| Records |
| Author |
Tutzauer, H.; Esquinazi, P.; de la Cruz, M.E.; de la Cruz, F. |
| Title |
Production of ribbon quenched samples using an arc furnace |
Type |
Journal Article |
| Year |
1980 |
Publication |
Review of Scientific Instruments |
Abbreviated Journal |
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| Volume |
51 |
Issue |
6 |
Pages |
855-856 |
| Keywords |
FABRICATION; QUENCHING; ELECTRIC ARCS; FURNACES; METALS; ROTATION; CYLINDERS; DATA; LANTHANUM ALLOYS; COPPER ALLOYS; GOLD ALLOYS |
| Abstract |
We describe a new device to produce ribbons of disordered metals by ultrarapid quenching combining an arc furnace with a rotating cylinder. The characterization of samples of disordered La70 Cu30 and La76Au24 prepared using this method shows good agreement with those obtained by other authors for the same alloys. |
| Address |
Centro Atómico Bariloche – Instituto Balseiro |
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AIP |
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BT @ pedrazp @ tutzauer:855 |
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534 |
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| Author |
Favaron, J.; de la Cruz, M.E.; Esquinazi, P.; de la Cruz, F. |
| Title |
Phase diagram and superconductive properties of splat-cooled CuxLa1-x |
Type |
Journal Article |
| Year |
1980 |
Publication |
Physical Review B |
Abbreviated Journal |
Phys. Rev. B |
| Volume |
21 |
Issue |
7 |
Pages |
2804-2808 |
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| Abstract |
The phase diagram of nonequilibrium, splat-cooled CuxLa1-x is interpreted by means of superconductive-transition and x-ray measurements. At the eutectic composition the material is shown to be in a highly disordered state. Measurements of dc resistance and ac susceptibility show that there are two different critical fields at the disordered concentration although there is a unique critical temperature. |
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American Physical Society |
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BT @ pedrazp @ PhysRevB.21.2804 |
Serial |
535 |
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| Author |
de la Cruz, F.; de la Cruz, M.E.; Cotignola, J.M. |
| Title |
Longitudinal Magnetomorphic Effect in Indium Films |
Type |
Journal Article |
| Year |
1967 |
Publication |
Physical Review |
Abbreviated Journal |
Phys. Rev. |
| Volume |
163 |
Issue |
3 |
Pages |
575-578 |
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American Physical Society |
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BT @ pedrazp @ PhysRev.163.575 |
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537 |
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| Author |
Guimpel, J.; de la Cruz, F.; Murduck, J.; Schuller, I.K. |
| Title |
Penetration depth of a superconducting superlattice |
Type |
Journal Article |
| Year |
1987 |
Publication |
Physical Review B |
Abbreviated Journal |
Phys. Rev. B |
| Volume |
35 |
Issue |
7 |
Pages |
3655-3656 |
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| Abstract |
We have measured the magnetic-flux expulsion of a superconducting superlattice and related it to the Meissner penetration depth. The temperature dependence of the penetration depth is in quantitative agreement with theoretical expectation based on mean-field theory. The zero-temperature penetration depth is found in excellent, quantitative agreement without adjustable parameters with theoretical predictions for dirty superconductors. |
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American Physical Society |
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Rapid Communications |
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BT @ pedrazp @ 10.1103/PhysRevB.35.3655 |
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538 |
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| Author |
Guimpel, J.; Civale, L.; de la Cruz, F.; Murduck, J.M.; Schuller, I.K. |
| Title |
Dimensional phase transition in superconductors with short coherence length |
Type |
Journal Article |
| Year |
1988 |
Publication |
Physical Review B |
Abbreviated Journal |
PRB |
| Volume |
38 |
Issue |
4 |
Pages |
2342-2344 |
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| Abstract |
We found a novel dimensional transition in the vortex lattice of a finite-sized superconductor. The low-field dependence (with field applied parallel to the film plane) of the magnetization exhibits two maxima, which signal the transition from one to two dimensions. In one dimension the vortices line up along the film, and with increasing field their arrangement changes into a two-dimensional array due to the competition between vortex-surface and vortex-vortex repulsion. Agreement is found with no adjustable parameter calculations using a priori known surface-barrier and vortex-repulsion effects. |
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American Physical Society |
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BT @ pedrazp @ 10.1103/PhysRevB.38.2342 |
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539 |
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| Author |
Guimpel, J.; de la Cruz, F. |
| Title |
Electrical resistivity of amorphous Zr70Cu30 and the Kondo like model |
Type |
Journal Article |
| Year |
1982 |
Publication |
Solid State Communications |
Abbreviated Journal |
Solid State Commun. |
| Volume |
44 |
Issue |
7 |
Pages |
1045-1046 |
| Keywords |
Zr70Cu30; superconductivity; electrical resistivity; ZIRCONIUM COPPER ALLOYS |
| Abstract |
Electrical resistivity measurements of amorphous Zr70Cu30 as a function of the concentrations of two level systems show that a Kondo like theory cannot explain the observed temperature dependence. |
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0038-1098 |
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BT @ pedrazp @ |
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540 |
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| Author |
Duran, C.; Yazyi, J.; de la Cruz, F.; Bishop, D.J.; Mitzi, D.B.; Kapitulnik, A. |
| Title |
Flux-lattice melting, anisotropy, and the role of interlayer coupling in Bi-Sr-Ca-Cu-O single crystals |
Type |
Journal Article |
| Year |
1991 |
Publication |
Physical Review B |
Abbreviated Journal |
PRB |
| Volume |
44 |
Issue |
14 |
Pages |
7737-7740 |
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We have used the high-Q mechanical-oscillator technique to probe the vortex-lattice structure in high-quality Bi-Sr-Ca-Cu-O single crystals over a wide range of magnetic fields (200 Oe to 40 kOe), and relative orientations θ between the magnetic field and the crystalline c^ axis. In addition to the large softening and dissipation peak previously observed and interpreted as due to flux-lattice melting, another distinctly different peak at higher temperatures is seen. The temperatures where the dissipation peaks take place are solely defined by the parallel component of the field cosθ, while the restoring force on the oscillator is due to both field components. We suggest that the two peaks are due to the softening of interplanar coupling at the low-temperature peak, and melting or depinning of the two-dimensional pancake vortices at the higher-temperature peak. |
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American Physical Society |
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Rapid Communication |
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BT @ pedrazp @ 10.1103/PhysRevB.44.7737 |
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543 |
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| Author |
de la Cruz, F.; de la Cruz, M.E.; Cotignola, J.M. |
| Title |
Efecto magnetomorfico longitudinal en laminas de In |
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Report |
| Year |
1968 |
Publication |
Informe Tecnico CNEA |
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Issue |
217 |
Pages |
1-16 |
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Buenos Aires |
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0325-1403 |
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BT @ pedrazp @ |
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545 |
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| Author |
de la Cruz, F.; Bressan, O.J. |
| Title |
Sensitive Hot Wire Level Detector for Cryogenic Liquids |
Type |
Journal Article |
| Year |
1969 |
Publication |
Review of Scientific Instruments |
Abbreviated Journal |
Rev. Sci. Instrum. |
| Volume |
40 |
Issue |
3 |
Pages |
483-486 |
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| Abstract |
A very simple and highly sensitive ``hot wire'' type level detector to be used with cryogenic liquids is described. The hot filament is made of tungsten wire of about 4 µ diam. The tests on the sensor were made moving the filament in and out of the quiescent surfaces of liquid helium and nitrogen. The results showed 0.006 mm sensitivity in the determination of liquid helium level and 0.002 mm sensitivity in the case of liquid nitrogen level. The sensor is assembled in such a way that it can be used without special precautions during indefinite periods of time. For the case when the full capabilities of the sensor are not necessary, a simple circuit is presented. |
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BT @ pedrazp @ |
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549 |
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| Author |
Bressan, O.J.; Ridner, A.E.; de la Cruz, F. |
| Title |
Low angle electron scattering in thermal resistivity |
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Journal Article |
| Year |
1975 |
Publication |
Journal of Physics F: Metal Physics |
Abbreviated Journal |
J. Phys. F: Met. Phys. |
| Volume |
5 |
Issue |
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Pages |
1902-1909 |
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| Abstract |
Electrical ( rho ) and thermal (W) resistivity measurements in very dilute In alloys between 1K and 4K show a temperature dependence expressed by rho = rho 0+ beta T5 and WT=(WT)0+AT3+BT5. The BT5 term in the thermal resistivity is due to a contribution from a 'diffusion-like process' of electrons over the Fermi surface, as is the one that describes the temperature dependence of the electrical resistivity. This claim is supported by the experimental fact that the Lorenz number defined as L= beta /B coincides with the value given by L= rho 0/(WT)0 which in turn agrees with the free electron value within 15%. |
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550 |
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