Unusual room temperature ferromagnetism in bulk sintered GaP doped with copper

Frank J. Owens, Amita Gupta, K. V. Rao, Zafar Iqbal, J. M.Osorio Guillen, R. Ahuja, J. H. Guo

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6 Scopus citations


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 × 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 μB with a local moment on Cu 0.082 and on P 0.204 μB per atom.

Original languageEnglish (US)
Pages (from-to)3043-3045
Number of pages3
JournalIEEE Transactions on Magnetics
Issue number6
StatePublished - Jun 2007

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


  • GaP:Cu
  • Magnetic resonance
  • Magnetic semiconductors
  • Materials science and technology
  • Spintronics


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