TY - JOUR
T1 - Effects of pressure on cage-structural compound Ce3Pd 20Ge6
AU - Hidaka, H.
AU - Ramos, S. M.
AU - Hering, E. N.
AU - Fontes, M. B.
AU - Saitovitch, E. B.
AU - Otani, S.
AU - Wakabayashi, T.
AU - Shimizu, Y.
AU - Yanagisawa, T.
AU - Amitsuka, H.
PY - 2012
Y1 - 2012
N2 - We have measured the electrical resistivity of clathrate Ce3Pd20Ge6 under high pressure up to 3.86 GPa in order to investigate pressure effects on two successive phase transitions: O02-type ferroquadrupole order on Ce-8c site at TQ = 1.2 K and antiferromagnetic order on Ce-4a site at TN = 0.75 K. With applying pressure, TQ stays nearly constant at low pressures and gradually decreases above 2 GPa, while TN first increases and then decreases above 2.5 GPa. From these results, critical pressures, where TN and TQ become 0, are roughly estimated to be around 5-6 GPa. In addition, we found that the magnetic resistivity, which is obtained by subtracting the resistivity of La3Pd20Ge6 from that of Ce3Pd20Ge6, exhibits -InT dependence in two different temperature ranges, suggesting presence of two different Kondo temperatures originated in the two crystallographic Ce-sites.
AB - We have measured the electrical resistivity of clathrate Ce3Pd20Ge6 under high pressure up to 3.86 GPa in order to investigate pressure effects on two successive phase transitions: O02-type ferroquadrupole order on Ce-8c site at TQ = 1.2 K and antiferromagnetic order on Ce-4a site at TN = 0.75 K. With applying pressure, TQ stays nearly constant at low pressures and gradually decreases above 2 GPa, while TN first increases and then decreases above 2.5 GPa. From these results, critical pressures, where TN and TQ become 0, are roughly estimated to be around 5-6 GPa. In addition, we found that the magnetic resistivity, which is obtained by subtracting the resistivity of La3Pd20Ge6 from that of Ce3Pd20Ge6, exhibits -InT dependence in two different temperature ranges, suggesting presence of two different Kondo temperatures originated in the two crystallographic Ce-sites.
UR - http://www.scopus.com/inward/record.url?scp=84874834675&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84874834675&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/391/1/012019
DO - 10.1088/1742-6596/391/1/012019
M3 - Conference article
AN - SCOPUS:84874834675
SN - 1742-6588
VL - 391
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012019
T2 - International Conference on Strongly Correlated Electron Systems, SCES 2011
Y2 - 29 August 2011 through 3 September 2011
ER -