Digitale Medien
[S.l.]
:
American Institute of Physics (AIP)
Journal of Applied Physics
64 (1988), S. 5446-5448
ISSN:
1089-7550
Quelle:
AIP Digital Archive
Thema:
Physik
Notizen:
Magnetization has been measured as a function of in-plane applied field and temperature by measuring the spin polarization of low-energy electrons (LEESPA) excited from the surface by an unpolarized electron beam (Ep=2 keV). These extremely surface sensitive data (probing 〈25 A(ring)), taken on surfaces characterized by Auger electron spectroscopy, are compared with results obtained by magneto-optic Kerr effect (MOKE probing 〈250 A(ring)) and bulk magnetometry. The LEESPA M-H loops show considerably lower remanence than MOKE indicating appreciable surface anisotropy. The LEESPA polarization approaches zero at approximately TC =170 °C for both the Co and Fe base alloys with less curvature than bulk magnetization does. The bulk TC's are 20 °C higher than those measured by LEESPA.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1063/1.342342
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