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Author (up) Daudin, B. url  doi
openurl 
  Title Thermal conductivity of amorphous La70Cu30 Type Journal Article
  Year 1981 Publication Solid State Communications Abbreviated Journal Solid State Commun.  
  Volume 37 Issue 2 Pages 149-152  
  Keywords La70Cu30; superconductivity; amorphous  
  Abstract We have measured in a temperature range of 0.6 to 6.5 K the thermal conductivity of various samples of amorphous La70Cu30 prepared by ultra rapid quenching. Below the superconducting critical temperature (Tc=3.85K) we found the classical amorphous behaviour and determined the coupling constant n0M2. Above Tc we found that the thermal conductivity was governed by the electron-phonon interaction and we discuss the results obtained.  
  Address Centro Atómico Bariloche – Instituto Balseiro  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0038-1098 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number BT @ pedrazp @ Serial 556  
Permanent link to this record
 

 
Author (up) de la Cruz, F. url  openurl
  Title Structural relaxation: low temperature properties Type Conference Article
  Year 1984 Publication Abbreviated Journal  
  Volume Issue Pages 269  
  Keywords ALLOY SYSTEMS, AMORPHOUS STATE, COPPER ALLOYS, SUPERCONDUCTING COMPOSITES, TEMPERATURE DEPENDENCE, ZIRCONIUM BASE ALLOYS  
  Abstract We discuss the changes in transport and superconducting properties of amorphous Zr70Cu30,

induced by thermal relaxation The experimental results are used to investigate the

relation between the microscopic parameters and the observed physical properties It

is shown that the density of eletronic states determines the shift Tc as well as the

variation of the electrical resistivity It is necessary to assume strong hybridization

between s and d bands to understand the eletrodynamic response of the superconductor

(Author)
 
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Brazil Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title Proceedings of the Latin American Symposium of Physics of Amorphous Systems – v1  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number BT @ pedrazp @ Serial 813  
Permanent link to this record
 

 
Author (up) Durán, C.; Esquinazi, P.; Luzuriaga, J.; Brandt, E.H. doi  openurl
  Title Bc1 of high-Tc La1.8Sr0.2CuO4 and amorphous Zr70Cu30 superconductors measured by a vibrating reed Type Journal Article
  Year 1987 Publication Physics Letters A Abbreviated Journal Phys. Lett. A  
  Volume 123 Issue 9 Pages 485-488  
  Keywords Zr70Cu30; ZIRCONIUM COPPER ALLOYS – Amorphous  
  Abstract The lower critical field Bc1 of the high-Tc superconductor La1.8Sr0.2CuO4 (Tc=40 K, Bcless-than-or-equals, slant7.7 mT) and of amorphous Zr70Cu30 (Tc=2.6K, Bc1less-than-or-equals, slant3.8 mT) is obtained from the resonance frequency ?/2? of a vibrating reed made of these materials. At applied magnetic fields Ba<Bc1, ?(Ba)=?i(Ba) as predicted for an ideally diamagnetic reed. Above Bc1 we observe a reversible linear law ?2??2inot, vert, similarB2a?B2c1. This allows a simple definition of Bc1 even in ceramic superconductors into which flux starts to penetrate at Bamuch less-thanBc1 due to their granular structure.  
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0375-9601 ISBN Medium  
  Area Expedition Conference  
  Notes ISI:A1987K407100012 Approved no  
  Call Number BT @ hernan @ Serial 269  
Permanent link to this record
 

 
Author (up) Esquinazi, P.; de la Cruz, F. url  doi
openurl 
  Title Phonon thermal conductivity limited by electron scattering in amorphous Zr70Cu30 Type Journal Article
  Year 1983 Publication Physical Review B Abbreviated Journal Phys. Rev. B  
  Volume 27 Issue 5 Pages 3069-3072  
  Keywords Zr70Cu30; superconductivity; amorphous  
  Abstract The low-temperature thermal conductivity of amorphous Zr70Cu30 is investigated. The lattice thermal conductivity as limited by electrons in the superconducting state has been obtained at temperatures close to Tc. This has allowed for the first time the verification of the temperature dependence of the phonon conductivity as predicted by Bardeen, Rickayzen, and Tewordt. The analysis of the data in the normal and superconducting state shows that Matthiessen's rule can be used in amorphous metals to separate the different scattering processes.  
  Address  
  Corporate Author Thesis  
  Publisher American Physical Society Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number BT @ pedrazp @ 10.1103/PhysRevB.27.3069 Serial 560  
Permanent link to this record
 

 
Author (up) Osquiguil, E.; Frank, V.L.P.; de la Cruz, F. url  doi
openurl 
  Title Two dimensional collective flux pinning in melt spun superconducting amorphous Zr70Cu30 Type Journal Article
  Year 1985 Publication Solid State Communications Abbreviated Journal Solid State Commun.  
  Volume 55 Issue 3 Pages 227-230  
  Keywords ZIRCONIUM COPPER ALLOYS – Amorphous; CRITICAL CURRENTS; PINNING FORCES; SUPERCONDUCTING MATERIALS  
  Abstract We have measured the critical currents in melt spun amorphous Zr70Cu30 and their evolution with heat treatment. We found that the pinning forces may be interpreted in terms of the Larkin-Ovchinnikov two dimensional collective pinning theory.  
  Address Centro Atómico Bariloche – Instituto Balseiro, Argentina  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 00381098 (ISSN) ISBN Medium  
  Area Expedition Conference  
  Notes Cited By (since 1996): 1; Export Date: 17 April 2009; Source: Scopus; CODEN: SSCOA; Language of Original Document: English; Correspondence Address: Osquiguil, E.J.; Centro At Approved no  
  Call Number BT @ osquigui @ Serial 420  
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