Thermally Stimulated Discharge Currents in Pure and Doped Sodium Yttrium Fluoride | Zendy

Shareefuddin Md. | Zendy; Chary M. Narasimha | Zendy

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Thermally Stimulated Discharge Currents in Pure and Doped Sodium Yttrium Fluoride

Author(s) -

Shareefuddin Md.,

Chary M. Narasimha

Publication year - 1993

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.2170280220

Subject(s) - yttrium , doping , space charge , materials science , polarization (electrochemistry) , analytical chemistry (journal) , dipole , sodium fluoride , fluoride , spectral line , activation energy , atomic physics , chemistry , inorganic chemistry , oxide , optoelectronics , organic chemistry , physics , quantum mechanics , astronomy , metallurgy , electron

The thermally stimulated discharge currents (TSDC) of pure NaYF 4 , and NaYF 4 doped with 0.5 mole% Sm (in the form of SmF 3 ) have been studied as function of polarizing temperature and polarizing field strength at a constant heating rate (β) = 0.05 Ks −1 . The activation energies, relaxation parameters and charge were evaluated. The origin of TSDC spectra in NaYF 4 : Sm is attributed to space charge polarization. Whereas both dipolar and space charge process are found to operate in NaYF 4 sample.

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