Abstract
Modern magnetic devices (GMR read heads, magnetic sensors, hard disks andspintronics devices) relies on storing or manipulating magneticinformation in smaller length scales (nm’s) at faster time scales(nano-seconds to femto- seconds). It is very important to know themagnetic structure in order to understand the magnetic device. To advancenanoscience and nanotechnology, we have to be able to understand howmaterials behave at the nanoscale. Advancement of nano-science allows usto prepare structure in nanometer scale both by self-assembly and electronbeam lithography. X-ray magnetic characterization provide us informationon nanoscale with element specificity, chemical sensitivity, sensitivityto charge, orbital and spin ordering, high spatial resolution,polarization capability and faster time scales (dynamics using coherence,for coherent diffraction imaging and XPCS) and pump-probe techniques. Inthis talk I will present an overview of thin film magnetism and ultrafastmagnetic dynamics of magnetic multilayers exhibiting ordered stripes dueto perpendicular magnetic anisotropy (PMA). I will present a rather newand demanding technique to take image without a lens. One can see magneticstructure at the nanoscale level without using any lenses. One immediateapplication of this lens-less X-ray microscope is the development ofsmaller data storage devices for computers that can hold more memory.I will address the evolution of magnetic systems as a function of magnetic
