Ar CVD metodi sintezētu dimanta kristālu Ramana spektroskopija

6533b837fe1ef96bd12a2bb6

RESEARCH PRODUCT

Ar CVD metodi sintezētu dimanta kristālu Ramana spektroskopija

Alise Podelinska

subject

dimants defekts korelācija Fizika Ramana spektroskopija CVD

description

Bakalaura darba ietvaros tika apgūti Ramana spektrometra darbības principi, kā arī tika apgūta prasme mērīt un apstrādāt ar Ramana spektrometru pētāma materiāla Ramana spektru, tādējādi analizējot attiecīgā materiāla īpašības un to iespējamu pielietojumu. CVD dimanta kristālu paraugiem, kas tika audzēti uz Si pamatnes disku virsmām, tika izmērīti un savstarpēji salīdzināti Ramana spektri gan paraugu virsmas mikroskopisko telpisko defektu tuvumā, gan attālumā no tiem. Pēc iegūto joslu novietojumiem Ramana spektros tika analizēta šo defektu izcelsme, kā arī ietekme uz parauga īpašībām. Tika pētīta korelācija starp iegūtiem Ramana spektru parametriem – joslas pusplatumu un joslas pozīciju. Tika analizēti parametru izmaiņas cēloņi. Izmantojot Voigta funkciju, tika analizēti dimanta parauga 1330 cm-1 joslas parametri Lorenca un Gausa funkcijām. Iegūtie rezultāti ļauj noteikt optimālos eksperimenta nosacījumus, lai iegūtu īsto dimanta joslas pusplatumu.

year	journal	country	edition	language
2021-01-01

https://dspace.lu.lv/dspace/handle/7/55909

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