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The influence of ion implantation of iron on the surface, electric and magnetic properties of high density polyethylene

dc.contributor.advisorAdnađević, Borivoj
dc.contributor.otherNenadović, Miloš
dc.contributor.otherCvjetićanin, Nikola
dc.creatorKisić, Danilo D.
dc.date.accessioned2021-03-17T10:28:23Z
dc.date.available2021-03-17T10:28:23Z
dc.date.issued2020-12-28
dc.identifier.urihttp://eteze.bg.ac.rs/application/showtheses?thesesId=7999
dc.identifier.urihttps://fedorabg.bg.ac.rs/fedora/get/o:23376/bdef:Content/download
dc.identifier.urihttp://vbs.rs/scripts/cobiss?command=DISPLAY&base=70036&RID=33355529
dc.identifier.urihttps://nardus.mpn.gov.rs/handle/123456789/18082
dc.description.abstractU ovom radu, ispitivana su površinska električna i magnetna svojstva gvožđe-polietilen implantata, sintetisanih jonskom implantacijom pri različitim dozama, u opsegu od 5×1016 jona/cm2 do 5×1017 jona/cm2, i pri energiji od 95 keV. Raderfordovom spektroskopijom rasejanja, Rendgenskom fotoelektronskom spektroskopijom, energijskom disperzivnom spektroskopijom i infracrvenom spektroskopijom, utvrđene su znatne promene sastava površinskog sloja, koje se ogledaju u znatnom udelu gvožđa i nastajanju novih organskih jedinjenja. Mikroskopija atomskih sila je pokazala da je implantacija dovela do promena morfologije površine, i znatno veće površinske hrapavosti. Iz analize transmisionom elektronskom mikroskopijom, utvrđeno je da nakon implantacije dolazi do formiranja nanočestica gvožđa, a da nakon implantacije dozom od 5×1017 jona/cm2 dolazi do formiranja kontinualnog sloja. Merenja slojne otpornosti su pokazala da implantacija gvožđa dovodi do znatnog poboljšanja provodnosti. Magnetna merenja su pokazala da do pojave feromagnetne faze dolazi nakon implantacije dozama od 2×1017 jona/cm2 i 5×1017 jona/cm2. Iz merenja spektroskopskom elipsometrijom se može zaključiti da je nakon implatacije povećan indeks prelamanja i koeficijent apsorpcije u zoni implantacije. Spektroskopija u ultraljubičastoj i vidljivoj oblasti je ukazala na pojavu lokalizovane površinske plazmonske rezonancije čestica gvožđa. Utvrđeno je da površinske energija raste sa implantacionom dozom do doze od 1×1017 jona/cm2, a potom se smanjuje sa povećanjem doze. Pokazano je da su promene hemijskog sastava i morfologije, povezane sa promenama površinskih, električnih i magnetnih svojstava.sr
dc.description.abstractIn this study, the surface electrical and magnetic properties of iron-polyethylene implants, synthesized by ion implantation at different fluences, in the range from 5×1016 ions/cm2 to 5×1017 ions/cm2, and at the energy of 95 keV, were investigated. Rutherford backscattering spectroscopy, X - ray photoelectron spectroscopy, energy dispersive spectroscopy, and infrared spectroscopy have revealed significant changes in the composition of the surface layer, which are reflected in a significant proportion of iron and the formation of new organic compounds. Atomic force microscopy showed that implantation led to changes in surface morphology, and significantly higher surface roughness. From the analysis by transmission electron microscopy, it was determined that after implantation, iron nanoparticles are formed, and that after implantation with a fluence of 5×1017 ions/cm2, a continuous layer is formed. Sheet resistivity measurements have shown that iron implantation leads to a significant improvement in conductivity. Magnetic measurements have shown the occurence of the ferromagnetic phase after implantation at fluences of 2×1017 ions/cm2 and 5×1017 ions/cm2. From the measurements by spectroscopic ellipsometry, it can be concluded that after implantation, the refractive index and the absorption coefficient in the implantation zone increased. Ultraviolet and visible spectroscopy indicated the appearance of localized surface plasmon resonance of iron particles. It was determined that the surface energy increases with the implantation fluence to a fluence of 1×1017 jona/cm2, and then decreases with increasing fluence. It was indicated that the changes in chemical composition and morphology are related to changes in surface, electrical and magnetic properties.en
dc.formatapplication/pdf
dc.languagesr
dc.publisherУниверзитет у Београду, Факултет за физичку хемијуsr
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45005/RS//
dc.rightsAutorstvo-Nekomercijalno-Bez prerade 3.0 Srbija (CC BY-NC-ND 3.0)
dc.sourceУниверзитет у Београдуsr
dc.subjectjonska implantacija, gvožđe, polietilen, hemijski sastav, površinska svojstva, električna svojstva, magnetna svojstva, optička svojstvasr
dc.subjection implantation, iron, polyethylene, surface properties, electrical properties, magnetic properties, optical propertiesen
dc.titleUticaj jonske implantacije gvožđa na površinska, električna i magnetna svojstva polietilena velike gustinesr
dc.title.alternativeThe influence of ion implantation of iron on the surface, electric and magnetic properties of high density polyethyleneen
dc.typePhD thesis
dc.identifier.fulltexthttp://nardus.mpn.gov.rs/bitstream/id/69892/IzvestajKomisije28460.pdf
dc.identifier.fulltexthttp://nardus.mpn.gov.rs/bitstream/id/69891/Disertacija.pdf


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