Colour centre in YAG: Cr 3+  crystals | Zendy

Kvapil S. | Zendy; Kvapil Jirí | Zendy; Mánek B. | Zendy; Perner B. | Zendy; Sevastyanov B. K. | Zendy; Orekhova V. P. | Zendy

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Colour centre in YAG: Cr 3+ crystals

Author(s) -

Kvapil S.,

Kvapil Jirí,

Mánek B.,

Perner B.,

Sevastyanov B. K.,

Orekhova V. P.

Publication year - 1982

Publication title -

crystal research and technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.377

H-Index - 64

eISSN - 1521-4079

pISSN - 0232-1300

DOI - 10.1002/crat.2170170215

Subject(s) - octahedron , czochralski method , absorption (acoustics) , materials science , atmosphere (unit) , crystallography , doping , analytical chemistry (journal) , absorption spectroscopy , chemistry , optics , crystal structure , optoelectronics , physics , composite material , chromatography , thermodynamics

YAG crystals doped with 0.01 wt% Cr were grown by Czochralski method using 98% Ar + 2% H 2 protective atmosphere. Four colour varieties of the crystals were prepared in the dependence of the Al 2 O 3 :Y 2 O 3 ratio in the melt and the sign of electrical potential above the melt level. New absorption bands were attributed to the O − centre (400 to 480 nm), F centre (357, 500, and 833 nm) or Cr 3+ at another site than octahedral (455, and 612 nm).

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