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Author (down) Sereni, J.G.; Radu, T.; Pikul, A. openurl 
  Title Analysis of the very low temperature phase diagrams of two Ce compounds Type Journal Article
  Year 2008 Publication Journal of Optoelectronics and Advanced Materials Abbreviated Journal  
  Volume 10 Issue 7 Pages 1645-1650  
  Keywords  
  Abstract A rich variety of behaviours have been found studying the physical properties of Ce-lattice systems tuned around their critical regions, particularly in the few phase boundaries traced along more than a decade of temperature. The phase diagram of two Ce-systems: the antiferromagnetic CeIn3-xSnx and ferromagnetic CePd1-xRhx are analyzed covering the 10K > T > 0.02K range of temperature. Their respective magnetic phase diagrams are described as an interplay between different components determined after analyzing their thermodynamic properties. In the former compound, signs for the formation of a new phase are observed at very low temperature, whereas in the latter a field induced contribution is detected behind the critical point.  
  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 1454-4164 ISBN Medium  
  Area Expedition Conference  
  Notes ISI:000257962300015 Approved no  
  Call Number BT @ hernan @ Serial 48  
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Author (down) Pikul, A.P.; Caroca-Canales, N.; Deppe, M.; Gegenwart, P.; Sereni, J.G.; Geibel, C.; Steglich, F. doi  openurl
  Title Non-Fermi-liquid behaviour close to the disappearance of ferromagnetism in CePd1-xRhx Type Journal Article
  Year 2006 Publication Journal of Physics: Condensed Matter Abbreviated Journal J. Phys.: Condens. Matter.  
  Volume 18 Issue 42 Pages L535-L542  
  Keywords  
  Abstract The orthorhombic CePd1- xRhx system exhibits a continuous evolution from ferromagnetic order in CePd ( T-C = 6.6 K) to an intermediate-valence ground state in CeRh. Here we report low-temperature ( T >= 0.08 K) specific-heat measurements for concentrations 0.80 <= x <= 0.95 close to the disappearance of magnetic order (similar to 0.87). In contrast to x = 0.8, still demonstrating a smeared phase transition signature at 0.27 K, non-Fermi-liquid behaviour Delta C(T) / T alpha log T is observed in the electronic specific-heat coefficient at x = 0.85. For higher Rh concentrations a weak power-law dependence Delta C(T) / T alpha T-alpha with alpha approximate to 0.4 is found. Upon applying magnetic fields Fermi-liquid-like behaviour Delta C(T) / T similar to const is recovered in all the different samples. The magnetic entropy as well as the concentration of unscreened magnetic moments at 2 K indicate a broad distribution of local T-K values ranging from well below 2 K to far above 50 K.  
  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 0953-8984 ISBN Medium  
  Area Expedition Conference  
  Notes ISI:000241278000001 Approved no  
  Call Number BT @ hernan @ Serial 54  
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