Browsing Geldart, Wally by Subject "Magnetic transitions"

Now showing items 1-4 of 4

  • Critical behavior of two-dimensional magnetic systems with dipole-dipole interactions 

    De'Bell, K., and D. J. W. Geldart. 1989. "Critical behavior of two-dimensional magnetic systems with dipole-dipole interactions." Physical Review B (Condensed Matter) 39(1): 743-4. Copyright © 1989 American Physical Society.
    The critical exponents of two-dimensional dipolar magnetic systems with isotropic in-plane ordering may be obtained from the expansion which determines the exponents of isotropic three-dimensional dipolar systems. However, ...

  • Effect of finite mean free path on spin-flip scattering rates near the critical point of magnetically ordered systems 

    Geldart, D. J. W., and K. De'Bell. 1985. "Effect of finite mean free path on spin-flip scattering rates near the critical point of magnetically ordered systems." Physical Review B (Condensed Matter) 32(5): 3285-8. Copyright © 1985 American Physical Society.
    The finite electron mean free path of conduction electrons is found to play an important role in determining spin-flip scattering rates, 1/sf, near a magnetic critical point. Small-momentum-transfer processes are suppressed ...

  • Theory of impurity-concentration dependence of freezing temperatures of metallic spin glasses 

    Shegelski, M. R. A., and D. J. W. Geldart. 1992. "Theory of impurity-concentration dependence of freezing temperatures of metallic spin glasses." Physical Review B (Condensed Matter) 46(5): 2853-63. Copyright © 1992 American Physical Society.
    The authors present a theory of the freezing temperature Tg of metallic spin glasses. Length scales associated with intrinsic sd scattering and finite temperature play essential roles. They describe an approach in which ...

  • Universal correction to scaling amplitude ratios for inhomogeneous ferromagnets with continuous symmetry 

    Kyriakidis, J., and D. J. W. Geldart. 1996. "Universal correction to scaling amplitude ratios for inhomogeneous ferromagnets with continuous symmetry." Physical Review B (Condensed Matter) 53(17): 11572-81. Copyright © 1996 American Physical Society.
    Critical exponents and amplitude ratios for corrections to the scaling limit are calculated for a randomly diluted, weakly inhomogeneous O(m) Heisenberg model in an expansion in =4-d. Calculations for the exponents and ...