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Article
Functional Properties of Highly Textured Fe–Ni–Co–Al–Ti–B Shape Memory Alloy Wires
The effect of thermomechanical treatments on grain size and precipitate evolution as well as their impact on the shape memory properties of cold-drawn Fe41–Ni28–Co17–Al11.5–Ti2.5–B0.05 (at. %) wires were studied....
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Article
Open AccessStabilization of the ζ-Cu10Sn3 Phase by Ni at Soldering-Relevant Temperatures
A current issue in electrical engineering is the enhancement of the quality of solder joints. This is mainly associated with the ongoing electrification of transportation as well as the miniaturization of (pow...
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Article
Open AccessPromoting abnormal grain growth in Fe-based shape memory alloys through compositional adjustments
Iron-based shape memory alloys are promising candidates for large-scale structural applications due to their cost efficiency and the possibility of using conventional processing routes from the steel industry....
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Article
Comparison of Room Temperature and Cryo-Deformation Effects on Mechanical Properties and Microstructure of Copper
The objective of this work is to study the effect of room temperature (RT) and liquid nitrogen temperature (LNT) rolling on mechanical properties of the pure copper. For the same percentage deformation, LNT s...
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Article
Upper Critical Field Measurements up to 60 T in Arsenic-Deficient LaO0.9F0.1FeAs1−δ : Pauli Limiting Behavior at High Fields vs. Improved Superconductivity at Low Fields
We report resistivity and upper critical field B c2(T) data for As-deficient LaO0.9F0.1FeAs1−δ in a wide temperature and field range up to 60 T. These disordered s...
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Article
Quantum Transport and Cyclotron Resonance Study of Ge/SiGe Quantum Wells in High Magnetic Fields
Shubnikov-de Haas oscillation and cyclotron resonance were studied for high mobility p-type Ge channels in strained Ge/Si1−x Ge x quantum wells, using pu...
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Article
Formation of the microstructure in Cu-Nb alloys
In order to increase the mechanical strength of copper while retaining its high electrical conductivity the copper matrix is strengthened by Nb particles. For thermodynamical reasons the mutual solubility of N...
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Article
Mechanical alloying of copper with niobium and molybdenum
Copper has been mechanically alloyed with the bcc structure type elements Nb and Mo in order to obtain a material with high strength, good ductility and good electrical conductivity. In the case of alloying Cu...
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Article
The High Field Project at Dresden/Rossendorf: A Pulsed 100 T/10 ms Laboratory at an Infrared Free-Electron-Laser Facility
This article describes the project to build a pulsed magnetic field user laboratory at the Forschungszentrum Rossendorf near Dresden. Using a 50 MJ/24 kV capacitor bank, pulsed fields and rise times of 100 T/1...
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Article
Influence of disorder on superconductivity in non-magnetic rare-earth nickel borocarbides
The effect of substitutional disorder on the superconducting properties of YNi2B2C was studied by partially replacing yttrium and nickel by Lu and Pt, respectively. For the two series of (Y, Lu)Ni2B2C and Y(Ni, P...
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Chapter
Specific heat and disorder in the mixed state of non- magnetic borocarbides and a comparison with exotic superconductors
The temperature and magnetic field dependence of the specific heat cp(T, H) in the superconducting (sc) mixed state and the upper critical field HC2(T) of disordered polycrystalline Y x ...
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Chapter
Crystal Field Effects in Borocarbides Studied by Inelastic Neutron Scattering
To determine low lying crystal field (CF) excitations for the class of RNi211B2C compounds with R = Pr, Tb, Dy, Ho, Er, Tm, Yb we performed inelastic neutron scattering experiments on the magnetically diluted Rx;...
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Chapter
Magnetoelastic Effects in Rare Earth Nickel Borocarbides
For RNi2B2Cwith R = Ho, Dy, Nd, Tb and Er magnetoelastic effects are investigated by high-resolution neutron diffraction experiments on polycrystalline samples. For compounds with R = Ho and Dy a magnetostriction...
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Chapter
Influence of Disorder on Superconductivity in Rare-Earth Nickel Borocarbides
The superconducting properties of pseudo-quaternary Hox R 1_xNi2B2C compounds with R = Y and Lu and of nonmagnetic YxLu1-xNi2B2C compounds have been investigated. The superconducti...
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Chapter
Specific Heat of YxLu1-xNi2B2C in the Mixed State
The temperature and magnetic field dependences of the electronic specific heat c p in the superconducting mixed state as well as the upper critical field H ...
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Chapter
Anomalous Behavior of Pr-Based Borocarbides: Comparison with Cuprates
Results on magnetic properties, electrical resistivity, magnetore-sistance and specific heat of PrNi2B2C (Prl221) are reported. The behavior of Prl221 deviates strongly from that of “normal” magnetic borocarbides...
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Chapter
Magnetic Order and Superconductivity in Ho1-xLu(Y)xNi2B2C
It is well known that antiferromagnetic structures coexist with superconductivity for R = Tm, Er, Ho, and Dy in RNi2B2C where for Tm, Er and Ho the magnetic ordering temperature TN is below the superconducting tr...
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Chapter
Impurity Scattering in Rare-Earth Nickel Borocarbides
The suppression of the superconducting transition temperature Tc of pseudo-quaternary R x R + 1-xNi2B2C compounds (R, R† = Sc, Y, La or rare earth e...
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Chapter
Coexistence of Superconductivity and Magnetism in Borocarbides
The interplay of rare-earth magnetism and superconductivity has been a topic of interest for many years. In cuprates as well as in the classical magnetic superconductors the superconducting state usually coexi...
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Article
Anomalous Behaviour of PrNi2B2C Borocarbide
Electrical resistivity ρ(T), specific heat C p(T), magnetic susceptibility χ(T), and magnetization M(H) have been measured for polycrystalline PrNi 2 B 2 C. Maxima in C p(T) and |dχ(T)/dT| dependencies were foun...
