About: Structural studies of thin Mg films

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://dx.doi.org/10.1088/1742-6596/505/1/012024
Description	In the present work variable energy positron annihilation spectroscopy (VEPAS) was employed for investigation of defects in Mg films. VEPAS characterization was combined with scanning electron microscopy and X-ray diffraction in order to determine grain size and texture respectively. The aim of this study was to examine the effect of deposition temperature and various substrates on structure and defects in Mg films prepared by RF magnetron sputtering. SEM observations revealed that films deposited on sapphire (0001) substrate exhibit always smaller grains than films deposited on amorphous fused silica and silicon (100) substrates, which have comparable grain size. Defect studies by VEPAS showed that positrons in Mg films studied are trapped at misfit dislocations and at vacancy-like defects in grain boundaries. Moreover, the films deposited on a substrate heated at 300 degrees C exhibited lower concentration of defects and larger grain size compared to the films deposited at room temperature. Subsequent annealing at 300 degrees C for 1 h of the films deposited at room temperature causes a slight decrease of defect density due to coarsening of grains. In the present work variable energy positron annihilation spectroscopy (VEPAS) was employed for investigation of defects in Mg films. VEPAS characterization was combined with scanning electron microscopy and X-ray diffraction in order to determine grain size and texture respectively. The aim of this study was to examine the effect of deposition temperature and various substrates on structure and defects in Mg films prepared by RF magnetron sputtering. SEM observations revealed that films deposited on sapphire (0001) substrate exhibit always smaller grains than films deposited on amorphous fused silica and silicon (100) substrates, which have comparable grain size. Defect studies by VEPAS showed that positrons in Mg films studied are trapped at misfit dislocations and at vacancy-like defects in grain boundaries. Moreover, the films deposited on a substrate heated at 300 degrees C exhibited lower concentration of defects and larger grain size compared to the films deposited at room temperature. Subsequent annealing at 300 degrees C for 1 h of the films deposited at room temperature causes a slight decrease of defect density due to coarsening of grains. (en)
Title	Structural studies of thin Mg films Structural studies of thin Mg films (en)
skos:prefLabel	Structural studies of thin Mg films Structural studies of thin Mg films (en)
skos:notation	RIV/00216208:11320/14:10288287!RIV15-MSM-11320___
http://linked.open...avai/riv/aktivita	I P S
http://linked.open...avai/riv/aktivity	I, P(GBP108/12/G043), S
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Melikhova, Oksana Procházka, Ivan Čížek, Jakub Vrátná, Jitka Hruška, Petr
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Karlova v Praze / Matematicko-fyzikální fakulta
http://linked.open...dnocenehoVysledku	47886
http://linked.open...ai/riv/idVysledku	RIV/00216208:11320/14:10288287
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	positron annihilation; Mg films (en)
http://linked.open.../riv/klicoveSlovo	Mg films positron annihilation
http://linked.open...ontrolniKodProRIV	[9109F8869E3B]
http://linked.open...v/mistoKonaniAkce	Munich
http://linked.open...i/riv/mistoVydani	BRISTOL
http://linked.open...i/riv/nazevZdroje	Journal of Physics: Conference Series
http://linked.open...in/vavai/riv/obor	JG
http://linked.open...ichTvurcuVysledku	5 (xsd:int)
http://linked.open...cetTvurcuVysledku	8 (xsd:int)
http://linked.open...vavai/riv/projekt	Interface controlled properties of micro/nanocrystalline materials for advanced structural applications, biodegradable implants and hydrogen storage
http://linked.open...UplatneniVysledku	2014
http://linked.open...iv/tvurceVysledku	Anwand, W. Melikhova, Oksana Procházka, Ivan Čížek, Jakub Hruška, Petr Bulir, J. Lancok, J. Stráská, Jitka
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open...ain/vavai/riv/wos	000338216500024
http://linked.open.../riv/zahajeniAkce	2013-09-15 (xsd:date)
issn	1742-6588
number of pages	4 (xsd:int)
http://bibframe.org/vocab/doi	10.1088/1742-6596/505/1/012024
http://purl.org/ne...btex#hasPublisher	IOP PUBLISHING LTD
http://localhost/t...ganizacniJednotka	11320

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