Journal ArticleDOI
Orthorhombic-tetragonal phase coexistence and enhanced piezo-response at room temperature in Zr, Sn, and Hf modified BaTiO3
TLDR
The effect of Zr, Hf, and Sn in BaTiO3 has been investigated at close composition intervals in the dilute concentration limit in this paper, and the results show substantial enhancement in the longitudinal piezoelectric coefficient (d(33)).Abstract:
The effect of Zr, Hf, and Sn in BaTiO3 has been investigated at close composition intervals in the dilute concentration limit. Detailed structural analysis by x-ray and neutron powder diffraction revealed that merely 2mol. % of Zr, Sn, and Hf stabilizes a coexistence of orthorhombic (Amm2) and tetragonal (P4mm) phases at room temperature. As a consequence, all the three systems show substantial enhancement in the longitudinal piezoelectric coefficient (d(33)), with Sn modification exhibiting the highest value similar to 425 pC/N. (C) 2014 AIP Publishing LLC.read more
Citations
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BaTiO3-based piezoelectrics: Fundamentals, current status, and perspectives
Matias Acosta,Nikola Novak,Virginia Rojas,Satyanarayan Patel,Satyanarayan Patel,Rahul Vaish,Jurij Koruza,George A. Rossetti,Jürgen Rödel +8 more
TL;DR: A critical review that encompasses the fundamentals and state-of-the-art knowledge of barium titanate-based piezoelectrics is presented in this paper, where a detailed compilation of their functional and mechanical properties is provided.
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
Large room-temperature electrocaloric effect in lead-free BaHfxTi1−xO3 ceramics under low electric field
TL;DR: In this paper, the phase diagram of lead-free BaHf x Ti 1−x O 3 (BHT) ferroelectric ceramics was established, and the electrocaloric efficiency (ΔT/ΔE ǫ = 0.35°C under 10kV/cm) was reported.
Journal ArticleDOI
Multifunctional barium titanate ceramics via chemical modification tuning phase structure
Journal ArticleDOI
Composition-driven phase boundary and electrical properties in (Ba₀.₉₄Ca₀.₀₆)(Ti₁-xMx)O₃ (M = Sn, Hf, Zr) lead-free ceramics.
TL;DR: The electrical properties and the related physical mechanisms of BaTiO3-based ceramics can be well unveiled by studying their chemical modification behavior.
References
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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.
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Large Piezoelectric Effect in Pb-Free Ceramics
TL;DR: It is predicted that the single-crystal form of the MPB composition of the present system may reach a giant d(33) = 1500-2000 pC/N, which may provide a new recipe for designing highly piezoelectric materials (both Pb-free and P b-containing) by searching MPBs starting from a TCP.
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A monoclinic ferroelectric phase in the pb(zr1-xtix)o3 solid solution
TL;DR: A previously unreported ferroelectric phase has been discovered in a highly homogeneous sample of PbZr0.52Ti0.48O3 by high-resolution synchrotron x-ray powder diffraction measurements as mentioned in this paper.
Journal ArticleDOI
Giant strain in lead-free piezoceramics Bi0.5Na0.5TiO3–BaTiO3–K0.5Na0.5NbO3 system
TL;DR: In this paper, the authors describe the development of a class of lead-free (0.94−x)Bi0.5Na 0.5TiO3-0.06BaTiO 3−xK0.4NbO3 ceramics.