ELECTRON SPIN RESONANCE IN ELECTRON-IRRADIATED DIAMOND

Journal Article · Sat Dec 01 04:00:00 EST 1962 · Phil. Mag.

DOI:https://doi.org/10.1080/14786436208214468· OSTI ID:4758023

Faulkner, E A; Lomer, J N

The room temperature electron spin resonance spectrum of diamonds irradiated by 2-Mev electrons is measured at a frequency of 9.5 kMc. The spectrum is analyzed into four systems, all of which show a g value within 0.2% of the freespin value, namely: a single isotropic line with a width of about 5 gauss; an anlsotropic system of up to 24 lines of width about 5 gauss, with a maximum splitting of plus or minus 1.5 kgauss and symmetry axes near to the (221) directions; an anisotropic system of up to 8 lines of width 25 to 50 gauss with a maximum splitting of plus or minus 1.5 kgauss and symmetry axes along the (100) directions; and a broad absorption with a complicated anisotropic structure, showing a maximum splitting of plus or minus 150 gauss. It is suggested that the centers giving rise to the second and third of these systems consist of two localized components, and that the splitting arises from magnetic dipolar interaction between them. The geometry of the axes can be explained if it is assumed that one of the components is a double defect such as a di- interstitial with the spin acting as if localized at its center. The fourth system is interpreted as arising from vacancy-interstitial pairs of various separations and orientations. (auth)

• Research Organization: Univ. of Reading, Berks, Eng.
• Sponsoring Organization: USDOE
• NSA Number: NSA-17-012729
• OSTI ID: 4758023
• Journal Information: Phil. Mag., Journal Name: Phil. Mag. Vol. Vol: (8), 7
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ABSORPTION
ANISOTROPY
ATOMIC MODELS
DEFECTS
DIAMONDS
ELECTRONS
INTERSTITIALS
IRRADIATION
LATTICES
METALS, CERAMICS, AND OTHER MATERIALS
RADIATION DOSES
RESONANCE
SPECTRA
TEMPERATURE
VACANCIES