We fabricated magnetic rectangular block arrays of 130 and 260 Gblock/in2 by using focused ion beam lithography. The ratios R of the total block area to the array area are 0.73 and 0.64, respectively. The magnetic domain boundari...
T Kawagoe   Y Suzuki   S Yuasa   
Journal of Magnetism and Magnetic Materials 239(1-3) 126-128 2002年2月 [査読有り]
The tunneling magnetoresistance (TMR) in ferromagnet-vacuum-ferromagnet junction was studied by using an STM setup. After in situ cleaning of both of two ferromagnetic electrodes, up to 20% of TMR was observed. Such a signal was not observed for a...
T Kawagoe   E Tamura   Y Suzuki   K Koike   
Physical Review B 65(2) 024406/1-5. 2002年1月 [査読有り]
The influence of steps on the surface states of the magnetic Fe(001) surface was studied at room temperature by scanning tunneling microscopy (STM). We observed the distinct bias-dependent differential conductivity (dI/dV) contrasts at step edges ...