Tailoring magnetic nanostructures with neon in the ion microscope

Tailoring exchange bias with magnetic nanostructures

Kai Liu, Shenda M. Baker, Mark Tuominen, Thomas P. Russell, and Ivan K. Schuller Department of Physics, University of California-San Diego, La Jolla, California 92093-0319 Department of Chemistry, Harvey Mudd College, Claremont, California 91711 Department of Physics, University of Massachusetts, Amherst, Massachusetts 01003 Polymer Science and Engineering, University of Massachusetts, Amherst,...

Role of Magnetic Resonance and Wave Interference in Tailoring the Radiative Properties of Micro/nanostructures

Neon Ion Beam Lithography (NIBL).

Existing techniques for electron- and ion-beam lithography, routinely employed for nanoscale device fabrication and mask/mold prototyping, do not simultaneously achieve efficient (low fluence) exposure and high resolution. We report lithography using neon ions with fluence <1 ion/nm(2), ∼1000× more efficient than using 30 keV electrons, and resolution down to 7 nm half-pitch. This combination o...

Tailoring nanostructures using copolymer nanoimprint lithography.

The generation of defect-free polymer nanostructures by nanoimprinting methods is described. Long-range nanorheology and shorter-range surface energy effects can be efficiently combined to provide alignment of copolymer lamellae over several micrometers. As an example, a perpendicular organization with respect to circular tracks is shown, demonstrating the possibility of writing ordered radial ...

Tailoring magnetic anisotropy gradients by ion bombardment for domain wall positioning in magnetic multilayers with perpendicular anisotropy

UNLABELLED Graded anisotropy magnetic materials possess a coercive field changing laterally with position. A simple fabrication procedure to produce such an anisotropy gradient in a polycrystalline Au/Co layer system without lateral thickness variation and with perpendicular magnetic anisotropy, prototypical for a large variety of thin film systems, is shown. The procedure uses light-ion bombar...