Amorphous alloys as secondary standards for electron spin polarimetry

The surface magnetism of as-cast and field annealed amorphous in ribbon form has been studied by spin-polarized secondary electron spectroscopy, by recording energy-resolved spin asymmetry hysteresis loops and by scanning electron microscopy with polarization analysis. Large lateral variations in surface magnetization have been detected, indicating that , in particular, and ferromagnetic melt-spun ribbons, in general, are not suitable as standard sources of polarized electrons. Deposition of an iron film onto the did not result in a more uniform surface but rather served to emphasize the substrate magnetic structure. Thus utilization of ferromagnetic melt-spun amorphous alloys as substrates for the growth of thin magnetic films should be undertaken with caution.

[1]  F. Sirotti,et al.  Time-resolved surface magnetometry in the nanosecond scale using synchrotron radiation , 1998 .

[2]  Yongbing Xu,et al.  Surface magnetic microstructure of melt-spun magnetic ribbons , 1997 .

[3]  Yongbing Xu,et al.  Spin-polarized photoemission of , 1996 .

[4]  C. Shearwood,et al.  Amorphous melt spun ribbons and sputtered thin films — investigation of the magnetic domain structures by TEM , 1995 .

[5]  Klebanoff,et al.  Spin-resolved and high-energy-resolution XPS studies of cobalt metal and a cobalt magnetic glass. , 1994, Physical review. B, Condensed matter.

[6]  R. Mccurrie,et al.  Ferromagnetic materials : structure and properties , 1994 .

[7]  L. Klebanoff,et al.  Electron spin detector for spin‐resolved x‐ray photoelectron spectroscopy , 1993 .

[8]  Hideo Matsuyama,et al.  Fine magnetic domain structure of stressed amorphous metal , 1993 .

[9]  H. Kronmüller,et al.  Stress-induced anisotropy and domain patterns of amorphous Co67Fe4Mo1Si12B16 , 1992 .

[10]  G. Herzer,et al.  Nanocrystalline soft magnetic materials , 1992 .

[11]  J. Kirschner,et al.  Spin polarization of secondary electrons from Fe(110) excited by unpolarized primary electrons , 1992 .

[12]  P. Squire,et al.  Domain studies of field-annealed amorphous ribbon , 1992 .

[13]  R. Browning,et al.  Iron overlayer polarization enhancement technique for spin‐polarized electron microscopy , 1991 .

[14]  Hopster.  Spin polarization of secondary electrons from amorphous 3d metallic ferromagnets. , 1987, Physical review. B, Condensed matter.

[15]  N. Morito,et al.  Temperature dependence of creep‐induced and field‐induced anisotropy in a zero magnetostriction amorphous alloy , 1984 .

[16]  J. Livingston,et al.  Domain studies on amorphous ribbons with transverse or oblique magnetic anisotropy , 1982 .