By Robert E. Camley, Zbigniew Celinski, Robert L. Stamps
In the earlier 30 years, magnetic examine has been ruled by way of the query of the way surfaces and interfaces impression the magnetic and delivery houses of nanostructures, skinny movies and multilayers. The learn has been quite vital within the magnetic recording the place the large magnetoresistance impact ended in a brand new new release of garage units together with hand held stories corresponding to these present in the ipod. extra lately, move of spin angular momentum throughout interfaces has opened a brand new box for prime frequency functions.
This publication supplies a accomplished view of study on the vanguard of those fields. The frontier is increasing via dynamic trade among concept and test. Contributions were selected to mirror this, giving the reader a unified review of the topic.
- Addresses either thought and test which are important for gaining a vital realizing of themes on the interface among magnetism and fabrics science
- Chapters written by way of specialists offer nice insights into advanced fabric
- Discusses fundamental background fabric and state of the art purposes, serving as an vital advisor for college kids and execs in any respect degrees of expertise
- Stresses interdisciplinary facets of the sphere, together with physics, chemistry, nanocharacterization, and fabrics science
- Combines simple fabrics with functions, hence widening the scope of the publication and its readership
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Additional resources for Magnetism of Surfaces, Interfaces, and Nanoscale Materials
1 s1 Remanence H Negative saturation (e) (f) Hs2 (b) Vortex core nucleation (g) 0 (h) –Ms(Fe) Hs3 −1 −1 0 Field (kOe) 1 Vortex core annihilation FIGURE 27 (a) SEM image of bicomponent disks array and (b) the corresponding MOKE loop of the array of bicomponent disks. (cÀh) The simulated spin configuration during the magnetization reversal of bicomponent disk. Taken from Ref. . 5 CONCLUSION In this chapter, we have presented some of the most common techniques for the growth and characterization of magnetic thin films and nanostructures.
Thickness modification is often associated with a large alteration in magnetic properties of magnetic nanostructures due to the changing energy landscape. Notably, a stable vortex magnetization state in magnetic nanodisks is favored in a thicker film due to lower exchange energy associated with its vortex core. The thickness modulation will dictate a selective modification of magnetization behaviors in different parts of the magnetic nanostructure. Thickness-modulated nanostructures can be made using complex multilevel lithography alignment and pattern transfer processes.
It consists of a regular sequence of short pulses each being some 10 ps wide . This “stroboscopic” illumination has been very extensively employed to investigate the magnetization dynamics in the nano- and picosecond timescales. Second, the light from high-brilliance synchrotron sources has also a considerable degree of coherence which enabled pioneering holography experiments. In the free electron laser (FEL) sources which are currently being developed, the degree of coherence will be even higher and the time structure involves light pulses in the femtosecond regime [13,14].