Kim, Wan-Seop

Influence of interfaces on magnetization reversal and perpendicular magnetic anisotropy of Fe/Tb multilayers

Titel in Deutsch Einfluss der Grenzflaechen auf Ummagnetisierungsverhalten und senkrechte magnetische Anisotropie von Fe/Tb-Vielfachschichten

Thesis

 Filetyp: PDF (.pdf)
Size: Kb

Schlüsselwörter in Englisch:
Fe/Tb multilayer, magneto-optic Kerr effect, SQUID, torque magnetometry, interface effect, magnetization reversal, cone state, perpendicular magnetic anisotropy, Fe modifications

Schlagwortnormdatei
Fe/Tb-Vielfachschichten, magnetooptischer Kerr-Effekt, SQUID, Torsionsmagnetometrie, Grenzflächeneffekt, Ummagnetisierungsverhalten, gekantete Spin-Struktur, senkrechte magnetische Anisotropie, Fe-Modifikationen
Sachgruppe der DNB
29 Physik, Astronomie
Physics and Astronomy Classification Scheme (PACS)
07.10.Pz, 68.35.Ct, 68.35.Rh, 68.55.-a, 75.30.Gw, 75.40.Cx, 75.60.-d, 75.70.-i,78.20.Ls, 85.25.Dq

Doctoral Dissertation accepted by: University of Duisburg , Department of Physics, 1998-11-25

Abstrakt in Englisch

In the present treatise magnetic and magneto-optic properties of Fe/Tb multilayers are investigated using Kerr spectroscopy, SQUID and Torque magnetometry in order to clarifiy the influence of interfaces on the magnetization reversal and the origin of the magnetic perpendicular anisotropy (PMA). The torque curves evidence different mechanisms to induce the PMA, viz., formation of alloy at rough Fe-on-Tb interfaces and antiferromagnetic coupling between Fe and Tb moments at smooth Tb-on-Fe interfaces. In addition, the observed magnetic cone structure is confirmed by model calculations based on the model due to Stoner and Wohlfarth. Different Fe modifications as isolated amorphous Fe, FeTb alloy and bulk amorphous Fe are identified on inspection of the polar Kerr curves. According to the Kerr spectra, the contribution of amorphous Fe in multilayers increases with increasing number of a-Fe/Tb bilayers.

Betreuer Kleemann, Wolfgang, Prof. Dr.
Gutachter Kleemann, Wolfgang, Prof. Dr.
Gutachter Wassermann, Eberhard F., Prof. Dr.
Upload: 1998-12-15
URL of Theses: http://duepublico.uni-duisburg-essen.de/servlets/DerivateServlet/Derivate-5122/inhalt.htm

University of Duisburg , Library
Lotharstr.65 , 47048 Duisburg, Germany