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Luminescent impurity ion probe and low temperature phase of SrTiO.sub.3./sub. nanoparticles

SYSNO ASEP	0336486
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Luminescent impurity ion probe and low temperature phase of SrTiO₃ nanoparticles
Title	Luminiscenční sonda iontů příměsi a nízkoteplotní fáze nanočástic SrTiO₃.
Author(s)	Potůček, Zdeněk (FZU-D)_{RID, ORCID} Trepakov, Vladimír (FZU-D)_RID Makarova, Marina (FZU-D)_{RID, ORCID} Sazama, Petr (UFCH-W)_{RID, ORCID} Badalyan, A. G. (RU) Dejneka, Alexandr (FZU-D)_{RID, ORCID} Jastrabík, Lubomír (FZU-D)_{RID, ORCID}
Number of authors	7
Source Title	Materials Science and Technology - ISSN 0267-0836 Roč. 25, č. 11 (2009), s. 1334-1340
Number of pages	7 s.
Language	eng - English
Country	GB - United Kingdom
Keywords	strontium titanate ; nanocrystals ; impurity ions ; optical absorption ; zero-phonon line
Subject RIV	BM - Solid Matter Physics ; Magnetism
R&D Projects	GA202/08/1009 GA ČR - Czech Science Foundation (CSF)
	KJB100100703 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
	KAN301370701 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
	1M06002 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
CEZ	AV0Z10100522 - FZU-D (2005-2011)
	AV0Z40400503 - UFCH-W (2005-2011)
UT WOS	000272049300009
DOI	10.1179/026708309X12474766656416
Annotation	Photoluminescence of Cr3+ impurity ions was studied on nanocrystalline SrTiO3:Cr(0.1%) powders with an average particle size between 13 and 100 nm. The position of the zero-phonon emission R-line of the octahedral Cr3+ centres shifted to higher energies with decreasing particle size. The temperature shift of the R-line position appeared for all powders nearly the same as the 'dielectric related' one in the bulk crystals, evidencing that SrTiO3 retains quantum paraelectric behaviour down to a particle size of about 10 nm.
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2010

Number of the records: 1