Effects of pressure on cage-structural compound Ce3Pd 20Ge6

H. Hidaka, S. M. Ramos, E. N. Hering, M. B. Fontes, E. B. Saitovitch, S. Otani, T. Wakabayashi, Y. Shimizu, T. Yanagisawa, H. Amitsuka

Research output: Contribution to journalConference articlepeer-review

4 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number012019
JournalJournal of Physics: Conference Series
Volume391
Issue number1
DOIs
Publication statusPublished - 2012 Jan 1
Externally publishedYes
EventInternational Conference on Strongly Correlated Electron Systems, SCES 2011 - Cambridge, United Kingdom
Duration: 2011 Aug 292011 Sep 3

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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