Enhancement of pyroelectric properties of lead-free 0.94 Na 0.5 Bi 0.5 TiO 3-0.06 BaTiO 3 ceramics by La doping

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dc.contributor.authorBalakt, Ahmed M.
dc.contributor.authorShaw, Christopher P.
dc.contributor.authorZhang, Qi
dc.date.accessioned2017-01-06T14:47:47Z
dc.date.available2017-01-06T14:47:47Z
dc.date.issued2016-12-13
dc.description.abstractLead-free 0.94NBT-0.06BT-xLa ceramics at x = 0.0–1.0 (%) were synthesized by a conventional solid-state route. XRD shows that the compositions are at a morphotropic phase boundary where rhombohedral and tetragonal phases coexist. With increasing La3+ content pyroelectric coefficient (p) and figures of merits greatly increase; however, the depolarization temperature (Td) decreases. p is 7.24 × 10−4C m−2 °C−1 at RT at x = 0.5% and 105.4 × 10−4C.m−2 °C−1 at Td at x = 0.2%. Fi and Fv show improvements at RT from 1.12 (x = 0%) to 2.65 (x10 −10 m v−1) (x = 0.5%) and from 0.021 to 0.048 (m2.C−1) respectively. Fi and Fv show a huge increase to 37.6 × 10−10 m v−1 and 0.56 m2 C−1 respectively at Td at x = 0.2%. FC shows values of 2.10, 2.89, and 2.98 (x10−9C cm−2 °C−1) at RT at 33, 100 and 1000 (Hz) respectively. Giant pyroelectric properties make NBT-0.06BT-xLa at x = 0.2% and 0.5% promising materials for many pyroelectric applicationsen_UK
dc.identifier.citationBalakt AM, Shaw CP, Zhang Q. Enhancement of pyroelectric properties of lead-free 0.94Na0.5Bi0.5TiO3-0.06BaTiO3 ceramics by La doping. Journal of the European Ceramic Society, Volume 37, Issue 4, April 2017, pp. 1459-1466en_UK
dc.identifier.issn0955-2219
dc.identifier.urihttp://dx.doi.org/10.1016/j.jeurceramsoc.2016.12.021
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/11226
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectLead free ceramicsen_UK
dc.subjectLanthanum doping NBT-0.06 BTen_UK
dc.subjectMorphotropic phase boundary (MPB)en_UK
dc.subjectDepolarization temperatureen_UK
dc.subjectPyroelectric properties;en_UK
dc.subjectFigure of meritsen_UK
dc.titleEnhancement of pyroelectric properties of lead-free 0.94 Na 0.5 Bi 0.5 TiO 3-0.06 BaTiO 3 ceramics by La dopingen_UK
dc.typeArticleen_UK

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