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Neutron Diffraction Studies of the Low Temperature Transition in α’PdD

  • R. A. Bond
  • I. S. Anderson
  • B. S. Bowerman
  • C. J. Carlile
  • D. J. Picton
  • D. K. Ross
  • D. G. Witchell
  • J. K. Kjems
Part of the NATO Conference Series book series (NATOCS, volume 6)

Abstract

Neutron diffraction measurements of the equilibrium intensity of the (1 1/2 0) peak in the region of the low temperature transition for PdDx, x = 0.665 and x = 0.640 are presented. An accurate determination of the transition temperature and critical exponent are made, Tc = 42.5 ± 1.0 K and γ = 1.27 ± 0.06 for x = 0.665, Tc = 53.0 ± 0.5 K and γ = 1.31 ± 0.06 for x = 0.640. The relaxation of the peak intensity following a temperature change shows fast and slow time components in agreement with heat release measurements. The neutron slow time constants exhibit critical slowing down in the region of Tc.

Keywords

Critical Exponent Neutron Diffraction Study Equilibrium Intensity Arrhenius Relationship Diffuse Peak 
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Copyright information

© Plenum Press, New York 1983

Authors and Affiliations

  • R. A. Bond
    • 4
  • I. S. Anderson
    • 2
  • B. S. Bowerman
    • 1
  • C. J. Carlile
    • 3
  • D. J. Picton
    • 1
  • D. K. Ross
    • 1
  • D. G. Witchell
    • 1
  • J. K. Kjems
    • 5
  1. 1.Department of PhysicsUniversity of BirminghamBirminghamUK
  2. 2.Institut Laue-LangevinGrenoble, CedexFrance
  3. 3.Rutherford Appleton LaboratoryDidcot, OxonUK
  4. 4.Culham LaboratoryAbindgon, OxonUK
  5. 5.Risø National LaboratoryRoskildeDenmark

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