ELECTRON SPIN RESONANCE SPECTRA OF N2H4+ AND PF2

1966 ◽  
Vol 44 (16) ◽  
pp. 1957-1959 ◽  
Author(s):  
J. K. S. Wan ◽  
J. R. Morton ◽  
H. J. Bernstein
Keyword(s):  
Electron Spin Resonance ◽  
Low Temperature ◽  
Electron Spin ◽  
Spin Resonance ◽  
Temperature Irradiation

The radicals N2H4+ and PF2 have been detected by electron spin resonance in -γ-irradiated NH4PF6. The radical N2H4+ was shown to be formed from NH3+ radicals detectable after low-temperature irradiation.

Paramagnetic resonance and optical absorption of trapped holes and electrons in irradiated KCI: Ag

1963 ◽  
Vol 271 (1345) ◽  
pp. 243-267 ◽  
Keyword(s):  
Electron Spin Resonance ◽  
Low Temperature ◽  
Optical Absorption ◽  
Electron Spin ◽  
Optical Absorption Spectra ◽  
Paramagnetic Resonance ◽  
Spin Resonance ◽  
Impurity Ions ◽  
Temperature Irradiation ◽  
Positive Holes

The electron spin resonance and optical absorption spectra of crystals of KCl containing silver impurity ions were examined after the crystals had been X -irradiated at 77 °K. It is shown that the silver impurity ions act as traps for both electrons and positive holes. A description is given of the annealing behaviour of the crystals after low-temperature irradiation.

Applications of ESR to Carbonaceous Materials

1982 ◽  
Vol 36 (1) ◽  
pp. 52-57 ◽  
Author(s):  
L. S. Singer ◽  
I. C. Lewis
Keyword(s):  
Free Radicals ◽  
Electron Spin Resonance ◽  
Low Temperature ◽  
Electron Spin ◽  
Paramagnetic Species ◽  
Carbonaceous Materials ◽  
Conduction Electrons ◽  
Spin Resonance ◽  
Higher Temperature ◽  
Low Temperature Pyrolysis

The applications of electron spin resonance (ESR) to carbonaceous materials are reviewed. The stable paramagnetic species observed in the products of low-temperature pyrolysis are odd-alternate neutral free radicals, whereas the unpaired spins of higher temperature carbons and graphites are primarily conduction electrons. The variety of ESR properties and phenomena requires special attention to techniques of measurement and interpretations of results. The relevance to the carbonization process of the free radicals observed by ESR is also discussed.

Low‐temperature electron spin resonance investigations of silicon paramagnetic defects in silicon nitride

1991 ◽  
Vol 58 (21) ◽  
pp. 2417-2419 ◽  
Author(s):  
W. L. Warren ◽  
F. C. Rong ◽  
E. H. Poindexter ◽  
J. Kanicki ◽  
G. J. Gerardi
Keyword(s):  
Electron Spin Resonance ◽  
Silicon Nitride ◽  
Low Temperature ◽  
Electron Spin ◽  
Spin Resonance ◽  
Temperature Electron
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