PL EN


Preferences help
enabled [disable] Abstract
Number of results
2010 | 117 | 1 | 161-165
Article title

Point Defects in Magnesium Aluminates Spinel Ceramics Doped with Lithium Fluoride

Content
Title variants
Languages of publication
EN
Abstracts
EN
The nature and topological distribution of optical centers within various regions of hot pressed disks of transparent magnesium aluminates spinel ceramics doped with LiF were studied. In the optical absorption spectra of this type of ceramic, bands were revealed at 4.75 eV and 5.3 eV, which were identified with F^{+}- and F-centers, respectively. Because both bands are formed by anionic vacancies which captured one or two electrons, the topological distribution of anionic vacancies was determined. The band at 5.65 eV was also found which is tentatively identified with complex centers of anionic vacancies that capture fluorine ions and electrons. Using X-ray irradiation the variety of absorption bands of hole centers related to cationic vacancies was established. The spatial distribution of cationic vacancies within the ceramic disk was also determined.
Keywords
EN
Contributors
author
  • Department of Physics and Technology, V.N. Karazin Kharkiv National University, Svoboda Sq. 4, 61077 Kharkiv, Ukraine
author
  • Department of Physics and Technology, V.N. Karazin Kharkiv National University, Svoboda Sq. 4, 61077 Kharkiv, Ukraine
author
  • Department of Physics and Technology, V.N. Karazin Kharkiv National University, Svoboda Sq. 4, 61077 Kharkiv, Ukraine
author
  • Colorado Center for Advanced Ceramics, Metallurgical and Materials Engineering Department, Colorado School of Mines, Golden, CO 80401, USA
References
  • 1. D.C. Harris, Materials for Infrared Windows and Domes, Properties and Performance, SPIE Optical Engineering Press, Bellingham, Washington 1999
  • 2. M.C.L. Patterson, A.A. DiGiovanni, L. Fehrebacher, D.W. Roy, in: Window and Dome Technologies VIII. SPIE AeroSence, Conf. Proceed., Orlando FL 2003, p. 178
  • 3. T.A. Bazilevskaya, V.T. Gritsyna, D.V. Orlinski, L.V. Udalova, A.V. Voitsenya, J. Nucl. Mater. 253, 133 (1998)
  • 4. G. Gigle, P. Patel, P. Patterson, D. Blodgett, D. Duncan, D. Hahn, J. Am. Ceram. Soc. 88, 2747 (2005)
  • 5. H.-J. Kleebe, I.E. Reimanis, R.L. Cook, Ceram. Trans. 157, 61 (2005)
  • 6. K. Rozenburg, I.E. Reimanis, H.-J. Kleebe, R.L. Cook, J. Am. Ceram. Soc. 90, 2038 (2007)
  • 7. I.E. Reimanis, H.-J. Kleebe, Int. J. Mat. Res. 98, 1237 (2007)
  • 8. K. Rozenburg, I.E. Reimanis, H.-J. Kleebe, R.L. Cook, J. Am. Ceram. Soc. 91, 444 (2008)
  • 9. V.T. Gritsyna, I.V. Afanasyev-Charkin, Yu.G. Kazarinov, K.E. Sickafus, Nucl. Instrun. Methods Phys. Res. B 218, 264 (2004)
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv117z131kz
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.