Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/541
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dc.contributorDepartment of Applied Physics-
dc.contributorMaterials Research Centre-
dc.creatorLau, ST-
dc.creatorCheng, CH-
dc.creatorChoy, SH-
dc.creatorLin, D-
dc.creatorKwok, KW-
dc.creatorChan, HLW-
dc.date.accessioned2014-12-11T08:28:00Z-
dc.date.available2014-12-11T08:28:00Z-
dc.identifier.issn0021-8979-
dc.identifier.urihttp://hdl.handle.net/10397/541-
dc.language.isoenen_US
dc.publisherAmerican Institute of Physicsen_US
dc.rights© 2008 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 S.T. Lau et al., J. Appl. Phys. 103, 104105 (2008) and may be found at http://link.aip.org/link/?jap/103/104105en_US
dc.subjectBismuth compoundsen_US
dc.subjectCeramicsen_US
dc.subjectPotassium compoundsen_US
dc.subjectPyroelectric detectorsen_US
dc.subjectPyroelectricityen_US
dc.subjectSodium compoundsen_US
dc.titleLead-free ceramics for pyroelectric applicationsen_US
dc.typeJournal/Magazine Articleen_US
dc.description.otherinformationAuthor name used in this publication: S. T. Lauen_US
dc.description.otherinformationAuthor name used in this publication: S. H. Choyen_US
dc.description.otherinformationAuthor name used in this publication: D. M. Linen_US
dc.description.otherinformationAuthor name used in this publication: K. W. Kwoken_US
dc.description.otherinformationAuthor name used in this publication: H. L. W. Chanen_US
dc.identifier.spage1-
dc.identifier.epage4-
dc.identifier.volume103-
dc.identifier.issue10-
dcterms.abstractThe use of lead-free materials has recently become a very important issue in environmental protection of the earth. Two groups of lead-free ceramics, (K[sub 0.5],Na[sub 0.5])NbO₃ based (KNN) and Bi[sub 1−y](Na[sub x]K[sub 1−x])[sub y]TiO₃ based (BNKT), were studied for their thermal, dielectric, and pyroelectric properties as candidates for pyroelectric sensor applications. The BNKT-based ceramic, [Bi[sub 0.5](Na[sub 0.94]K[sub 0.05]Li[sub 0.016])[sub 0.5]][sub 0.95]Ba[sub 0.05]TiO₃ (BNKLBT), shows excellent pyroelectric properties when compared with KNN-based ceramic and lead zirconate titanate. Its properties were measured as follows: pyroelectric coefficient p=360 µC/m²K, pyroelectric figure of merit of current, voltage, and detectivity F[sub i]=221 pm/V, F[sub v]=0.030 m²/C, and F[sub d]=14.8 µPa[sup −½]. With these outstanding pyroelectric properties, the BNKLBT ceramic can be a promising material for pyroelectric sensor applications. The BNKLBT ceramic with different thicknesses (i.e., 0.3, 0.5, and 0.7 mm) have been used as the sensing element for fabricating infrared detectors. The current responsivity of the sensors was evaluated as functions of frequency.-
dcterms.accessRightsopen accessen_US
dcterms.bibliographicCitationJournal of applied physics, 23 May 2008, v. 103, no. 10, 104105, p. 1-4-
dcterms.isPartOfJournal of applied physics-
dcterms.issued2008-05-23-
dc.identifier.isiWOS:000256303800101-
dc.identifier.scopus2-s2.0-44649141258-
dc.identifier.eissn1089-7550-
dc.identifier.rosgroupidr35529-
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
dc.description.oaCategoryVoR alloweden_US
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