Accession Number : AD0857496

Title :   Determination of the Debye Temperature of Zinc Selenide Using Neutron Diffraction.

Descriptive Note : Master's thesis,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING

Personal Author(s) : DE Jonckheere, Eric T., Jr

Report Date : JUN 1969

Pagination or Media Count : 75

Abstract : The Debye temperature of ZnSe was calculated using neutron diffraction. Using neutrons of 1.89A wavelength, the diffraction data of the (111), (220), (311), (400), (313), and (224) Bragg peaks of ZnSe powder were obtained. Neglecting thermal diffuse scattering, the integrated intensities of these peaks were converted to an absolute scale using Ni powder as a standard. With the assumption that the zinc and selenium atoms vibrate with the same reduced mass, the Debye-Waller factor and hence the Debye temperature was computed. A value of 260 plus or minus 25 degrees K was obtained. The effect of using a mean mass in calculation of the Debye temperature is also discussed. (Author)

Descriptors :   (*ZINC COMPOUNDS, SPECIFIC HEAT), NEUTRON DIFFRACTION, CRYSTAL STRUCTURE, SEMICONDUCTORS, SELENIDES, PHONONS, THESES.

Subject Categories : Solid State Physics
      Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE