Zobrazeno 1 - 10
of 49
pro vyhledávání: '"R. Wernhardt"'
Publikováno v:
Applied Surface Science. 254:7401-7404
Liquid metal ion sources (LMISs) with Ga as ion species are widely used in focused ion beam (FIB) technology for micromachining and surface treatment on the sub-micron and nano-scale. Key features of a LMIS for investigating mechanical properties and
Publikováno v:
The European Physical Journal Special Topics. 153:151-154
The lateral modification of the thermal conductivity of a NiTi sample have been measured by scanning thermal microscope using the 3ω-technique. Squares of lateral length in the micrometer range had been drawn in a polycrystalline NiTi sample by a fo
Publikováno v:
Materials Science and Engineering: A. :513-516
In the present study, we investigate the deformation of a pseudo elastic NiTi shape memory alloy, micro structured with the focused ion beam technique, by in situ transmission electron microscopy (TEM). A polycrystalline Ni-rich NiTi shape memory all
Autor:
I. Kamphausen, A. Melnikov, Andreas D. Wieck, Taras Gerya, M. Hillmann, W. Oswald, R. Wernhardt, P. Stauche
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 195:422-425
A liquid metal ion source (LMIS) based on the Au78.2Dy8Si13.8 alloy was developed for focussed ion beam implantation of Dy ions. The mass spectrum of the LMIS shows the presence of Si2+, Si+, Dy3+, Dy2+, Au2+, Au+, Au32+ and Au2+ ions. The Au–Dy–
Autor:
Jhpm Jack Emmen, M. Mittag, D Peligrad, DW Dian-wen Hu, Vam Vic Brabers, M. Rosenberg, R. Wernhardt
Publikováno v:
Superconductor Science and Technology, 7, 214-221. Institute of Physics
A study of the magnetic properties of Bi-2212 single crystals in dependence on field, temperature and time has been carried out in fields up to 14T and in the temperature range 1.8-150 K. The field dependence of the critical current and pinning force
Autor:
R. Wernhardt, W. Oswald, P. Stauche, Andreas D. Wieck, M. Hillmann, I. Kamphausen, A. Melnikov
Publikováno v:
Vacuum. 67:249-251
A liquid metal ion source (LMIS) was fabricated on the basis of a eutectic Dy 69 Ni 31 alloy for use in focused ion beam implantation. The main component of the ion beam is double charged Dysprosium. The electrical parameters of the LMIS are similar
Publikováno v:
Superconductor Science and Technology. 5:16-21
The resistivity of various polycrystalline Bi2-xPbxSr2Ca2Cu3O10+ delta samples has been measured in the temperature range from 95 to 300 K. The rounding of the rho (T) curve above Tc can be satisfactorily described in terms of the Lawrence-Doniach th
Publikováno v:
Review of Scientific Instruments. 79:093703
We develop the theoretical description of 3omega signals from the resistive Wollaston thermal probe (ThP) of a scanning thermal microscope (SThM) in terms of an equivalent low-pass filter. The normalized amplitude and phase frequency spectra are comp
Publikováno v:
Journal of Physics F: Metal Physics. 17:2085-2095
From the study of the electronic and phonon contribution to the specific heat and the temperature and field dependence of the electrical resistivity of the metallic glass Fe20Zr80 the main relevant parameters for the characterisation of the supercond
Publikováno v:
Journal of Physics E: Scientific Instruments. 19:525-532
A fully automated microcalorimeter based on the non-adiabatic relaxation method is described. A new multipurpose interface is presented and experimental details are given covering the electronic circuitry for fast and accurate thermometry, data proce