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A new study investigates the relationship between texture and the transport critical current density of textured YBa2Cu3Ox plates.

Some materials can exhibit the properties of ferromagnetism amd superconductivity, but both long-range states are normally mutually exclusive. A new study of the compound TmNi2B2C investigates the effect of small-angle neutron scattering which reveals that the symmetry of the flux-line lattice and the magnetic modulation are strongly coupled.

A simple model based on distributions of twin boundaries, dislocations, and BaZrO3 nanorods is employed to describe the [J.sub.c] properties of undoped and BaZr[O.sub.3] (BZO)-doped Y[Ba.sub.2][Cu.sub.3][O.sub.x] thin films. Based on the prediction of the [J.sub.c] properties via the use of the model it is concluded that more crystalline defects are needed for enhancement of undoped films and for the doped films a dopant that would create slightly larger rods would be most favorable.

The Pressless Process (PLP) was adopted to manufacture NdFeB sintered magnets, where the investigations on carbon and oxygen residues from heptane milling liquid media and graphite crucibles used for sintering were quantified to evaluate the influence on the magnetic characteristics. The carbon and oxygen content in the magnets produced from wet ball milling of strip cast flakes was found to be of the order 10 4 ppm and 4·10 4 ppm respectively, which resulted in soft magnetic behavior. However using jet milling the carbon and oxygen concentration were decreased by an order of magnitude resulting in coercivity of up to 829 kA/m. Thus the influence of the carbon from the graphite crucibles is small. [ABSTRACT FROM AUTHOR]

Abstract: This paper describes Superwind HTS machine laboratory setup which is a small scale HTS machine designed and build as a part of the efforts to identify and tackle some of the challenges the HTS machine design may face. One of the challenges of HTS machines is a Torque Transfer Element (TTE) which is in this design integral part of the cryostat. The discussion of the requirements for the TTE supported with a simple case study comparing a shaft and a cylinder as candidates for TTE are presented. The discussion resulted with a cylinder as a TTE design rated for a 250Nm and with more then 10 times lower heat conduction compared to a shaft. The HTS machine was successfully cooled to 77K and tests have been performed. The IV curves of the HTS field winding employing 6 HTS coils indicate that two of the coils had been damaged. The maximal value of the torque during experiments of 78Nm was recorded. Loaded with 33%, the TTE performed well and showed suffcient margin for future experiments. [Copyright &y& Elsevier]

Abstract: In situ synchrotron x-ray diffraction is used to study the phase and texture formation of ceria based films and superconductor films deposited by the chemical solution method on technical substrates. Combined analysis using in situ synchrotron x-ray diffraction, thermogravimetry/differential thermal analysis and Fourier transform infra-red (FTIR) spectroscopy allows to study the details on the decomposition and crystallization processes of ceria based in form of bulk and film. The success of this work demonstrates the possibility of studying chemical reaction pathway and texture evolution of oxides starting from solution precursors using non destructive method. [Copyright &y& Elsevier]

Studies the relation between texture and critical current density of textured YBa[sub 2]Cu[sub 3]O[sub x] superconducting plates. Current density as a function of applied magnetic field; Critical current density in zero magnetic field; X-ray diffraction patterns for YBCO plates.