• DocumentCode
    1604214
  • Title

    Sweeping investigations on grown-in Al-Li+ and Al-OH centers in natural crystalline quartz

  • Author

    Bahadur, Harish

  • Author_Institution
    Nat. Phys. Lab., New Delhi, India
  • fYear
    1992
  • Firstpage
    657
  • Lastpage
    666
  • Abstract
    Near-infrared absorption in the region of 3100-3700 cm-1 is used to study a variety of optically clear samples of natural quartz crystals. The crystals are hydrogen-rich and hydrogen-lean with approximately the same or varying aluminium concentration. The alkali concentration in hydrogen-rich samples is much higher than that in hydrogen-lean samples. The very narrow variation in the strength of centers in all small samples suggests that Al-OH- centers in natural quartz become stable only after a certain maximum Al-Li+ concentration. This concentration appears to be independent of the origin of the growth and reflects a characteristic feature of the growth mechanism of natural quartz crystals
  • Keywords
    OH--centres; impurity and defect absorption spectra of inorganic solids; infrared spectra of inorganic solids; point defects; quartz; 3100 to 3700 cm-1; alkali concentration; centers; crystalline quartz; growth mechanism; hydrogen-lean crystals; hydrogen-rich crystals; near-IR absorption; optically clear samples; Aerospace industry; Aerospace materials; Aluminum; Crystalline materials; Crystallization; Crystals; Impurities; Oscillators; Protons; Stability;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Frequency Control Symposium, 1992. 46th., Proceedings of the 1992 IEEE
  • Conference_Location
    Hershey, PA
  • Print_ISBN
    0-7803-0476-4
  • Type

    conf

  • DOI
    10.1109/FREQ.1992.270048
  • Filename
    270048
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1604214