Title :
Spin-Torque Noise in CPP-GMR Heads with Current Screen Layer
Author :
Katada, H. ; Nakamoto, K. ; Hoshiya, H. ; Hoshino, K. ; Yoshida, N.
Author_Institution :
Hitachi Ltd., Odawara
Abstract :
Large noise in metallic current-perpendicular-to-plane-GMR heads is well known theoretically and experimentally to be induced by spin-torque when the sensing current is above the critical magnitude. Therefore the spin-torque noise might be an important issue for the CPP-GMR heads even with the current screen. In this study, we assessed the head noise of CPP-GMR heads with the current screen layer.
Keywords :
giant magnetoresistance; magnetic heads; magnetic noise; magnetisation; critical magnitude; current screen layer; current-perpendicular-to-plane-GMR heads; magnetization; spin-torque noise; Critical current; Electrical resistance measurement; Laboratories; Magnetic confinement; Magnetic heads; Magnetic noise; Magnetic switching; Magnetization; Noise figure; Tunneling;
Conference_Titel :
Magnetics Conference, 2006. INTERMAG 2006. IEEE International
Conference_Location :
San Diego, CA
Print_ISBN :
1-4244-1479-2
DOI :
10.1109/INTMAG.2006.375862
