F‐Centres in Alkaline Earth Fluorides | Zendy

Feltham P. | Zendy

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F‐Centres in Alkaline Earth Fluorides

Author(s) -

Feltham P.

Publication year - 1967

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.19670200230

Subject(s) - alkaline earth metal , fluorine , lattice (music) , ion , lattice energy , atomic physics , electron , isomorphism (crystallography) , chemistry , crystallography , inorganic chemistry , crystal structure , physics , alkali metal , quantum mechanics , organic chemistry , acoustics

The ls‐2p transition energy of electrons trapped at fluorine ion vacancies in BaF 2 is calculated by means of a continuum approximation, allowing for polarisation. The lattice potential is determined from that previously [8] derived in the evaluation of the F‐centre absorption frequency in CaF 2 , taking into account lattice isomorphism and differences in the core structures of the respective cations. The calculated value of the energy agrees well with that obtained in additively coloured BaF 2 crystals [1] by ESR.

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