TY - JOUR
T1 - Direct observation of domains and magnetization switching processes in NiFe/alumina/Co trilayer junctions
AU - Yu, C. C.
AU - Petford-Long, A. K.
AU - Jakubovics, J. P.
N1 - Funding Information:
CCY would like to thank the Croucher Foundation Hong Kong for a scholarship, St Cross College, Oxford and the University of Oxford for a travel grant. AKPL is grateful to the Royal Society for support.
PY - 1999/6/1
Y1 - 1999/6/1
N2 - Transmission Lorentz microscopy was used to observe the effect of an applied field on the domain structure and magnetization process of NiFe/alumina/Co junctions. The alumina layer was prepared either by oxidizing a sputtered Al layer in air, or by direct sputtering of Al2O3. Two distinct magnetization reversal processes, where NiFe reverses first, followed by the magnetization reversal of Co, were observed with increasing applied field. The range of field values over which the magnetization of NiFe and Co are in an antiparallel configuration is approximately the same for both films. The alumina thickness, and waviness of the interfaces, can affect the magnetization process of the junctions.
AB - Transmission Lorentz microscopy was used to observe the effect of an applied field on the domain structure and magnetization process of NiFe/alumina/Co junctions. The alumina layer was prepared either by oxidizing a sputtered Al layer in air, or by direct sputtering of Al2O3. Two distinct magnetization reversal processes, where NiFe reverses first, followed by the magnetization reversal of Co, were observed with increasing applied field. The range of field values over which the magnetization of NiFe and Co are in an antiparallel configuration is approximately the same for both films. The alumina thickness, and waviness of the interfaces, can affect the magnetization process of the junctions.
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U2 - 10.1016/S0304-8853(98)01194-9
DO - 10.1016/S0304-8853(98)01194-9
M3 - Conference article
AN - SCOPUS:0032667234
SN - 0304-8853
VL - 198
SP - 503
EP - 505
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
T2 - Proceedings of the 1998 3rd International Symposium on Metallic Multilayers (MML-98)
Y2 - 14 June 1998 through 19 June 1998
ER -