DPG Phi
Verhandlungen
Verhandlungen
DPG

Dresden 2003 – scientific programme

Parts | Days | Selection | Search | Downloads | Help

TT: Tiefe Temperaturen

TT 14: Postersitzung III (Neue u. unkonventionelle Supraleiter, Anwendungen der Supraleitung, Dünne Schichten, JJs und SQUIDs, Schwere Fermionen, Kondo-Systeme)

TT 14.41: Poster

Wednesday, March 26, 2003, 14:30–19:00, P2c

Electrical resistivity measurements of Ce2Ni2Sn and Ce2Pd2.04Sn0.96 under high pressure — •G. A. Dionicio1, H. Wilhelm1, G. Sparn1, and B. Chevalier21Max-Planck Institut für Chemische Physic fester Stoffe, Nöthnitzer Str. 40, 01187 Dresden — 2Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB-CNRS), Avenue du Docteur A. Schweitzer, 33608 Pessac Cedex, France

Ce2Ni2Sn and Ce2Pd2.04Sn0.96 are Kondo systems which order antiferromagnetically at TN =3.52 K and TN = 4.48 K, respectively. In addition, the second system enters a ferromagnetic phase at TC = 2.2 K. With the aim to study the influence of pressure on the magnetic transition temperatures, electrical resistivity measurements have been performed up to 10 GPa in a Bridgman-type of high pressure cell. We will report experimental data that reveal the suppression of the long-range magnetic order in Ce2Ni2Sn as the pressure is increased. This could be understood as a Kondo compensation of the local moments. On the other side, Ce2Pd2.04Sn0.96 develops pronounced drops in resistivity around 24 K between 1 GPa and 8.26 GPa. The changes in the resistivity are accompanied by some anomalies at slightly higher temperatures. This and further details of the (T,p) phase diagram will be presented.

100% | Mobile Layout | Deutsche Version | Contact/Imprint/Privacy
DPG-Physik > DPG-Verhandlungen > 2003 > Dresden