INFRARED ABSORPTION OF DEFECTS IN QUARTZ

Journal Article · Wed Jun 01 04:00:00 UTC 1960 · Phys. and Chem. Solids

DOI:https://doi.org/10.1016/0022-3697(60)90017-2· OSTI ID:4172810

Wood, D L

A number of sharp absorption bands in the infrared spectrum of crystalline alpha -quartz between 3200 and 3655 cm/sup -1/ were assigned to defects in the lattice. Defects containing water may cause a broad absorption through this region of the spectrum in very imperfect parts of certain crystals, but it does not contribute to the sharp bands observed. One band at 3581 cm/sup - 1/ is probably due to the OH stretching vibration of a proton defect, but the other peaks are not. Treatments of the crystal involving x irradiation, heat bleaching, annealing or heating in an electric field strongly affect the intensities of the bands observed, and it is concluded that the bands originate in color centers with an electronic origin. Probably more than one type of center is involved. No correlation with the visible color centers of smoky quartz or amethyst is observed. Interstitial foreign atoms play an important role in the formation of the infrared centers but vacancies or interstitial Si or O atoms are probably not involved. Although much information relating to the infrared color centers is available the full details of their structure are not yet known. (auth)

• Research Organization: Bell Telephone Labs., Inc., Murray Hill, N.J.
• NSA Number: NSA-14-022143
• OSTI ID: 4172810
• Journal Information: Phys. and Chem. Solids, Journal Name: Phys. and Chem. Solids Vol. Vol: 13
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ABSORPTION
ANNEALING
ATOMS
BLEACHING
COLOR
COLOR CENTERS
CRYSTALS
DEFECTS
ELECTRIC FIELDS
ELECTRONS
FREE RADICALS
HEATING
HYDROXIDES
IMPURITIES
INFRARED RADIATION
INTERSTITIALS
IRRADIATION
LATTICES
LIGHT
METALS, CERAMICS, AND OTHER MATERIALS
OSCILLATIONS
OXYGEN
PROTONS
QUARTZ
RADIATION EFFECTS
SILICON
SPECTRA
STABILITY
VACANCIES
WATER
X RADIATION