Electron-nuclear double-resonance investigations of V/sub OD/ centers in CaO

Journal Article · Mon Dec 01 04:00:00 EST 1975 · Phys. Rev., B, v. 12, no. 11, pp. 4766-4770

OSTI ID:4012817

Abraham, M M; Chen, Y; Unruh, W P

Single crystals of CaO doped with deuterium have been grown by the submerged-arc-fusion method and V/sub OD/ centers were produced by $gamma$ irradiation at 77$sup 0$K. EPR and electron-nuclear double-resonance measurements yield the following spin Hamiltonian parameters: g/sub parallel/ = 2.0020(2), g/sub perpendicular/ = 2.0730(2), A/sub parallel/ = +0.423(1) MHz, A/ sub perpendicular/ = -0.212(1) MHz, and P = +0.188(1) MHz. Relative signs were obtained experimentally and the assignment of the absolute signs follows from the assumption of a positive dipolar interaction of the hole with the reported positive deuterium nuclear moment. The magnetic hyperfine interaction is essentially all dipolar and implies a slight outward (100) relaxation of the axial oxygens. The measured electric field gradient at the deuteron is compared with the corresponding case in MgO and with other substitutional-impurity trapped- hole centers in the cubic oxides. (auth)

• Research Organization: Oak Ridge National Lab., TN
• NSA Number: NSA-33-026499
• OSTI ID: 4012817
• Journal Information: Phys. Rev., B, v. 12, no. 11, pp. 4766-4770, Journal Name: Phys. Rev., B, v. 12, no. 11, pp. 4766-4770; ISSN PLRBA
• Country of Publication: United States
• Language: English

Related Subjects

*CALCIUM OXIDES-- PHYSICAL RADIATION EFFECTS
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Cermets & Refractories-- Radiation Effects
DEUTERIUM
DOPED MATERIALS
ELECTRIC FIELDS
ELECTRON SPIN RESONANCE
ENDOR
HAMILTONIANS
HYPERFINE STRUCTURE
MONOCRYSTALS
N50140* --Metals
Ceramics
& Other Materials--Ceramics & Cermets--Radiation Effects
V CENTERS