Journal ArticleDOI
Characterization of lead free (K0.5Na0.5)NbO3–LiSbO3 piezoceramic
TLDR
In this article, LiSbO3 (LS) modified KNN based ceramics were sintered at atmospheric pressure and high density (>96% theoretical) was obtained, and detailed elastic, dielectric, piezoelectric and electromechanical properties were characterized by using the resonance technique combined with the ultrasonic method.About:
This article is published in Solid State Communications.The article was published on 2007-03-01. It has received 193 citations till now. The article focuses on the topics: Dielectric & Permittivity.read more
Citations
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Journal ArticleDOI
Perspective on the Development of Lead-free Piezoceramics
TL;DR: In this paper, general guidelines for the development of lead-free piezoelectric ceramics are presented, ranging from atom to phase diagram, and the current development stage in lead free piezoceramics is then critically assessed.
Journal ArticleDOI
(K, Na)NbO3-Based Lead-Free Piezoceramics: Fundamental Aspects, Processing Technologies, and Remaining Challenges
TL;DR: A comprehensive review on the latest development of KNN-based piezoelectric ceramics is presented in this paper, including phase structure, property enhancement approaches, and sintering processes as well as the status of some promising applications.
Journal ArticleDOI
Recent development in lead-free perovskite piezoelectric bulk materials
TL;DR: In this paper, the authors highlighted the compelling physical properties of lead-free piezoelectric perovskite materials and summarized their state-of-the-art progress.
Journal ArticleDOI
Modified (K0.5Na0.5)NbO3 based lead-free piezoelectrics with broad temperature usage range
TL;DR: In this paper, LiSbO3 and CaTiO3-based lead-free materials with orthorhombic to tetragonal polymorphic phase transition (TO-T) were used for actuator and ultrasonic transducer applications.
Journal ArticleDOI
Losses in ferroelectric materials
TL;DR: It is shown that a thorough understanding on the kinetic processes is critical in analyzing energy loss behavior and other time-dependent properties in ferroelectric materials, and a general theoretical model is proposed to describe the inherent relationships among elastic, dielectric, piezoelectric and mechanical losses.
References
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Journal ArticleDOI
Lead-free piezoceramics
Yasuyoshi Saito,Hisaaki Takao,Toshihiko Tani,Tatsuhiko Nonoyama,Kazumasa Takatori,Takahiko Homma,Toshiatsu Nagaya,Masaya Nakamura +7 more
TL;DR: A lead-free piezoelectric ceramic with an electric-field-induced strain comparable to typical actuator-grade PZT is reported, achieved through the combination of the discovery of a morphotropic phase boundary in an alkaline niobate-based perovskite solid solution, and the development of a processing route leading to highly textured polycrystals.
Journal ArticleDOI
Phase transitional behavior and piezoelectric properties of (Na0.5K0.5)NbO3–LiNbO3 ceramics
TL;DR: In this article, a morphotropic phase boundary between orthorhombic and tetragonal phases is found in the composition range 0.05
Journal ArticleDOI
Hot Pressing of Potassium‐Sodium Niobates
R. E. Jaeger,L. Egerton +1 more
TL;DR: In this article, the authors applied the rate equation of Murray, Live, and Williams for hot-pressing ceramics to obtain a fine microstructure and improved piezoelectric activity.
Journal ArticleDOI
Dielectric and Piezoelectric Properties of (Bi0.5Na0.5)TiO3–(Bi0.5K0.5)TiO3 Systems
TL;DR: In this paper, the structural, dielectric and piezoelectric properties of [Bi0.5Na 0.5K 0.20]TiO3 ceramics were studied for the compositional range, X=0.16-0.20.
Journal ArticleDOI
Piezoelectric properties of Li- and Ta-modified (K0.5Na0.5)NbO3 ceramics
TL;DR: Guo et al. as discussed by the authors showed that high densities and piezoelectric properties can be obtained for all compositions by pressureless sintering in air, without cold isostatic pressing, and without any sinterings aid or special powder treatment.