Title :
Magnetization reversal by spin polarized current in nano-pillars with a synthetic antiferromagnet free layer
Author :
Tezuka, N. ; Yonezawa, K. ; Ochiai, Toshihiko ; Jiang, Y. ; Sugimoto, S. ; Inomata, K.
Author_Institution :
Dept. of Mater. Sci., Tohoku Univ., Sendai, Japan
Abstract :
Spin transfer magnetization switching is studied in nano-pillars with a synthetic antiferromagnetic free layer (SyAF), CoFe/Ru/CoFe, under an external magnetic field. The resistance change for the conventional type nano-pillar (CoFe) and SyAF type sample is almost the same, demonstrating full reversal of the magnetization. On the other hand, the critical current as a function of magnetic field for the SyAF type is found to behave in the opposite way with that of the conventional type.
Keywords :
antiferromagnetic materials; cobalt alloys; critical currents; electrical resistivity; ferromagnetic materials; iron alloys; magnetic multilayers; magnetic switching; magnetisation reversal; ruthenium; spin polarised transport; CoFe-Ru; conventional type nano-pillar; critical current; magnetization reversal; nanopillars; resistance change; spin polarized current; spin transfer magnetization switching; synthetic antiferromagnet free layer; Antiferromagnetic materials; Critical current; Critical current density; Magnetic fields; Magnetic switching; Magnetization reversal; Materials science and technology; Polarization; Sociotechnical systems; Spin valves;
Conference_Titel :
Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International
Print_ISBN :
0-7803-9009-1
DOI :
10.1109/INTMAG.2005.1463503
