About: Defects Studies of ZnO Single Crystals Prepared by Various Techniques

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://przyrbwn.icm.edu.pl/APP/PDF/125/a125z3p18.pdf
Description	The aim of the present work was a comparison of defects in ZnO crystals grown by various techniques available nowadays, namely hydrothermal growth, pressurized melt, Bridgman method growth and vapor phase growth. Positron annihilation spectroscopy was employed as a principal tool for characterization of defects in ZnO crystals grown by above mentioned various techniques. ZnO crystals can be divided into two groups: (i) hydrothermal grown crystals, which exhibit positron lifetime of 179-182 ps and (ii) ZnO crystals grown by the other techniques (pressurized melt, Bridgman method, vapor phase growth) which are characterized by the lower lifetimes falling in the range of 160-173 ps. Comparison of experimental data with ab initio theoretical calculations revealed that HT grown ZnO crystals contains Zn vacancies associated with hydrogen atom in a bond-centered site. On the other hand, ZnO crystals prepared by other techniques contain most probably stacking faults created by stresses induced by temperature gradients in the melt. The aim of the present work was a comparison of defects in ZnO crystals grown by various techniques available nowadays, namely hydrothermal growth, pressurized melt, Bridgman method growth and vapor phase growth. Positron annihilation spectroscopy was employed as a principal tool for characterization of defects in ZnO crystals grown by above mentioned various techniques. ZnO crystals can be divided into two groups: (i) hydrothermal grown crystals, which exhibit positron lifetime of 179-182 ps and (ii) ZnO crystals grown by the other techniques (pressurized melt, Bridgman method, vapor phase growth) which are characterized by the lower lifetimes falling in the range of 160-173 ps. Comparison of experimental data with ab initio theoretical calculations revealed that HT grown ZnO crystals contains Zn vacancies associated with hydrogen atom in a bond-centered site. On the other hand, ZnO crystals prepared by other techniques contain most probably stacking faults created by stresses induced by temperature gradients in the melt. (en)
Title	Defects Studies of ZnO Single Crystals Prepared by Various Techniques Defects Studies of ZnO Single Crystals Prepared by Various Techniques (en)
skos:prefLabel	Defects Studies of ZnO Single Crystals Prepared by Various Techniques Defects Studies of ZnO Single Crystals Prepared by Various Techniques (en)
skos:notation	RIV/00216208:11320/14:10288487!RIV15-MSM-11320___
http://linked.open...avai/riv/aktivita	I P S
http://linked.open...avai/riv/aktivity	I, P(GAP108/11/0958), S
http://linked.open...iv/cisloPeriodika	3
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Lukáč, František Melikhova, Oksana Procházka, Ivan Čížek, Jakub
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
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	10004
http://linked.open...ai/riv/idVysledku	RIV/00216208:11320/14:10288487
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	positron trapping; planar defects; grain boundary; zirconia; stacking fault; zinc oxide (en)
http://linked.open.../riv/klicoveSlovo	grain boundary planar defects zinc oxide zirconia positron trapping stacking fault
http://linked.open...odStatuVydavatele	PL - Polská republika
http://linked.open...ontrolniKodProRIV	[F5B805F9F01F]
http://linked.open...i/riv/nazevZdroje	Acta Physica Polonica A
http://linked.open...in/vavai/riv/obor	BM
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	6 (xsd:int)
http://linked.open...vavai/riv/projekt	Investigation of point defects in ZnO and their interaction with hydrogen and nitrogen
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	125
http://linked.open...iv/tvurceVysledku	Anwand, W. Brauer, G. Lukáč, František Melikhova, Oksana Procházka, Ivan Čížek, Jakub
http://linked.open...ain/vavai/riv/wos	000339826300019
issn	0587-4246
number of pages	4 (xsd:int)
http://bibframe.org/vocab/doi	10.12693/APhysPolA.125.748
http://localhost/t...ganizacniJednotka	11320

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