)0.96Li0.04Nb0.85Ta0.15O3 synthesized by spray drying

López, Rigoberto; González, Federico; Villafuerte-Castrejón, M.E.

doi:10.1016/j.jeurceramsoc.2009.10.023

Cited by 12 publications

(6 citation statements)

References 21 publications

(13 reference statements)

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“…The positive effect is probably ascribable to the lower temperature of sintering and the higher density achieved with respect to the conventional pressureless (PLS) techniques. Similar performance was obtained by the same authors but using a spray drying technique which allows to obtain small particle size of KNLNT at low sintering temperature …”

Section: Advanced Synthesis and Properties Of Knn And Related Composisupporting

confidence: 79%

Advanced Synthesis on Lead‐Free K_xNa_(1−x)NbO₃ Piezoceramics for Medical Imaging Applications

Garroni

Senes²,

Iacomini³

et al. 2018

Physica Status Solidi (a)

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Ultrasonic imaging system is a non‐invasive medical imaging technique that has become one of the most widely used diagnostic tools in modern medicine for detecting prenatal anomalies and deep screening of biological tissues. One of the core components of the ultrasound system is represented by the probe where is located the transducer which produces mechanical energy in response to electrical signals, and conversely, produce electrical signals in response to mechanical stimulus. The ultrasound transducer in the probe is generally made of a piezoelectric ceramic material such as lead zirconate titanate (PZT), which present two important limitations as the presence of toxic material as the lead, and low acoustic impedance ascribable to its high density. For these reasons, it is necessary to focus the research on new eco‐friendly piezoelectric materials with properties comparable with PZT. Among them potassium sodium niobate is considered as a leading lead‐free candidate to replace lead‐based piezoceramics, resulting the most promising. In this review, the most relevant and advanced synthesis approaches and the unique properties of this class of lead‐free piezoceramics are presented in detail.

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Section: Advanced Synthesis and Properties Of Knn And Related Composisupporting

confidence: 79%

Advanced Synthesis on Lead‐Free K_xNa_(1−x)NbO₃ Piezoceramics for Medical Imaging Applications

Garroni

Senes²,

Iacomini³

et al. 2018

Physica Status Solidi (a)

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“…The effects of stoichiometry and milling processes in the solid state synthesis and in the piezoelectric properties of these Li-Ta-Sb modified KNN materials (nano-sized) has been studied: the sintered ceramics are not hygroscopic and resistant to ambient conditions [130]. Interestingly enough, this kind of KNN material (modified or not) has been prepared by the “spray-drying” method, as an alternative to the ceramic method, yielding nano-sized powders which can be sintered to prepare ceramics of high density (96%) with improved properties [131,132]. With the same strategy, trying to avoid potassium or sodium losses by sublimation, these ceramics have been prepared by “fast chemistry” methods, such as spark-plasma synthesis (SPS) and microwave-assisted methods [133,134].…”

Section: (K05na05)nbo3 (Knn)mentioning

confidence: 99%

Towards Lead-Free Piezoceramics: Facing a Synthesis Challenge

Villafuerte‐Castrejon

Morán

Reyes-Montero

et al. 2016

Materials

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The search for electroceramic materials with enhanced ferro-pyro-piezoelectric properties and revealing the perovskite type structure has been the objective of a significant number of manuscripts reported in the literature. This has been usually carried out by proposing the synthesis and processing of new compounds and solid solution series. In this work, several methods to obtain ferro-pyro-piezoelectric families of materials featuring the well-known ABO3 perovskite structure (or related) such as BaTiO3, Ba1–xCaxTi1–yZryO3, (Bi0.5Na0.5)TiO3, (K0.5Na0.5)NbO3 and their solid solutions with different cations either in the A or B positions, are presented. For this kind of materials, the challenge for obtaining a single phase compound with a specific grain size and morphology and, most importantly, with the adequate stoichiometry, will also be discussed. The results reviewed herein will be discussed in terms of the tendency of working with softer conditions, i.e., lower temperature and shorter reaction times, also referred to as soft-chemistry.

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“…These chemical elements usually enter in B position of the ABO 3 perovskite structure and thus produce A-site vacancies that suppress the formation of the hygroscopic secondary products [8]. Some studies have also been carried out concerning the formation of solid solutions, such as KNN-SrTiO 3 [9], KNN-LiNbO 3 [10], KNN-LiTaO 3 [11][12][13], KNN-LiSbO 3 [14] and KNN-LiSbO 3 -LiTaO 3 [15,16]. The effects of such MnO substitution on the phase composition, microstructure, dielectric and piezoelectric properties of [(K 0.44 Na 0.52 Li 0.04 ) 1−x Mn x/2 ](Nb 0.86 Ta 0.10 Sb 0.04 )O 3 ceramics were investigated.…”

Section: Introductionmentioning

confidence: 99%

Effect of MnO doping on the structure, microstructure and electrical properties of the (K,Na,Li)(Nb,Ta,Sb)O3 lead-free piezoceramics

Rubio-Marcos

Marchet

Vendrell

et al. 2011

Journal of Alloys and Compounds

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Structural and electrical characterization of (K0.48Na0.52)0.96Li0.04Nb0.85Ta0.15O3 synthesized by spray drying

Cited by 12 publications

References 21 publications

Advanced Synthesis on Lead‐Free K_xNa_(1−x)NbO₃ Piezoceramics for Medical Imaging Applications

Advanced Synthesis on Lead‐Free K_xNa_(1−x)NbO₃ Piezoceramics for Medical Imaging Applications

Towards Lead-Free Piezoceramics: Facing a Synthesis Challenge

Effect of MnO doping on the structure, microstructure and electrical properties of the (K,Na,Li)(Nb,Ta,Sb)O3 lead-free piezoceramics

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Structural and electrical characterization of (K0.48Na0.52)0.96Li0.04Nb0.85Ta0.15O3 synthesized by spray drying

Cited by 12 publications

References 21 publications

Advanced Synthesis on Lead‐Free KxNa(1−x)NbO3 Piezoceramics for Medical Imaging Applications

Advanced Synthesis on Lead‐Free KxNa(1−x)NbO3 Piezoceramics for Medical Imaging Applications

Towards Lead-Free Piezoceramics: Facing a Synthesis Challenge

Effect of MnO doping on the structure, microstructure and electrical properties of the (K,Na,Li)(Nb,Ta,Sb)O3 lead-free piezoceramics

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Advanced Synthesis on Lead‐Free K_xNa_(1−x)NbO₃ Piezoceramics for Medical Imaging Applications

Advanced Synthesis on Lead‐Free K_xNa_(1−x)NbO₃ Piezoceramics for Medical Imaging Applications