dc.creator Wheeler, Robert G. en_US dc.creator Dorain, Paul B. en_US dc.date.accessioned 2006-06-15T16:24:05Z dc.date.available 2006-06-15T16:24:05Z dc.date.issued 1965 en_US dc.identifier 1965-AC-5 en_US dc.identifier.uri http://hdl.handle.net/1811/14728 dc.description Work supported in part by the U. S. Air Force Office of Scientific Research. Paul B. Dorain: on leave from Brandeis University. en_US dc.description Author Institution: Department of Physics, Yale University, New Haven en_US dc.description.abstract Using interferometric far infrared spectroscopic techniques, the zero magnetic field anti-ferromagnetic resonance in seven compounds of the face centered type $(M_{2}ReX_{6})$ containing $ReCl{^=}_6$ and $ReBr{^=}_6$ have been observed at $1.5^{\circ}K$. Re-Re pair spectra in typical diamagnetic host crystals such as $K_{2}PtCl_{6}$ have been observed allowing a determination of the isotropic and anisotropic exchange parameters. The antiferromagnetic resonance has been interpreted in terms of a magnetic type 3 ordering. Since little or no lattice distortion occurs in these compounds upon antiferro-magnetic ordering, the compounds of this system offer an example of exchange parameter determination as a function of lattice parameter as well as cation exchange effects. Examples of phonon-spin wave coupling have been observed in the far infrared spectra. Diamagnetic isomorphic crystals were used to locate vibronic and lattice modes. en_US dc.format.extent 245816 bytes dc.format.mimetype image/jpeg dc.language.iso English en_US dc.publisher Ohio State University en_US dc.title ANTIFERROMAGNETIC RESONANCE IN CONCENTRATED CUBIC CRYSTALS CONTAINING $ReCl{^=}_6$ AND $ReBr{^=}_6$. en_US dc.type article en_US
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