Structure and magnetic properties of ferromagnetic layers in multilayered Co/Pd films

Тип публикации: статья из журнала

Год издания: 2003

Аннотация: X-ray diffraction analysis, nuclear magnetic resonance, and low-temperature magnetic measurements were used to study the structure and magnetic parameters of multilayered Co/Pd films. The ferromagnetic Co layers in the multilayered films were found to have a texture. Their X-ray diffraction patterns exhibit a principal (200) reflection of the fcc structure, whereas the X-ray diffraction patterns of Pd layers are characterized by the (111) reflection of the fcc structure. The saturation magnetization M(t(Co)) of a Co layer decreases by 25% as its thickness decreases to 6 Angstrom. This is related to the formation of a layer of a CoPd alloy 8 Angstrom thick at the interface. The exchange interaction parameter A also decreases with decreasing thickness of the Co layers. However, the behavior of the A(t(Co)) curve cannot be explained only by the formation of a CoPd alloy at the interface. The nuclear magnetic resonance spectra of the multilayered films may be resolved into two components; one of them is determined by Co atoms with the fcc nearest-neighbor surroundings, whereas the other is due to Co atoms with the hcp nearest-neighbor surroundings. The type of the NMR spectra and A(t(Co)) behavior were found to be due to the highly defect structure of ferromagnetic Co layers, which are formed as close-packed fcc structures with numerous stacking faults (layers of the hcp structure).

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Издание

Журнал: PHYSICS OF METALS AND METALLOGRAPHY

Выпуск журнала: Vol. 95, Is. 3

Номера страниц: 242-247

ISSN журнала: 0031918X

Место издания: BIRMINGHAM

Издатель: INTERPERIODICA

Авторы

  • Iskhakov R.S. (Kirenskii Institute of Physics,Siberian Division,Russian Academy of Sciences)
  • Komogortsev S.V. (Kirenskii Institute of Physics,Siberian Division,Russian Academy of Sciences)
  • Stolyar S.V. (Krasnoyarsk State University)
  • Chekanova L.A. (Kirenskii Institute of Physics,Siberian Division,Russian Academy of Sciences)
  • Mal'tsev V.K. (Kirenskii Institute of Physics,Siberian Division,Russian Academy of Sciences)
  • Balaev A.D. (Kirenskii Institute of Physics,Siberian Division,Russian Academy of Sciences)
  • Shepeta N.A. (Siberian State Air Space University)
  • Bondarenko G.N. (Inst. of Chem./Chemical Metallurgy,Siberian Division,Russian Academy of Sciences)

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