A5005349870- Magnetic properties of thin films
- Magnetic Properties and Applications
- Magnetic Properties of Alloys
- Metallurgical and Alloy Processes
- Microstructure and Mechanical Properties of Steels
- Aluminum Alloy Microstructure Properties
- Theoretical and Computational Physics
- Intermetallics and Advanced Alloy Properties
- Microstructure and mechanical properties
- Metallurgy and Material Forming
- Thermodynamic and Structural Properties of Metals and Alloys
- Metallic Glasses and Amorphous Alloys
- Metal Forming Simulation Techniques
- nanoparticles nucleation surface interactions
- Advanced Chemical Physics Studies
- Metallurgical Processes and Thermodynamics
- Inorganic Fluorides and Related Compounds
- Advanced Materials Characterization Techniques
- Geomagnetism and Paleomagnetism Studies
- Nuclear Materials and Properties
- Rare-earth and actinide compounds
- Material Properties and Applications
- Nuclear reactor physics and engineering
- Solidification and crystal growth phenomena
- X-ray Diffraction in Crystallography
Friedrich-Alexander-Universität Erlangen-Nürnberg
2017-2023
Max Planck Institute for the Science of Light
2020-2023
ETH Zurich
2009
Paul Scherrer Institute
2009
University of Bern
1993
University of Illinois Urbana-Champaign
1980-1991
University of Illinois System
1966-1981
Urbana University
1955-1965
California Institute of Technology
1965
Argonne National Laboratory
1953
A method has been developed for the study of grain boundary migration in high purity aluminum, which allows positive determination direction movements. By means this it was confirmed that boundaries resulting from surface energy takes place toward centers curvature boundaries. On other hand, strain induced migration, such as occurs recrystallization, proceeds a away moving It also found certain strained grains serve nuclei strain-free same orientation grow at expense neighboring grains. Most...
The electronic specific heat coefficient was measured in the temperature range 1.4\ifmmode^\circ\else\textdegree\fi{} to 4.2\ifmmode^\circ\else\textdegree\fi{}K for 48 solid solution alloys following binary systems: Ti-V, V-Cr, V-Fe, Cr-Mn, Cr-Fe, and Fe-Co. vs electron concentration curves show three quite well separated regions of high density states. first these occurs with atomic magnetic moments near zero. second one is found which have increasing concentration, up Fe+35% Co along...
Abstract Optical tweezers are tools made of light that enable contactless pushing, trapping, and manipulation objects, ranging from atoms to space sails. Since the pioneering work by Arthur Ashkin in 1970s, optical have evolved into sophisticated instruments been employed a broad range applications life sciences, physics, engineering. These include accurate force torque measurement at femtonewton level, microrheology complex fluids, single micro- nano-particle spectroscopy, single-cell...
Very small recrystallized grains of a large variety orientations were produced locally in lightly rolled high purity aluminum crystals. The rate growth these varied greatly, depending on their relative orientation with respect to the matrix crystal. Grains an corresponding [111] rotation about 40° showed by far highest growth. These results indicate that recrystallization textures developing spontaneous deformed single crystals can be accounted for dependence
On the assumption that in Ni-Cu alloys spin moment on a Ni atom depends local atomic environment, it was possible to find values for various configurations so as give average moments reasonable quantitative agreement with measured ferromagnetic composition range. The environment is specified by number of nearest neighbors and second-nearest neighbors. This model allows also consistent qualitative interpretation effect low-temperature annealing treatment plastic deformation.
The electronic specific heat coefficient, $\ensuremath{\gamma}$, of V and bcc Ti-V alloys was measured. A maximum $\ensuremath{\gamma}$ occurs at approximately 60 at.% V. coefficients were found to correlate quite well with the superconductive transition temperatures according Bardeen-Cooper-Schrieffer theory, an interaction coefficient $V$ independent composition. From exponential dependence in state on reciprocal temperature, energy gap 0.0014 0.0025 ev calculated, depending
The reflection method for quantitative determination of pole figures, proposed by Schulz, proved to be limited with respect the range tilting angles in which satisfactory results can obtained. It is shown that previously unexplained decrease diffracted intensity increasing angle specimens random orientation distribution accounted on basis an elementary analysis defocusing effects. Experimental evidence presented show variation receiving slit length and main width has effect predicted...
For Ni-Cu solid solutions around the equiatomic composition low-temperature specific-heat term linear in temperature was found to contain a magnetic contribution. The measured $\ensuremath{\gamma}$ for these alloys is, therefore, not representative of electronic specific heat. presence moments with Cu contents as high 0.6 atomic fraction may be concluded from known properties, well results. values Ni-Zn vary electron concentration manner analogous that observed alloys, although available...
The low-temperature (1.4° to 4.2°K) specific heat, the ferromagnetic Curie temperature, and magnetic moment of Ni–Cu solid solutions were measured near composition where ferromagnetism terminates. anomaly in heat cannot be accounted for by bT3 ln T term expected from electron-paramagnon interaction, but it can interpreted as a cluster contribution independent temperature 1.4° 4.2°K. Another is included linear temperature. Whether maximum at 50–54 at.% Cu should attributed this or (enhanced)...
A continuous solid-solution field extends at 1100\ifmmode^\circ\else\textdegree\fi{}C in the Ti-Fe-Co ternary system between CsCl-type binary phases TiFe and TiCo. In Ti-Co-Ni a similar 1175\ifmmode^\circ\else\textdegree\fi{}C from TiCo least to ${\mathrm{Ti}}_{4}$${\mathrm{Co}}_{3}$Ni.The electronic specific heat coefficient of TiFe-TiCo alloys ${\mathrm{Ti}}_{4}$${\mathrm{Co}}_{3}$Ni was found have large peak same average electron concentration where $\ensuremath{\gamma}$ for bcc Cr-Fe occurs.
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We determined the kinetics of spherulite growth in obsidians from Krafla volcano, Iceland. measured water concentration profiles around spherulites obsidian by synchrotron Fourier transform infrared spectroscopy. The distribution OH- groups surrounding decreases exponentially away spherulite-glass border, reflecting expulsion during crystallization an anhydrous paragenesis (plagioclase + SiO2 clinopyroxene magnetite). This pattern is controlled a balance between rate and diffusivity hydrous...