1. ![](http://irbiscorp.spsl.nsc.ru/webirbis-htdocs/images/printer.jpg)
|
Magnetic and optical properties and electron paramagnetic resonance of gadolinium-containing oxide glasses / J. . Kliava [et al.]> // J. Phys.: Condens. Matter. - 2003. - Vol. 15, Is. 40. - P. 6671-6681, DOI 10.1088/0953-8984/15/40/005. - Cited References: 30
. - ISSN 0953-8984РУБ Physics, Condensed Matter Рубрики: ABSORPTION-SPECTRA FARADAY-ROTATION SPIN-RESONANCE IONS GD3+ SPECTROSCOPY BEHAVIOR GD-3 Кл.слова (ненормированные): Doping (additives) -- Electronic structure -- Glass -- Lanthanum compounds -- Light absorption -- Magnetic susceptibility -- Oxides -- Paramagnetic resonance -- Positive ions -- Rate constants -- Substitution reactions -- Absorption band -- Gadolinium containing oxide glasses -- Positive Weiss constants -- Gadolinium compounds Аннотация: Magnetic susceptibility, electron paramagnetic resonance (EPR) and optical absorption have been studied in a glass system 20La(2)O(3)-22Al(2)O(3)-23B(2)O(3)-35(SiO2 + GeO2) with a part of La2O3 substituted by Gd2O3 in different concentrations. Positive Weiss constants have been found in more heavily doped glasses and ascribed to clustering of Gd3+ ions. Computer simulations of the EPR spectra show that the short-range ordering in the environment of the Gd3+ ions is well preserved. The relative distribution widths of the ligand coordinates are less than 2%. In the more heavily doped glasses the EPR spectra are superpositions of signals arising from isolated ions and ferromagnetic clusters. The increase of Gd3+ concentration is shown to change substantially the strong optical absorption edge while only small changes of f-f absorption band characteristics are observed. This difference is associated with the different effect of the Gd ion clustering on the mechanisms of the strong absorption in the ultraviolet region and the f-f absorption.
WOS, Scopus, Читать в сети ИФ Держатели документа: Univ Bordeaux 1, CPMOH, F-33405 Talence, France SI Vavilov State Opt Inst, St Petersburg 199034, Russia Bar Ilan Univ, Dept Chem, IL-52900 Ramat Gan, Israel Bar Ilan Univ, Dept Phys, IL-52900 Ramat Gan, Israel RAS, SB, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia ИФ СО РАН CPMOH, Universite Bordeaux-I, 33405 Talence Cedex, France L V Kirensky Inst. of Physics, SB RAS, Krasnoyarsk 660036, Russian Federation Bar-Ilan University, Department of Physics, Ramat-Gan 52900, Israel Bar-Ilan University, Department of Chemistry, Ramat-Gan 52900, Israel S V Vavilov State Optical Institute, St Petersburg 199034, Russian Federation Доп.точки доступа: Kliava, J.; Edelman, I. S.; Эдельман, Ирина Самсоновна; Potseluyko, A. M.; Petrakovskaja, E. A.; Петраковская, Элеонора Анатольевна; Berger, R.; Bruckental, I.; Yeshurun, Y.; Malakhovskii, A. V.; Малаховский, Александр Валентинович; Zarubina, Y. V. } Найти похожие
|