Title :
High frequency measurements of spin valve recording heads
Author :
Russek, S. ; Kabos, P. ; Cross, R.W.
Author_Institution :
Nat. Inst. of Stand. & Technol., Boulder, CO, USA
fDate :
March 30 2003-April 3 2003
Abstract :
The high frequency response of a spin valve read head was characterized using noise spectroscopy and direct excitation from a co-planar waveguide. The magnetic noise spectrum which is proportional to the imaginary part of the device susceptibility, was measured using a low noise preamplifier and a spectrum analyzer. The response of the read head to electric and magnetic fields excitations was measured by connecting the CPW drive to port 1 of a 40 GHz network analyzer and the read head output to port2.
Keywords :
magnetic heads; magnetic noise; magnetic recording; magnetic susceptibility; spin valves; 40 GHz; CPW; coplanar waveguide; electric field excitations; high frequency measurements; magnetic field excitations; magnetic noise spectra; magnetic susceptibility; spin valve read recording heads; Frequency measurement; Frequency response; Magnetic field measurement; Magnetic heads; Magnetic noise; Magnetic recording; Magnetic susceptibility; Noise measurement; Spectroscopy; Spin valves;
Conference_Titel :
Magnetics Conference, 2003. INTERMAG 2003. IEEE International
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-7647-1
DOI :
10.1109/INTMAG.2003.1230441
