Processing of 0.55(Ba0.9Ca0.1)TiO3-0.45Ba(Sn0.2Ti0.8)O-3 lead-free ceramics with high piezoelectricity

Simple item page
dc.contributor.authorBijalwan, Vijay
dc.contributor.authorTofel, Pavel
dc.contributor.authorSpotz, Zdeněk
dc.contributor.authorČástková, Klára
dc.contributor.authorSobola, Dinara
dc.contributor.authorErhart, Jiří
dc.contributor.authorMaca, Karel
dc.date.accessioned2020-03-27T14:51:13Z
dc.date.available2020-03-27T14:51:13Z
dc.date.issued2020-03
dc.description.abstractWe report a large piezoelectric constant (d(33)), 720 pC/N and converse piezoelectric constant (d(33)*), 2215 pm/V for 0.55(Ba0.9Ca0.1)TiO3-0.45Ba(Sn0.2Ti0.8)O-3 ceramics; the biggest value achieved for lead-free piezoceramics so far. The ceramic powders were calcined between 1050 degrees C-1350 degrees C and sintered at 1480 degrees C. The best properties were obtained at a calcination temperature (CT) of 1350 degrees C. The fitting combination of processing and microstructural parameters for example, initial powder particle size >2 mu m, ceramics density similar to 95%, and grain size similar to 40 mu m led to a formation of orthorhombic-tetragonal-pseudo-cubic (O-T-PC) mixed phase boundary near room temperature, supported by Raman spectra, pointed to the extremely high piezoelectric activity. These conditions significantly increase piezoelectric constants, together with high relative permittivity (epsilon(r)) >5000 and a low loss tangent (tan delta) of 0.029. In addition, the d(33) value stabilizes in the range of 400-500 pC/N for all samples calcined between 1050 degrees C and 1250 degrees C. The results entail that the (Ba,Ca)(Sn,Ti)O-3 ceramics are strong contenders to be a substitute for lead-based materials for room temperature applications.cs
dc.format.extent14 strancs
dc.identifier.doi10.1111/jace.17090
dc.identifier.orcid0000-0002-2960-126X Erhart, Jiří
dc.identifier.urihttps://dspace.tul.cz/handle/15240/154655
dc.identifier.urihttps://ceramics.onlinelibrary.wiley.com/doi/full/10.1111/jace.17090
dc.language.isocscs
dc.publisherWILEY, 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
dc.relation.ispartofJOURNAL OF THE AMERICAN CERAMIC SOCIETY
dc.subject(Ba,Ca)(Sn,Ti)O3cs
dc.subjectlead-free ceramicscs
dc.subjectmicrostructurecs
dc.subjectmorphotropic phase boundarycs
dc.subjectpiezoelectric materialscs
dc.subjectpropertiescs
dc.titleProcessing of 0.55(Ba0.9Ca0.1)TiO3-0.45Ba(Sn0.2Ti0.8)O-3 lead-free ceramics with high piezoelectricitycs
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Processing.pdf
Size:
2.81 MB
Format:
Adobe Portable Document Format
Description:
článek
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections