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The magnetostriction of aluminum substituted nickel ferrites
iv
ABSTRACTS OF ARTICLES TO BE PUBLISHED IN THE J. PHYS. CHEM. SOLIDS Vol. 34, No. 8
exponentially falling rate of defect discharge at the electrodes. Received 25 July 1979 Revised 7 December 1979 15.
RELATION BETWEEN ORBITAL BINDING ENERGIES AND IONICITIES IN ALKALI AND ALKALINE EARTH FLUORIDES G.E. Murch and R.J. Thorn,Chemistry Division, Argonne National Laboratory 9700 South Cass Avenue, Argonne, IL. 69439, U.S.A.
The differences between the ionization 6), F(1s2), potentials and and the binding energies for M’~’~(np F(2p6) orbital electrons, adjusted for the electrostatic self-potentials, in alkali and alkaline earth fluorides have been correlated with ionicities derived from the indices of refraction through the optical dispersion theory of Phillips and van Vechten. The differences are linear in ionicities and are related to the covalent energies and the polarizabilities. The gap between the valence band and the Fermi level, determined with X-ray photoelectron spectroscopy, has been compared with the energy gap in the Phillips—van Vechten model. Whereas the former is a measure of the thermal activation energy for conduction, the latter is determined essentially by the valence electron density, the molar volume, and the polarizability. Received 13 November 1979
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THE MAGNETOSTRICTION OF ALUMINUM SUBSTITUTED NICKEL FERRITES
P.J.M. van der Straten, Th. Kwaaitaal and W.M.M.M. van den Eijnden, Department of Chemistry and Department of Electrical Engineering, Eindhoven Univeristy of Technology, Eindhoven, Netherlands. The room temperature magnetostriction constant X~of the system NiFe2_~A1~O4 is determined for 0
ELECTRIC AND MAGNETIC ANOMALIES AT THE CHARGE-DENSITY-WAVE TRANSITION IN NIOBIUM-SUBSTITUTED VANADIUM DISELENIDES Lynn F. Schneemeyer and M.J. Sienko, Baker Laboratory of Chemistry, Cornell University, Ithaca, NY 14853, U.S.A.
ABSTRACTS OF ARTICLES TO BE PUBLISHED IN THE J. PHYS. CHEM. SOLIDS Vol. 34, No. 8
exponentially falling rate of defect discharge at the electrodes. Received 25 July 1979 Revised 7 December 1979 15.
RELATION BETWEEN ORBITAL BINDING ENERGIES AND IONICITIES IN ALKALI AND ALKALINE EARTH FLUORIDES G.E. Murch and R.J. Thorn,Chemistry Division, Argonne National Laboratory 9700 South Cass Avenue, Argonne, IL. 69439, U.S.A.
The differences between the ionization 6), F(1s2), potentials and and the binding energies for M’~’~(np F(2p6) orbital electrons, adjusted for the electrostatic self-potentials, in alkali and alkaline earth fluorides have been correlated with ionicities derived from the indices of refraction through the optical dispersion theory of Phillips and van Vechten. The differences are linear in ionicities and are related to the covalent energies and the polarizabilities. The gap between the valence band and the Fermi level, determined with X-ray photoelectron spectroscopy, has been compared with the energy gap in the Phillips—van Vechten model. Whereas the former is a measure of the thermal activation energy for conduction, the latter is determined essentially by the valence electron density, the molar volume, and the polarizability. Received 13 November 1979
16.
THE MAGNETOSTRICTION OF ALUMINUM SUBSTITUTED NICKEL FERRITES
P.J.M. van der Straten, Th. Kwaaitaal and W.M.M.M. van den Eijnden, Department of Chemistry and Department of Electrical Engineering, Eindhoven Univeristy of Technology, Eindhoven, Netherlands. The room temperature magnetostriction constant X~of the system NiFe2_~A1~O4 is determined for 0
ELECTRIC AND MAGNETIC ANOMALIES AT THE CHARGE-DENSITY-WAVE TRANSITION IN NIOBIUM-SUBSTITUTED VANADIUM DISELENIDES Lynn F. Schneemeyer and M.J. Sienko, Baker Laboratory of Chemistry, Cornell University, Ithaca, NY 14853, U.S.A.