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Träfflista för sökning "WFRF:(Zafar M) srt2:(2005-2009)"

Sökning: WFRF:(Zafar M) > (2005-2009)

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1.
  • Owens, Frank J., et al. (författare)
  • Unusual room temperature ferromagnetism in bulk sintered GaP doped with copper
  • 2007
  • Ingår i: IEEE transactions on magnetics. - 0018-9464 .- 1941-0069. ; 43:6, s. 3043-3045
  • Tidskriftsartikel (refereegranskat)abstract
    • Robust room temperature ferromagnetism is obtained in single phase Gallium Phosphide doped with Cu2+ prepared by simple solid state reaction route. The saturation magnetization at 300 K is 1.5 x 10(-2) emu/g and the coercivity was found to be 125 Oe. A strong ferromagnetic resonance signal confirms the long range magnetic order which persists to temperatures as high as 739 K. X-ray absorption spectroscopy (XAS) indicate that Cu is in a +2 state. Ab initio calculations also show that the ferromagnetic ordering is energetically favorable in Cu doped GaP. When the spin-orbit coupling is included we get an enhanced total magnetic moment of 0.31 mu(B) with a local moment on Cu 0.082 and on P 0.204 mu(B). per atom.
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3.
  • Yasin, Zafar, et al. (författare)
  • Pion-induced fission - A review
  • 2009
  • Ingår i: Radiation Measurements. - : Elsevier BV. - 1350-4487 .- 1879-0925. ; 44:9-10, s. 846-852
  • Konferensbidrag (refereegranskat)abstract
    • Real or virtual pions are important ingredients of nuclear reactions at intermediate energies, and their couplings to major nuclear de-excitation modes can determine the final reaction products starting from several beam species. One of these modes is the important fission decay channel for heavy nuclei, induced with real pion beams over a wide range of energies and nuclei, largely using SSNTD. The data have been compared with the predictions of several standard INC reaction models. This review of the data and calculations will provide a status report for this class of reactions. Comparison to fission induced by protons and photons is included to set a context for that induced by real pion beams. (C) 2009 Elsevier Ltd. All rights reserved.
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