Origin of color centers in the flux-grown europium gallium garnet

Описание

Тип публикации: статья из журнала

Год издания: 2008

Идентификатор DOI: 10.1063/1.2902365

Ключевые слова: Absorption, Europium alloys, Garnets, Ultraviolet radiation, Calcium-free flux, Flux-grown europium gallium garnet, Color centers

Аннотация: Europium gallium garnet (EuGG) single crystals were grown from fluxes with various contents. Optical absorption spectra of EuGG grown from a flux containing calcium show an additional band in the ultraviolet and blue regions of the spectra as compared to the case of a calcium-free flux. Mossbauer spectra of the samples grown from tПоказать полностьюhe fluxes with different additives show no signs of other valence states of the europium ions except for 3+. However, they indicate changes in the crystal field due to the entrance of additive ions. The nature of the additional absorption must be the same as that for calcium-doped gadolinium gallium garnet, i.e., anion vacancies. Mossbauer isotope shifts and quadrupole splitting for EuGG are determined. (C) 2008 American Institute of Physics.

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Издание

Журнал: JOURNAL OF APPLIED PHYSICS

Выпуск журнала: Vol. 103, Is. 8

ISSN журнала: 00218979

Место издания: MELVILLE

Издатель: AMER INST PHYSICS

Авторы

  • Aleksandrovsky A.S. (LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660079, Russia)
  • Arkhipkin V.G. (LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660079, Russia)
  • Bezmaternykh L.N. (LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660079, Russia)
  • Gudim I.A. (LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660079, Russia)
  • Krylov A.S. (LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660079, Russia)
  • Vagizov F. (Texas A&M Univ, Dept Phys, College Stn, TX 77840 USA)

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