Determination of the atomic coordinations of the substituted light atoms in materials

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dc.contributor.authorOzkendir, Osman Murat
dc.date.accessioned2025-03-17T12:27:47Z
dc.date.available2025-03-17T12:27:47Z
dc.date.issued2019
dc.departmentTarsus Üniversitesi
dc.description.abstractLight atoms' substitution into a heavy atom coordination in materials can be a difficult process for analysis. Light atoms, which have close ionic radii with the target atom, may sit at the heavy atom's coordination. In such a case, scientist may not differ the signals from the heavy and light atom to differentiate the exact atomic coordinations of the substituted atom. As an example study, boron substitution into the chromium coordinations is studied. In the samples with boron substitution more than 10%, they became polycrystalline material where boron and chromium tended to own their own crystal structures. However, in the samples with lower substitution amounts, for x=0.05 and 0.10, boron atoms seem to sit in the Cr coordinations without any trace from boron atoms. The boron signals in the XRD patterns has not been detected, and accordingly some hypothesis put forwarded, such as; boron sat in the Cr coordinations or cause defects/impurities that can not be detected in patterns due to low amount of the light atoms. Studies were carried on a series of Li-ion battery cathode materials with the general formula LiCr1-xBxO2. The analysis were performed by the x-ray absorption fine structure (XAFS) technique. As a result of the study, 10% boron substitution was determined as a treshold to protect the LiCrO2 crystal structure.
dc.identifier.endpage360
dc.identifier.issn1454-4164
dc.identifier.issn1841-7132
dc.identifier.issue5-6
dc.identifier.scopus2-s2.0-85089621793
dc.identifier.scopusqualityQ4
dc.identifier.startpage357
dc.identifier.urihttps://hdl.handle.net/20.500.13099/2445
dc.identifier.volume21
dc.identifier.wosWOS:000495887400011
dc.identifier.wosqualityQ4
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorOzkendir, Osman Murat
dc.language.isoen
dc.publisherNatl Inst Optoelectronics
dc.relation.ispartofJournal of Optoelectronics and Advanced Materials
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20250316
dc.subjectCrystal structure
dc.subjectElectronic structure
dc.subjectLi-ion battery
dc.subjectOxides
dc.subjectXAFS
dc.titleDetermination of the atomic coordinations of the substituted light atoms in materials
dc.typeArticle

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