Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Wolfgang Kipferl"'
Publikováno v:
2020 31st Annual SEMI Advanced Semiconductor Manufacturing Conference (ASMC)
This paper describes a plan of tests and several results of experiments that were performed to determine whether wafers that were milled using an inline xenon (Xe) plasma focused ion beam (PFIB) could continue processing through the standard producti
Autor:
Dominique Bougeard, Achim Trampert, Matthias Sperl, A. Bergmaier, S. Ahlers, H. Riedl, G. Dollinger, Gerhard Abstreiter, Wolfgang Kipferl
Publikováno v:
Physica E: Low-dimensional Systems and Nanostructures. 32:422-425
We present structural, magnetic and transport properties of Mn-doped Ge layers grown by molecular beam epitaxy (MBE) at low substrate temperatures Ts. Atomic force microscopy (AFM), reflection high energy electron diffraction (RHEED) and transmission
Autor:
Matthias Döppe, Ursula Wurstbauer, Werner Wegscheider, Hans-Peter Tranitz, Klaus Wagenhuber, Wolfgang Kipferl, Matthias Reinwald, Dieter Weiss
Publikováno v:
Journal of Crystal Growth. 278:690-694
We demonstrate the possibility to produce both GaAs/AlGaAs heterostructures with high electron mobilities and (Ga,Mn)As by molecular beam epitaxy (MBE) in the same growth chamber. The (Ga,Mn)As samples have been grown on (0 0 1) and (3 1 1)A GaAs sub
Publikováno v:
Journal of Applied Physics. 93:8230-8235
The thickness dependence of the fourfold in-plane magnetic anisotropy was first observed in epitaxial Fe(001) films and described by the volume anisotropy of bcc Fe with a positive anisotropy constant (K1vol>0) superimposed by a negative interface te
Publikováno v:
Journal of Applied Physics. 95:7417-7419
Dot arrays with dots of well-defined circular shape have been patterned from epitaxial Fe films on GaAs(001). Magnetization reversal and temperature dependence of the spontaneous magnetization were studied by superconducting quantum interference devi
Publikováno v:
Journal of Applied Physics. 93:7601-7603
Thermal spin excitations in confined ferromagnetic structures become increasingly important, e.g., because they reduce tunnel magnetoresistance in highly integrated magnetic memories and the stability of stored information. Here, the effect of latera
Publikováno v:
Journal of Applied Physics. 99:08J703
Spin-wave theory predicts reduced thermal spin-wave excitations due to a magnetic anisotropy. Recent results show that a strong uniaxial in-plane anisotropy in ultrathin Fe/GaAs(001) films indeed stabilizes the ferromagnetic order versus thermal spin
Autor:
Günther Bayreuther, Matthias Sperl, M. Zistler, J. Lodermeyer, S. Jordan, E. Diaconu, Wolfgang Kipferl, Heiner J. Gores, Michael Multerer
Publikováno v:
Journal of The Electrochemical Society. 153:C242
Electroplating of dysprosium from several nonaqueous solutions and from an ionic liquid was studied. Dysprosium metal was used as the anode material, and several metals and a silicon wafer with a vacuum-deposited gold layer were used as cathode mater
Publikováno v:
Journal of Applied Physics. 97:10D505
A magnetic tunnel transistor with spin-valve metallic base and epitaxial Schottky barrier is used to probe the temperature and energy dependence of the magnetocurrent. The magnetocurrent ratio (MCR) reaches values up to 900% in our ultrathin microstr
Publikováno v:
Journal of Applied Physics. 97:10B313
Epitaxial Fe(001) films with thicknesses less than 20 monolayers were grown on epitaxial Au(001) surfaces by molecular beam epitaxy. All films have a fourfold anisotropy and a negligible uniaxial component. In contrast, the magnetic behavior of Fe fi