Far-Infrared Absorption in Solid Alpha Oxygen
T. G. BlockerTexas Instruments Incorporated, Dallas, Texas 75222M. A. KinchTexas Instruments Incorporated, Dallas, Texas 75222F. G. WestTexas Instruments Incorporated, Dallas, Texas 75222
1969en
ABI
Abstract
The far-infrared absorption spectrum of crystalline alpha oxygen ($\ensuremath{\alpha}\ensuremath{-}{\mathrm{O}}_{2}$) has been measured in annealed samples up to 20 mm thick. The prominent feature of the spectrum is a temperature-dependent absorption near 27 ${\mathrm{cm}}^{\ensuremath{-}1}$ which appears to be an anti-ferromagnetic resonance mode, the first such collective excitation to be observed in a molecular solid.
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