Enhanced Curie temperature and superior temperature stability by site selected doping in BCZT based lead-free ceramics

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dc.contributor.authorKumari, Sapna
dc.contributor.authorKumar, Amit
dc.contributor.authorKumar, Aman
dc.contributor.authorKumar, V.
dc.contributor.authorThakur, Vikas N.
dc.contributor.authorKumar, Ashok
dc.contributor.authorGoyal, P.K.
dc.contributor.authorGaur, Anurag
dc.contributor.authorArya, Anil
dc.contributor.authorSharma, A.L.
dc.date.accessioned2024-01-21T10:42:38Z
dc.date.accessioned2024-08-13T12:44:41Z
dc.date.available2024-01-21T10:42:38Z
dc.date.available2024-08-13T12:44:41Z
dc.date.issued2022-01-31T00:00:00
dc.description.abstractIn this work, Bi3+ doped Ba0.98-3x/2BixCa0.02Zr0.02Ti0.976Cu0.008O3 [0 ? x ? 0.03] lead free ceramics, to be employed for structural, dielectric and ferroelectric studies, have been synthesized via conventional solid state reaction method. Rietveld refinement of the X-ray diffraction (XRD) data evidences the existence of a pure perovskite phase with tetragonal symmetry for all ceramics. The Scanning Electron Microscopy (SEM) reveals that the grain size, which is 16.14 ?m for x = 0 reduced to 2.11 ?m for x = 0.03. Dielectric studies demonstrate excellent dielectric behavior with high Curie temperature (TC ?159 �C), high dielectric constant (?r ?834, ?max ? 3146), and a low dielectric loss (tan? ? 0.019), for an optimum value of x = 0.02. The analysis of temperature coefficient of the dielectric permittivity indicates the applicability of these materials in multilayer ceramic capacitors. Impedance studies, conducted to understand the underlying physical mechanisms, are found to be in good agreement with the results of structural and dielectric studies. Furthermore, the ferroelectric measurement confirms the ferroelectric nature for all samples with an energy storage efficiency (?) of ?42% for x = 0.02 composition. � 2022 Elsevier Ltd and Techna Group S.r.l.en_US
dc.identifier.doi10.1016/j.ceramint.2022.01.260
dc.identifier.issn2728842
dc.identifier.urihttp://10.2.3.109/handle/32116/3700
dc.identifier.urlhttps://linkinghub.elsevier.com/retrieve/pii/S0272884222002772
dc.language.isoen_USen_US
dc.publisherElsevier Ltden_US
dc.subjectDielectric propertiesen_US
dc.subjectFerroelectric propertiesen_US
dc.subjectLead-free ceramicsen_US
dc.subjectPerovskiteen_US
dc.titleEnhanced Curie temperature and superior temperature stability by site selected doping in BCZT based lead-free ceramicsen_US
dc.title.journalCeramics Internationalen_US
dc.typeArticleen_US
dc.type.accesstypeClosed Accessen_US

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