Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/555
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dc.contributorDepartment of Applied Physics-
dc.contributorMaterials Research Centre-
dc.creatorLin, D-
dc.creatorKwok, KW-
dc.creatorChan, HLW-
dc.date.accessioned2014-12-11T08:24:46Z-
dc.date.available2014-12-11T08:24:46Z-
dc.identifier.issn0003-6951-
dc.identifier.urihttp://hdl.handle.net/10397/555-
dc.language.isoenen_US
dc.publisherAmerican Institute of Physicsen_US
dc.rights© 2007 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in D.M. Lin, K.W. Kwok and H.L.W. Chan, Appl. Phys. Lett. 91, 143513 (2007) and may be found at http://link.aip.org/link/?apl/91/143513en_US
dc.subjectBarium compoundsen_US
dc.subjectDielectric polarisationen_US
dc.subjectManganese compoundsen_US
dc.subjectPiezoceramicsen_US
dc.subjectPotassium compoundsen_US
dc.subjectSodium compoundsen_US
dc.subjectSolid-state phase transformationsen_US
dc.subjectZirconiumen_US
dc.titleDielectric and piezoelectric properties of (K[sub 0.5]Na[sub 0.5])NbO₃-Ba(Zr[sub 0.05]Ti[sub 0.95])O₃ lead-free ceramicsen_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.spage1-
dc.identifier.epage3-
dc.identifier.volume91-
dc.identifier.doi10.1063/1.2794798-
dcterms.abstractLead-free ceramics (1−x)(K[sub 0.5]Na[sub 0.5])NbO₃-xBa(Zr[sub 0.05]Ti[sub 0.95])O₃ doped with 1 mol % MnO₂ have been fabricated by pressureless sintering. With the MnO₂ doping, all the ceramics can be well sintered at 1100–1160 °C and exhibit a dense and pure perovskite structure. After the addition of Ba(Zr[sub 0.05]Ti[sub 0.95])O₃, a relax behavior is induced and both the cubic-tetragonal and tetragonal-orthorhombic phase transitions shift to lower temperatures. Coexistence of the orthorhombic and tetragonal phases is hence formed in the ceramics with 0.04<x<0.07 at room temperature. It is suggested that owing to the more possible polarization states resulting from the coexistence of the two phases, the piezoelectric and dielectric properties of the ceramics are enhanced significantly. The ceramic with x=0.06 exhibits the following optimum properties: d₃₃=234 pC/N, k[sub p]=0.49, k[sub t]=0.48, ε[sub r]=1191, tan δ=1.20%, and T[sub C]=318 °C.-
dcterms.accessRightsopen accessen_US
dcterms.bibliographicCitationApplied physics letters, 4 Oct. 2007, v. 91, 143513, p. 1-3-
dcterms.isPartOfApplied physics letters-
dcterms.issued2007-10-04-
dc.identifier.isiWOS:000249974100127-
dc.identifier.eissn1077-3118-
dc.identifier.rosgroupidr36082-
dc.description.ros2007-2008 > Academic research: refereed > Publication in refereed journal-
dc.description.oaVersion of Recorden_US
dc.identifier.FolderNumberOA_IR/PIRAen_US
dc.description.pubStatusPublisheden_US
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