R. Capelletti, M. G. Bridelli, M. Friggeri, G. Ruani, R. Foeldvari, L. Kovacs, A. Watterich

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The ITC technique is exploited to search dipolar defects induced in LiF by Ti, whose valence state is not well known. ITC spectra (78-350 K) exhibit at least one peak, at 235 K. The amplitude of this peak increases with nominal Ti-concentration and annealing temperature; its shape does not depend on thermal treatment, Ti-concentration, or dopant type (TiO//2 or Li//2 TiF//6 ); it is not a single peak; and it is very weak in air-grown crystals. A critical analysis of ITC data compared with optical and EPR spectra suggests that Ti**3** plus compensated by two cation vacancies is responsible for the 235 K peak.

Original languageEnglish
Number of pages5
Publication statusPublished - Dec 1 1985

ASJC Scopus subject areas

  • Engineering(all)

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    Capelletti, R., Bridelli, M. G., Friggeri, M., Ruani, G., Foeldvari, R., Kovacs, L., & Watterich, A. (1985). I. V. V. DIPOLES IN LIF:TI.. 294-298.