Please use this identifier to cite or link to this item:
|Type:||Artigo de periódico|
|Title:||Change of the Kondo regime in CePd2Al3 induced by chemical substitution: Verification of the Doniach diagram|
|Abstract:||We report on measurements of specific heat and resistivity for the series of compounds (La1 - xCex)Pd2Al3, for 0 less than or equal to x less than or equal to 1. The chemical substitution with La promotes an increase of the unit cell volume, which is responsible for the changes observed for the ground state of the system. The resistivity results show two distinct behaviors: the Kondo single impurity for low Cc concentration and the Kondo lattice regime for the other end. From the magnetic specific heat results we estimated the Kondo temperature (T-K) Our results show that T-K increases monotonously with Ce concentration but with a strong variation of the Neel temperature. We also estimated the s-f exchange parameter and density of states for the whole series of compounds. A Doniach type diagram is presented including the literature data obtained from pressure experiments. [S0163-1829(99)02313-9].|
|Editor:||American Physical Soc|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.