Title :
Thermal stability of a synthetic antiferromagnet free layer
Author :
Tezuka, N. ; Sakurada, K. ; Inomata, K.
Author_Institution :
Graduate Sch. of Eng., Tohoku Univ., Sendai, Japan
Abstract :
This work investigates the temperature dependence of coercivity and estimated thermal stability factor for synthetic antiferromagnet (SyAF) and single layer. The materials used are CoFe-Ru-CoFe for SyAF and CoFe for single film. Results show that the thermal stability factor is larger for SyAF than that for single layer which may be due to the increase of switching volume. The switching properties and thermal stability of smaller size individual elements for MTJs with SyAF and single free layers is also reported.
Keywords :
antiferromagnetic materials; cobalt alloys; coercive force; iron alloys; magnetic multilayers; magnetic switching; magnetic thin films; ruthenium; thermal stability; CoFe-Ru-CoFe; coercivity; single free layers; switching volume; synthetic antiferromagnet; temperature dependence; thermal stability factor; Anisotropic magnetoresistance; Atomic force microscopy; Coercive force; Magnetic anisotropy; Magnetic films; Magnetic switching; Perpendicular magnetic anisotropy; Temperature dependence; Thermal factors; Thermal stability;
Conference_Titel :
Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International
Print_ISBN :
0-7803-9009-1
DOI :
10.1109/INTMAG.2005.1464423
