Study of Precipitated Phases in Mn 2+  Singly Doped KBr Crystals by Optical Spectroscopy and EPR | Zendy

de Lucas M. C. Marco | Zendy; Rodríguez F. | Zendy; Moreno M. | Zendy

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Study of Precipitated Phases in Mn 2+ Singly Doped KBr Crystals by Optical Spectroscopy and EPR

Author(s) -

de Lucas M. C. Marco,

Rodríguez F.,

Moreno M.

Publication year - 1992

Publication title -

physica status solidi (b)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.51

H-Index - 109

eISSN - 1521-3951

pISSN - 0370-1972

DOI - 10.1002/pssb.2221720223

Subject(s) - luminescence , octahedron , electron paramagnetic resonance , materials science , doping , excitation , spectroscopy , crystallography , analytical chemistry (journal) , nuclear magnetic resonance , chemistry , optoelectronics , crystal structure , physics , quantum mechanics , chromatography

The aggregation states of Mn 2+ in KBr Mn 2+ doped crystals are investigated using optical techniques. Excitation and luminescence spectra as well as lifetimes are obtained as a function of temperature of different crystals. It is demonstrated that at least three different Mn 2+ precipitates are formed inside the KBr. Two of them contain MnBr 6 4‐ units with slightly distorted octahedral symmetries, while the third one involves two non‐equivalent tetrahedral MnBr 4 2‐ units. These centers exhibit a broad green luminescence band.

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