Ultrasonic Properties of Pure and Ag-Doped Amorphous Chalcogenides (As_2S_3, As_2Se_3)

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概要

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• The lattice (elastic and relaxation) properties of the amorphous chalcogenides,mainly on pure and Ag-doped As.S3, have been studied by measuring ultrasonicvelocities and attenuations. The o bserved drastic increase (5 -10 %) of the velocitywith a small amount (1 at.%) of doped Ag in As.S3 has been attributed to itsanomalous behaviors of the density, the anharmonicity and the bulk modulusdue to the doping. The experimental temperature dependences of shear waveattenuation x,(T) and of high-frequency electrical conductix'ity o(T) in As.S. areboth well represented by exp ( -E./kt) with approximately the same activationenergy Ej.?O.1 eV. The mechanism of the phonon-assisted hopping of As -Sdipoles (activated by thermal phonons) has been shown to explain the identicaltemperature dependence for a.(7') and o(T). Thus, these are the two manifestations,the mechanical relaxation (a) and the dielectric relaxation (a), of the same origin,i.e., due to the hopping of ions, perhaps mainly S ions.

• 社団法人日本物理学会の論文
• 1978-04-15

著者

• KASHIDA Shoji

  Department of Physics,Faculry of Sciense,Niigata University

• KAGA Hiroyuki

  Department of Physics,Faculry of Sciense,Niigata University

• Kaga Hiroyuki

  Department Of Physics And Materials Research Laboratory University Of Illinois :department Of Physic

• Kashida Shoji

  Department Of Environmental Science Niigata University

• UMEHARA Sotomitsu

  Department of Physics,Niigata University

• Umehara Sotomitsu

  Department Of Physics Niigata University:musashi Works Hitachi Ltd.

• KAGA Hiroyuki

  Department of Physics,Niigata University:Institute for Theoretical Physics, University of California

• Kashida Shoji

  Department of Physics,Niigata University

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• Spin-Dependent Final-State Interactions in Core Photoelectron Spectra of Metals with Incomplete Shell.II : Numerical Computations
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• The Crystal Structure of (CH_3)_3NHCdCl_3 in the Orthorhombic(2×√)Phase
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• Inelastic Neutron Scattering Study of KHCO_3
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