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Author Sereni, J.G.; ÄŒurlík, I.; Giovannini, M.; Strydom, A.; Reiffers, M. url  doi
openurl 
  Title Physical properties of the magnetically frustrated very-heavy-fermion compound YbCu4Ni Type Journal Article
  Year (up) 2018 Publication Physical Review B Abbreviated Journal Phys. Rev. B  
  Volume 98 Issue 9 Pages 094420  
  Keywords  
  Abstract The physical properties of the very-heavy-fermion compound YbCu4Ni were characterized through structural, magnetic, thermal, and transport studies along nearly four decades of temperature ranging between 50 mK and 300 K. At high temperature, the crystal electric field level splitting was determined with Δ1(Γ6)=85K and Δ2(Γ8)≈200K, the latter being a quartet in this cubic symmetry. An effective magnetic moment μeff≈3μB is evaluated for the Γ7 ground state, while at high temperature the value for a Yb3+ ion is observed. At low temperature this compound shows the typical behavior of a magnetically frustrated system undergoing a change of regime at a characteristic temperature T∗≈200mK into of Fermi-liquid-type “plateau” of the specific heat: Cm/T|T→0 = const. The change in the temperature dependence of the specific heat coincides with a maximum and a discontinuity in respective inductive and dissipative components of the ac susceptibility. More details about the nature of this ground state are revealed by the specific heat behavior under applied magnetic field.  
  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.98.094420 Serial 826  
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Author ÄŒurlík, I.; Giovannini, M.; Gastaldo, F.; Strydom, A.M.; Reiffers, M.; Sereni, J.G. doi  openurl
  Title Crystal structure and physical properties of the two stannides EuPdSn2 and YbPdSn2 Type Journal Article
  Year (up) 2018 Publication Journal of Physics: Condensed Matter Abbreviated Journal J. Phys. : Condens. Matter  
  Volume 30 Issue 49 Pages 495802  
  Keywords  
  Abstract We report on synthesis, crystal structure and physical properties of the isotypic compounds YbPdSn2 and EuPdSn2 crystallizing in the MgCuAl2-type structure. In both stannides a divalent state of respective rare earth element was found from analysis of the magnetic susceptibilities. Whereas in YbPdSn2 only weak paramagnetic behaviour is observed, in EuPdSn2 a long-range magnetic phase transition occurs at 12.5 K with complex magnetic behaviour evidenced by magnetic susceptibity and specific heat measurements. Under the influence of magnetic field, the magnetic behaviour was found to evolve from an antiferromagnetic to a ferromagnetic state as a consequence of a re-arrangement of magnetic moments.  
  Address  
  Corporate Author Thesis  
  Publisher IOP Publishing Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1361-648x ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number BT @ pedrazp @ Serial 827  
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Author Gastaldo, F.; Gabáni, S.; Džubinská, A.; Reiffers, M.; PristáÅ¡, G.; ÄŒurlík, I.; Skyba, P.; Clovecko, M.; Vavrek, F.; Sereni, J.G.; Giovannini, M. url  openurl
  Title YbPd2In: A promising candidate for strong entropy accumulation at very low temperature Type Journal Article
  Year (up) 2019 Publication Physical Review B Abbreviated Journal Phys. Rev. B  
  Volume 100 Issue 17 Pages 174422  
  Keywords  
  Abstract  
  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.100.174422 Serial 849  
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