Title :
Focused Magneto-optical Kerr Effect measurement of single pseudo spin-valve ring elements
Author :
Hayward, T.J. ; Van Belle, F. ; Bland, J. ; Castano, F.J. ; Jung, W. ; Morecroft, D. ; Ross, C.A.
Author_Institution :
Cambridge Univ., Cambridge
Abstract :
This paper, presents a study of a range of micrometer-scale PSV (pseudo spin-valve) ring elements using focused magneto-optic Kerr effect (FMOKE) magnetometery. The rings were patterned using e-beam lithography and lift off processing and have a layer configuration of 8 nm Co/6.5 nm Cu/6 nm permalloy. The laser spot of the FMOKE magnetometer can be focused to a spot size of approximately 4 mum (full width half maximum) allowing the measurement of individual ring elements. This approach allows the resolution of fine details in hysteresis loops which would be lost in the averaging of more traditional, array based, measurement techniques.
Keywords :
Kerr magneto-optical effect; Permalloy; cobalt; copper; magnetic hysteresis; magnetic multilayers; spin valves; Co; Co-Cu-FeNi - Interface; Cu; FMOKE magnetometery; NiFe; e-beam lithography; focused magneto-optical Kerr effect; hysteresis loops; lift off processing; permalloy; pseudo spin-valve ring elements; Cobalt; Kerr effect; Magnetic devices; Magnetic field measurement; Magnetic hysteresis; Magnetic separation; Magnetometers; Magnetooptic effects; Magnetostatics; Materials science and technology;
Conference_Titel :
Magnetics Conference, 2006. INTERMAG 2006. IEEE International
Conference_Location :
San Diego, CA
Print_ISBN :
1-4244-1479-2
DOI :
10.1109/INTMAG.2006.374970
