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Author Sereni, J.G.; Huber, T.E.; Luengo, C.A. url  doi
openurl 
  Title Low temperature specific heat of Th-Gd spin glass Type Journal Article
  Year 1979 Publication Solid State Communications Abbreviated Journal Solid State Commun.  
  Volume 29 Issue 9 Pages 671-673  
  Keywords  
  Abstract The specific heat measurements of Th---Gd alloys, with Gd concentration ranging from 0.15% to 10.8% and temperatures between 0.4 and 8 K, are reported. The characteristic spin glass specific heat enhancement and its maximum was found linearly proportional to Gd concentration. At low temperatures a T2 dependence of the specific heat was observed and the entropy associated with the magnetic ordering was the 70% of the expected value for the spin S = 7/2.  
  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 0038-1098 ISBN Medium  
  Area (up) Expedition Conference  
  Notes ISI:A1979GP96400009 Approved no  
  Call Number BT @ hernan @ Serial 139  
Permanent link to this record
 

 
Author Sereni, J.G.; Huber, J.G.; Luengo, C.A.; Maple, M.B. url  doi
openurl 
  Title Calorimetric study of the magnetization of Ce impurities in superconducting Th-Y and Th-Sc alloys Type Journal Article
  Year 1978 Publication Journal of Low Temperature Physics Abbreviated Journal J. Low Temp. Phys.  
  Volume 30 Issue 5-6 Pages 729-737  
  Keywords  
  Abstract Specific heat measurements are reported in detail for the Ce impurity in the superconducting matrix systems Th65Sc35Ce, Th80Y20Ce, and Th65Y35Ce. The variation of the specific heat jump DeltaC at the superconducting transition temperature T c is indicative of the magnetic nature of an impurity. For Th65Y35Ce a departure is found from the BCS law of corresponding states predicted for a nonmagnetic impurity. This departure is correlated with that observed for (La, Th)Ce systems and related to DeltaT c/n (initial slope of T c vs. n) and Ce effective size (implied by lattice parameter data).  
  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 0022-2291 ISBN Medium  
  Area (up) Expedition Conference  
  Notes ISI:A1978EW47300012 Approved no  
  Call Number BT @ hernan @ Serial 140  
Permanent link to this record
 

 
Author Sereni, J.G.; Huber, J.G.; Luengo, C.A.; Maple, M.B. doi  openurl
  Title Specific heat of superconducting Th, Sc and Th, Y alloys with Ce Type Journal Article
  Year 1975 Publication Solid State Communications Abbreviated Journal Solid State Commun.  
  Volume 17 Issue 12 Pages 1581-1583  
  Keywords  
  Abstract Measurements of the specific heat jump ΔC at the superconducting critical temperature Tc on (Image )Ce and (Image )Ce Ce impurity, solid solution alloy systems indicate that the former systems obey the BCS law of corresponding states (LCS) characteristic of superconductors with non-magnetic impurities while the latter systems present deviations from the LCS linear relation between reduced parameters which are attributed to the development of localized moments at the Ce ions as the Y concentration increases.  
  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 0038-1098 ISBN Medium  
  Area (up) Expedition Conference  
  Notes ISI:A1975AZ36600027 Approved no  
  Call Number BT @ hernan @ Serial 141  
Permanent link to this record
 

 
Author Luengo, C.A.; Huber, J.G.; Sereni, J.G.; Sweedler, A.R.; Cotignola, J.M.; Maple, M.B. doi  openurl
  Title Low temperature specific heat of ThU Type Journal Article
  Year 1972 Publication Solid State Communications Abbreviated Journal Solid State Commun.  
  Volume 10 Issue 5 Pages 459  
  Keywords  
  Abstract The low temperature specific heat of the weakly magnetic system Image U has been measured in both the normal and superconducting states. U impurities are found to enhanve the normal state electronic specific heat coefficient γ at an unusually large rate of 4.85 ± 0.50 mJ/mole °K2 at. % U. The specific heat jump at the superconducting transition for an alloy of composition 0.075 at. % U follows the BCS law of corresponding states suggesting that the system Image U is essentially non-magnetic at superconducting temperatures.  
  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 0038-1098 ISBN Medium  
  Area (up) Expedition Conference  
  Notes ISI:A1972L797500015 Approved no  
  Call Number BT @ hernan @ Serial 142  
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Author de la Cruz, M.E.; Cotignola, J.M.; Bressan, O.J.; Luengo, C.A. doi  openurl
  Title Thermal and Electrical Conductivities of Very-High-Purity Indium Type Journal Article
  Year 1968 Publication Physical Review Abbreviated Journal Phys. Rev.  
  Volume 176 Issue 3 Pages 871-875  
  Keywords  
  Abstract Measurements of the thermal and electrical conductivities of a polycrystalline indium sample of very high purity have been performed between 1.5 and 4.2°K and in the presence of longitudinal magnetic fields up to 15 000 Oe. It was found that, within the experimental error, the electrical and thermal Kohler's rules were satisfied, the functional forms for the two being quite similar. The expression for the resistivity as a function of T for the normal state and in zero magnetic field are in good agreement with theory. The Lorenz number obtained by extrapolating to T=0 gives a very high value compared with the theoretical one. Measurements of the thermal conductivity for the superconducting state, in the same temperature range, have been made. The thermal-resistivity ratio Wn / Ws as a function of the reduced temperature does not agree with the results of Kadanoff and Martin.  
  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 (up) Expedition Conference  
  Notes Approved no  
  Call Number BT @ pedrazp @ PhysRev.176.871 Serial 536  
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Author Bressan, O.J.; Ridner, A.E.; Luengo, C.A.; Alascio, B. url  doi
openurl 
  Title On the evidence for electron-electron scattering in the electrical resistivity of In Type Journal Article
  Year 1970 Publication Solid State Communications Abbreviated Journal Solid State Commun.  
  Volume 8 Issue 24 Pages 2129-2133  
  Keywords  
  Abstract Experimental measurements of the electrical magnetoresistivity of high purity Indium at low temperatures have been performed and clearly indicate that:

1. (a) A generalized Kohler's rule can be used to describe all experiments.

2. (b) A reliable method is therefore obtained for extrapolating the zero magnetic field resistivity to temperatures below the superconducting transition temperature.

3. (c) Clear-cut and reliable data show that no T2 dependence of the resistance is found; therefore no evidence of electron-electron interaction appears, contrary to information previously reported in the literature.
 
  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 0038-1098 ISBN Medium  
  Area (up) Expedition Conference  
  Notes Approved no  
  Call Number BT @ pedrazp @ Serial 548  
Permanent link to this record
 

 
Author Luengo, C.A.; Cotignola, J.M.; Sereni, J.G.; Sweedler, A.R.; Maple, M.B. openurl 
  Title Heat capacity of ThU alloys at low temperatures Type Conference Article
  Year 1974 Publication Proceedings of the 13th International Conference on Low Temperature Physics (LT-13) Abbreviated Journal  
  Volume 2 Issue Pages 585  
  Keywords  
  Abstract  
  Address  
  Corporate Author Thesis  
  Publisher Plenum Publishing Corp. Place of Publication New York Editor Timmerhaus, K.D. ; O'Sullivan, W.J. ; Hammel, E.F.  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area (up) Expedition Conference  
  Notes Approved no  
  Call Number BT @ pedrazp @ Serial 552  
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