Raman Scattering and Luminescence of Yttria Nanopowders and Ceramics / Osipov V. V.,Solomonov V. I.,Spirina A. V.,Vovkotrub E. G.,Strekalovskii V. N. // OPTICS AND SPECTROSCOPY. - 2014. - V. 116, l. 6. - P. 946-955.

ISSN/EISSN:

0030-400X / 1562-6911

Type:

Article

Abstract:

We have studied Raman scattering in yttria nanopowders and ceramics that was excited by radiation at wavelengths of 514.5 and 632.8 nm. We show that, in undoped nanopowders and cubic phase of doped yttria ceramics, only the Raman scattering by phonons is observed, with no other Raman scattering centers having been revealed. In nanopowders of the monoclinic phase, we have observed an additional Raman line with a Raman shift of 1093 +/- 4 cm(-1). If all the objects under investigation are excited by the radiation at a wavelength of 514.5 nm, their spectra exhibit four series of photoluminescence lines, two of which (at lambda = 521-523 and 538-564 nm) are emitted by Er3+ ions, ``impurity{''} dopants, while the other two lines (at lambda = 607-635 and 644-684 nm) are emitted by intrinsic centers. Under excitation by the radiation at a wavelength of 632.8 nm, only a series of bands at lambda = 644-684 nm is emitted. In addition to these photoluminescence bands, neodymium-doped ceramics show photoluminescence bands of Nd3+ ions. We have shown that intrinsic luminescence centers, which occur in all the examined specimens, are capable of acting as acceptors with respect to neodymium ions excited to the upper laser level.

Author keywords:

LASERS; OXIDE; ND3+

DOI:

10.1134/S0030400X14040225

Web of Science ID:

ISI:000339948200022

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	JUN
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
EISSN	1562-6911
Keywords-Plus	LASERS; OXIDE; ND3+
Research-Areas	Optics; Spectroscopy
Web-of-Science-Categories	Optics; Spectroscopy
Author-Email	plasma@iep.uran.ru e.vovkotrub@ihte.uran.ru
Funding-Acknowledgement	Russian Foundation for Basic Research {[}11-08-0005a]; Presidium of the Russian Academy of Sciences {[}12-P-2-1011]; Presidium of the Ural Branch of the Russian Academy of Sciences {[}12-S-2-1018]
Funding-Text	This work was supported by the Russian Foundation for Basic Research (project no. 11-08-0005a), the Presidium of the Russian Academy of Sciences (project no. 12-P-2-1011), and the Presidium of the Ural Branch of the Russian Academy of Sciences (project no. 12-S-2-1018).
Number-of-Cited-References	19
Usage-Count-Since-2013	9
Journal-ISO	Opt. Spectrosc.
Doc-Delivery-Number	AM6CF