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LOW TEMPERATURE HEAT CAPACITY OF DEFORMED (LITHIUM FLUORIDE, POTASSIUM CHLORIDE) AND DOPED (SODIUM CHLORIDE-COPPER+) ALKALI HALIDE CRYSTALS.

[In Russian. / En russe.]

Author(s) : KVAVADZE K. A., NADAREISVILI M. M., TARHNISVILI L. A.

Type of article: Article

Summary

THE EFFECT OF INTERNAL STRESSES UPON LOW TEMPERATURE HEAT CAPACITY OF CRYSTALS HAS BEEN INVESTIGATED. INTERNAL STRESSES IN CRYSTALS WERE CREATED BY DEFORMATION OF PURE ALKALI HALIDES AND BY INTRODUCTION OF HIGH CONCENTRATION OF IMPURITY. INTERNAL STRESSES CAUSED BY 10% PLASTIC DEFORMATION OF PURE ALKALI HALIDE CRYSTALS DO NOT ESSENTIALLY INFLUENCE THE CRYSTAL VIBRATION SPECTRUM DUE TO INSUFFICIENTLY HIGH DENSITY OF DISLOCATIONS. IN CASE OF DOPED ALKALI HALIDE CRYSTALS WITH QUASI-LOCAL FREQUENCY IT HAS BEEN ESTABLISHED THAT THE CHARACTER OF IMPURITY DISTRIBUTION AND RESULTING INTERNAL DEFORMATIONS SIGNIFICANTLY INFLUENCE THE CRYSTAL THERMAL RESPONSES.

Details

  • Original title: [In Russian. / En russe.]
  • Record ID : 1988-0014
  • Languages: Russian
  • Source: Fiz. nizk. Temp. - vol. 13 - n. 3
  • Publication date: 1987
  • Document available for consultation in the library of the IIR headquarters only.

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