Zobrazeno 1 - 10
of 59
pro vyhledávání: '"J. Wittborn"'
Publikováno v:
Advanced Materials. 19:2209-2212
Nanostructures are at the heart of ever-shrinking electronic and photonic devices. The engineering of nanocomposite materials, building blocks, and conduction properties necessitate advanced microscopy tools to assess critical dimensional, compositio
Publikováno v:
Journal of Applied Physics. 92:2779-2782
Nanoscale ferromagnetic entities are directly patterned in superparamagnetic Fe–Cr layers by interfering laser beams. To characterize the formed entities, in addition to the conventional methods, we used a technique for magnetic imaging based on th
Publikováno v:
Nanostructured Materials. 12:1149-1152
The magnetization reversal of chains of 40–50 nanometer, magnetic particles has been studied using Magnetic Force Microscopy (MFM) in an applied field. The field was stepwise increased and decreased in order to make hysteresis loops for the chains.
Slow relaxation of the polarization in pulsed laser ablated highly oriented ferroelectric thin films
Publikováno v:
Le Journal de Physique IV. :Pr9-89
The relaxation of the polarization (as determined by the pyroelectric effect) of high quality laser ablated films of PbZr 0.52 Ti 0.48 O 3 has been measured after saturation with an applied electric field. The decay is observed to be quasilogrithmic
Publikováno v:
Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. 16:2381-2384
The two-dimensional spatial distribution of the thickness of pulsed laser deposited lead zirconate titanate films has been studied experimentally as a function of the laser characteristics and ambient oxygen pressure. The profiles obtained in vacuum
Publikováno v:
Applied Surface Science. :831-835
We present a systematic experimental study of the thickness profiles and the growth rates of ferroelectric lead zirconium titanate (PZT) thin films, formed by pulsed laser deposition, both in vacuum and in an oxygen ambient. The results are explained
Publikováno v:
Journal of Magnetism and Magnetic Materials. :29-31
We present an approach to magnetic imaging of single-domain magnetic entities in Fe(Co)-based composite media. The approach is based on atomic force microscopy (AFM) with nonmagnetic tips and an AC magnetic field applied in situ. The obtained images
Publikováno v:
2011 International Conference on Infrared, Millimeter, and Terahertz Waves.
We demonstrate a FTIR system that allows for infrared-spectroscopic nano-imaging with a thermal source (nano-FTIR). Based on super-focusing of thermal radiation with an infrared antenna and strong signal enhancement using an asymmetric FTIR spectrome
Publikováno v:
2011 International Reliability Physics Symposium.
We use ultra-resolving terahertz (THz) near-field microscopy based on THz scattering at atomic force microscope tips to analyze 65-nm technology node transistors. Nanoscale resolution is achieved by THz field confinement at the very tip apex to withi
Publikováno v:
Nature materials. 10(5)
Fourier-transform infrared (FTIR) spectroscopy is a widely used analytical tool for chemical identification of inorganic, organic and biomedical materials, as well as for exploring conduction phenomena. Because of the diffraction limit, however, conv