| Records |
| Author |
Arce, R.; de la Cruz, F.; Fink, H.J. |
| Title |
Model relating superconductive penetration depth and metallurgical phase separation in amorphous La70Cu30 |
Type |
Journal Article |
| Year |
1982 |
Publication |
Solid State Communications |
Abbreviated Journal |
Solid State Commun. |
| Volume |
42 |
Issue |
8 |
Pages |
575-577 |
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| Abstract |
A model is proposed to account for the large increase in the measured penetration depth of superconducting, amorphous La70Cu30 when the specimens are annealed sufficiently long near, but below, the crystallization temperature. It is suggested that a metallurgical phase separation occurs with domain dimensions in the submicrometer range. Penetration depth measurements as a function of temperature in a weak magnetic field are a useful tool to detect changes in phase separation in high-K materials. |
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0038-1098 |
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BT @ pedrazp @ |
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567 |
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| Author |
Luzuriaga, J.; D'Ovidio, C.; de la Cruz, F. |
| Title |
Ideal two dimensional flux pinning induced by annealing in superconducting amorphous Zr75Rh25 |
Type |
Journal Article |
| Year |
1986 |
Publication |
Solid State Communications |
Abbreviated Journal |
Solid State Commun. |
| Volume |
57 |
Issue |
9 |
Pages |
753-756 |
| Keywords |
ZIRCONIUM COMPOUNDS – Physical Properties; CRITICAL CURRENT; FLUX PINNING; MELT SPINNING; PINNING FORCES; SUPERCONDUCTING MATRIX; SUPERCONDUCTING MATERIALS |
| Abstract |
By annealing amorphous Zr75Rh25 prepared by melt spinning an ideal behaviour of the critical current was observed, in which the measured pinning forces are seen to follow the two dimensional Larkin-Orchivnikov theory. In the region where this theory is valid the changes in the pinning forces can be explained by the changes in the superconducting matrix and it can be assumed that the pinning centers do not change with the heat treatment. |
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Centro Atomico Bariloche, Instituto Balseiro, 8400 Bariloche, Argentina |
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00381098 (ISSN) |
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Export Date: 28 April 2009; Source: Scopus; CODEN: SSCOA; Language of Original Document: English; Correspondence Address: Luzuriaga, J.; Centro Atomico Bariloche; Instituto Balseiro 8400 Bariloche, Argentina |
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BT @ luzuriag @ |
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501 |
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| Author |
Arce, R.; Civale, L.; Luzuriaga, J.; Guimpel, J.; de la Cruz, F. |
| Title |
Surface normal regions in superconducting Zr70Cu30 induced by thermal relaxation |
Type |
Journal Article |
| Year |
1983 |
Publication |
Solid State Communications |
Abbreviated Journal |
Solid State Commun. |
| Volume |
48 |
Issue |
12 |
Pages |
1027-1030 |
| Keywords |
ZIRCONIUM COPPER ALLOYS – Physical Properties; SUPERCONDUCTING MATERIALS |
| Abstract |
Penetration depth measurements show that thermal heat treatment in amorphous Zr70Cu30 induces a normal region 5000 Å thick at the surface of ultrarapid quenched ribbons. Upper critical field measurements indicate that the new induced phase is a normal one while the rest of the sample remains as a homogeneous superconducting phase. |
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Centro Atómico Bariloche – Instituto Balseiro |
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00381098 (ISSN) |
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Export Date: 28 April 2009; Source: Scopus; CODEN: SSCOA; Language of Original Document: English; Correspondence Address: Arce, R.; Centro At |
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BT @ luzuriag @ |
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502 |
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| Author |
Civale, L.; de la Cruz, F.; Luzuriaga, J. |
| Title |
Critical temperature and density of states in amorphous Zr70Cu30 |
Type |
Journal Article |
| Year |
1983 |
Publication |
Solid State Communications |
Abbreviated Journal |
Solid State Commun. |
| Volume |
48 |
Issue |
4 |
Pages |
389-391 |
| Keywords |
ZIRCONIUM COPPER ALLOYS |
| Abstract |
By means of thermal heat treatment of amorphous Zr70Cu30 it is shown that the induced decrease in critical temperature is followed by a reduction in the electronic density of states of the same magnitude as that obtained by changing the Cu concentration. This result indicates that the density of states is the fundamental microscopic parameter determining the superconducting behavior. |
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Centro Atomico Bariloche |
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00381098 (ISSN) |
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Cited By (since 1996): 1; Export Date: 28 April 2009; Source: Scopus; CODEN: SSCOA; Language of Original Document: English; Correspondence Address: Civale, L.; Centro At |
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BT @ luzuriag @ |
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503 |
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| Author |
Arce, R.; de la Cruz, F.; Esquinazi, P. |
| Title |
Superconducting penetration depth in amorphous metals |
Type |
Journal Article |
| Year |
1981 |
Publication |
Solid State Communications |
Abbreviated Journal |
Solid State Commun. |
| Volume |
38 |
Issue |
12 |
Pages |
1253-1255 |
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We show that temperature dependent penetration depth measurements can be used to characterize the superconductive behaviour of amorphous metals. |
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0038-1098 |
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no |
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BT @ pedrazp @ |
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557 |
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| Author |
Luzuriaga, J.; de la Cruz, F. |
| Title |
Reversible magnetization of surface superconductivity |
Type |
Journal Article |
| Year |
1978 |
Publication |
Solid State Communications |
Abbreviated Journal |
Solid State Commun |
| Volume |
25 |
Issue |
8 |
Pages |
605-607 |
| Keywords |
MAGNETIZATION; SUPERCONDUCTING MATERIALS |
| Abstract |
Direct measurements of the surface superconducting magnetization of the PbTl system shows that this state is a thermodynamic reversible one. |
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Centro Atómico Bariloche |
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00381098 (ISSN) |
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no |
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BT @ luzuriag @ |
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505 |
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| Author |
Cotignola, J.M.; de la Cruz, F.; de la Cruz, M.E.; Platzeck, R.P. |
| Title |
Thermal Conductivity of Polycrystalline Zinc below 1 K |
Type |
Journal Article |
| Year |
1967 |
Publication |
Review of Scientific Instruments |
Abbreviated Journal |
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38 |
Issue |
1 |
Pages |
87-92 |
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Measurements of the thermal conductivity of samples of polycrystalline zinc of thickness 0.1 mm have been carried out between 0.12 and 0.9°K in the normal as well as in the superconducting state to investigate the usefulness of zinc as a thermal switch. The conductivity in the normal state shows a linear dependence on temperature. In the superconducting state it shows a behavior typical of electronic conductivity down to the lowest temperature measured. By applying a magnetic field between 40 and 5000 Oe, magnetoresistivity was also investigated and a strong dependence of thermal conductivity on field was found. Electrical resistivity measurements were performed in magnetic fields at liquid 4He temperatures. The resistivity was found to be independent of temperature for fields up to 9000 Oe. The effect of solder joints using Cd, Sn, In, Zn, and Wood's metal was also investigated, Cd giving the least resistance. The measurements show that zinc should be a useful thermal switch for temperatures below 0.1 and 0.2°K, though effect of a magnetic field on the normal conductivity must be carefully considered. |
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Centro Atómico Bariloche – Instituto Balseiro |
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AIP |
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BT @ pedrazp @ cotignola:87 |
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533 |
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| 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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no |
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BT @ pedrazp @ tutzauer:855 |
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534 |
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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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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 |
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535 |
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de la Cruz, F.; de la Cruz, M.E.; Cotignola, J.M. |
| Title |
Longitudinal Magnetomorphic Effect in Indium Films |
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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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