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To better understand the response of domain walls to current-induced spin transfer torques, we have directly imaged the internal magnetic structure of domain walls in current-carrying ferromagnetic nanostripes. Domain wall images were acquired both while a constant current was flowing through the wire, and after applying current pulses. Domain walls ranging from vortex walls in wide (1 µm) wires to transverse walls in narrow (100 nm) wires were quantitatively analyzed using scanning electron microscopy with polarization analysis. The domain wall motion is characterized by strong interactions with random pinning sites along the wire. The walls either jump with the electron flow between pinning sites, or the pinned walls are distorted by the current. The domain wall propagation is also associated with transverse motion of the vortex core. [ABSTRACT FROM AUTHOR]

Provides information on a study which observed magnetization profiles at surfaces with scanning electron microscopy and polarization analysis. Calculation of micromagnetic equation using energy minimization; Dependence of the domain wall magnetization on sample thickness; Contrast between the Bitter technique and magnetic force microscopy.

Presents a study that observed the magnetism at the surface of a chromium film grown epitaxially on an iron whisker as a function of chromium thickness. Use of scanning electron microscopy with polarization analysis; Use of a wedge-shaped film of linearly increasing thickness; Surface magnetic moment.

Investigates the electronic structure and surface magnetism of nickel and the changes that are induced by chemisorption, using spin-polarized inverse photoelectron spectroscopy. Theories used to make predictions of changes in the spectrum of d holes to be expected on chemisorption of oxygen; Relationship between magnetism and chemisorption; Role of inverse photoemission in the investigation of unoccupied electron states.

Presents a study that investigated interlayer exchange coupling in Fe/Au/Fe(100) sandwich structures. Experiment conducted; Results; Discussion.

Presents scanning electron microscopy with polarization analysis observations of magnetic exchange coupling in the Fe/Ag/Fe, Fe/Au/Fe and Fe/Cr/Fe systems. Experiment conducted; Discussion; Conclusion.

Presents an abstract of the article 'Magnetic microstructure of amorphous alloys studied using scanning electron microscopy with polarization analysis,' by J. Unguris, G.G. Hembree, R.J. Celotta, D.T. Pierce and C. Aroca.

Presents an abstract of the study 'Scanning Electron Microscopy With Spin Polarized Electrons,' by J. Unguris, G.G. Hembree, R.J. Celotta and D.T. Pierce.