Vacuum ultraviolet and X-ray emission spectroscopy of anion and cation excitons in oxide crystals / Ivanov V. Yu.,Pustovarov V. A.,Kikas A.,Kaeaembre T.,Kuusik I.,Kirm M.,Zinin E. I. // JOURNAL OF SURFACE INVESTIGATION-X-RAY SYNCHROTRON AND NEUTRON TECHNIQUES. - 2012. - V. 6, l. 1. - P. 100-105.

ISSN/EISSN:

1027-4510 / нет данных

Type:

Article

Abstract:

The results of a combined experimental investigation into the radiative relaxation of anion and cation excitons during selective vacuum ultraviolet-(up edge) and soft X-ray (core) excitation of berylliumcontaining BeO, Be2SiO4 and La2Be2O5 crystals are presented. They indicate that the relaxation of anion and cation excitons in multi-component oxides occurs in the same local fragments of the crystal lattice, due to their higher predisposition (in comparison with other fragments) to short-lived distortions. It has been found that in La2Be2O5 crystals characterized by a considerable difference in the ionic radii of cations (beryllium and lanthanum), the beryllium-oxygen tetrahedra do not participate in exciton relaxation processes.

Author keywords:

ELECTRONIC EXCITATIONS; INTRINSIC LUMINESCENCE; 1S EDGE; LA2BE2O5; BE2SIO4; HASYLAB; BEO

DOI:

10.1134/S1027451012020085

Web of Science ID:

ISI:000300515800018

Соавторы в МНС:

Другие поля

Поле	Значение
Month	FEB
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
Keywords-Plus	ELECTRONIC EXCITATIONS; INTRINSIC LUMINESCENCE; 1S EDGE; LA2BE2O5; BE2SIO4; HASYLAB; BEO
Research-Areas	Physics
Web-of-Science-Categories	Physics, Condensed Matter
Author-Email	ivy@dpt.ustu.ru
ResearcherID-Numbers	Kaambre, Tanel/K-3980-2014 Kirm, Marco/M-1533-2016 Kikas, Arvo/H-3136-2015
ORCID-Numbers	Kaambre, Tanel/0000-0003-1453-4663 Kirm, Marco/0000-0002-1833-6894
Funding-Acknowledgement	Estonian Scientific Foundation {[}ETF7615]; FP6 Framework Program of the community of the North and European countries
Funding-Text	The work was supported in part by the grant of the Estonian Scientific Foundation ETF7615 and the FP6 Framework Program of the community of the North and European countries within the project ``Scientific studies with the use of synchrotrons and free-electron lasers{''}.
Number-of-Cited-References	14
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	7
Journal-ISO	J. Surf. Ingestig.-X-Ray Synchro.
Doc-Delivery-Number	895SE