Wh. Rippard et Ra. Buhrman, Ballistic electron magnetic microscopy: Imaging magnetic domains with nanometer resolution, APPL PHYS L, 75(7), 1999, pp. 1001-1003
A variation of ballistic electron emission microscopy has been developed to
image magnetic structure in thin-film multilayers with nanometer resolutio
n. In studies of nominally uncoupled Co/Cu/Co trilayer films, magnetic doma
ins and domain-wall motion are readily observable with this technique. In t
he Co/Cu/Co trilayer system magnetic domains are found to occur on an simil
ar to 500-nm-length scale and less, while smaller-scale fluctuations in the
ballistic electron transport properties of the system are found on an simi
lar to 10 nm length scale. (C) 1999 American Institute of Physics. [S0003-6
951(99)03933-9].