Growth and characterization of PbSe microcrystals via the pulsed laser welding technique

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dc.authoridAtef Fayez Qasrawi / 0000-0001-8193-6975en_US
dc.authorscopusidAtef Fayez Qasrawi / 6603962677en_US
dc.authorwosidAtef Fayez Qasrawi / R-4409-2019en_US
dc.contributor.authorAlkhamisi, Manal M.
dc.contributor.authorKhanfar, Hazem K.
dc.contributor.authorAlgarni, Sabah E.
dc.contributor.authorQasrawi, Atef Fayez
dc.date.accessioned2022-12-06T06:36:03Z
dc.date.available2022-12-06T06:36:03Z
dc.date.issued2022en_US
dc.departmentİstinye Üniversitesi, Mühendislik ve Doğa Bilimleri Fakültesi, Elektrik-Elektronik Bölümüen_US
dc.description.abstractHerein lead selenide crystals are fabricated by the pulsed laser welding (PLW) technique within 2 min. The effect of the pulse width on the crystallinity, surface morphology, structural parameters, compositional stoichiometry, electric resistivity and dielectric constant is considered. It is observed that the PLW technique allowed the growth of the crystals in a short period of time. The grown PbSe crystals are mostly cubic containing tetragonal SeO2 as a minor phase. Selenium oxide presented due to the surface oxidation of PbSe after exposing the crystals to air. Remarkable decreases in the electrical resistivity and increase in the dielectric constant by more than two orders of magnitude are achieved as the pulse width increases from 10 to 50 ms. It is observed that the optimum pulse width revealing the highest dielectric constant value is 30 ms. For these samples, a negative capacitance effect is observed for ac signals of frequencies larger than 700 MHz. In addition, analyzing the microwave cut-off frequency spectra for an imposed signal of low amplitude displayed cut-off frequency values larger than 100 GHz at the point where negative capacitance dominates and ac conductance shows a maxima. The features of the PbSe crystals which are prepared in 2 min nominate them for use as negative capacitance sources and band filters suitable for 6G technologies.en_US
dc.identifier.citationAlkhamisi, M. M., Khanfar, H. K., Qasrawi, A. F., & Algarni, S. E. (2022). Growth and characterization of PbSe microcrystals via the pulsed laser welding technique. Applied Physics A, 128(12), 1-10.en_US
dc.identifier.doi10.1007/s00339-022-06174-9en_US
dc.identifier.issn0947-8396en_US
dc.identifier.issn1432-0630en_US
dc.identifier.issue12en_US
dc.identifier.scopus2-s2.0-85142481382en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.urihttp://dx.doi.org/10.1007/s00339-022-06174-9
dc.identifier.urihttps://hdl.handle.net/20.500.12713/3417
dc.identifier.volume128en_US
dc.identifier.wosWOS:000887000800007en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorQasrawi, Atef Fayez
dc.language.isoenen_US
dc.publisherSPRINGER HEIDELBERGen_US
dc.relation.ispartofAPPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSINGen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectPbSeen_US
dc.subjectPulsed laser weldingen_US
dc.subjectNegative capacitanceen_US
dc.subjectMicrowaveen_US
dc.subject6G technologyen_US
dc.titleGrowth and characterization of PbSe microcrystals via the pulsed laser welding techniqueen_US
dc.typeArticleen_US

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