MOTIONAL NARROWING OF NUCLEAR MAGNETIC-RESONANCE LINES IN MANGANESE-DOPED LITHIUM FLUORIDE

Journal Article · Mon May 18 04:00:00 EDT 1964 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRev.134.A963· OSTI ID:4031133

Stoebe, T G; Ogurtani, T O; Huggins, R A

Nuclear-magnetic-resonance experiments were performed between 25 and 550 deg C in LiF powder doped with manganese. Motional narrowing of the /sup 7/Li resonance line occurred somewhat below 400 deg C. Resonance absorption lines were not observable in the temperature range 200-390 deg C, probably because an effective loss of paramagnetic relaxation centers increased the spin-lattice relaxation time. Electron spin-resonance experiments verified that the paramagnetic manganese does cluster upon heating above 200 deg C. A method of analysis which eliminates errors due to constant linewidth contributions in the analysis of motional narrowing data in terms of diffusion activation energies is developed. The activation energy for motion of Li ion vacancies in LiF is found to be 0.74 ev. (auth)

• Research Organization: Stanford Univ., Calif.
• NSA Number: NSA-18-019991
• OSTI ID: 4031133
• Journal Information: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 134; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ACTIVATION ENERGY
CATIONS
CHEMISTRY
DEFECTS
DIFFUSION
ELECTROLYTES
ELECTRONS
EQUATIONS
IMPURITIES
LATTICES
LITHIUM 7
LITHIUM COMPOUNDS
LITHIUM FLUORIDES
MAGNETISM
MANGANESE
MASERS
NUCLEAR MAGNETIC RESONANCE
OSCILLATIONS
OSCILLATORS
PARAMAGNETISM
PLASMA
POWDERS
RELAXATION
RESONANCE
SPIN
TRANSIENTS
VACANCIES