TY - JOUR
T1 - Anomalous ordered phase in 4f2-based heavy electron PrFe4P12
AU - Aoki, Yuji
AU - Namiki, Takahiro
AU - Matsuda, Tatsuma D.
AU - Sugawara, Hitoshi
AU - Sato, Hideyuki
N1 - Funding Information:
This work is supported partly by a Grant-in-Aid for Scientific Research from the Ministry of Education, Science and Culture and by the REIMEI Research Resources of Japan Atomic Energy Research Institute.
PY - 2002/6
Y1 - 2002/6
N2 - Recent study on the anomalous ordered state (ODS) in filled-skutterudite PrFe4P12 is presented, where the existence of a rare 4f2-based heavy electron (HE) state outside ODS has been experimentally confirmed recently. From specific heat measurements, it is found that the HE behavior is largely suppressed in ODS. The Pr nuclear Schottky contribution strongly indicates that ODS is non-magnetic, most probably of quadrupolar origin. We argue that the quadrupolar degree of freedom on the Pr-ions may play an essential role in the heavy quasiparticle band formation in PrFe4P12. We also report the La-substitution effect on ODS.
AB - Recent study on the anomalous ordered state (ODS) in filled-skutterudite PrFe4P12 is presented, where the existence of a rare 4f2-based heavy electron (HE) state outside ODS has been experimentally confirmed recently. From specific heat measurements, it is found that the HE behavior is largely suppressed in ODS. The Pr nuclear Schottky contribution strongly indicates that ODS is non-magnetic, most probably of quadrupolar origin. We argue that the quadrupolar degree of freedom on the Pr-ions may play an essential role in the heavy quasiparticle band formation in PrFe4P12. We also report the La-substitution effect on ODS.
KW - A. Intermetallic compounds
KW - D. Magnetic properties
KW - D. Phase transitions
KW - D. Specific heat
KW - D. Transport properties
UR - http://www.scopus.com/inward/record.url?scp=0036602761&partnerID=8YFLogxK
U2 - 10.1016/S0022-3697(02)00060-4
DO - 10.1016/S0022-3697(02)00060-4
M3 - 会議記事
AN - SCOPUS:0036602761
SN - 0022-3697
VL - 63
SP - 1201
EP - 1205
JO - Journal of Physics and Chemistry of Solids
JF - Journal of Physics and Chemistry of Solids
IS - 6-8
T2 - Proceedings of the 8th ISSP International Symposium
Y2 - 2 November 2001 through 5 November 2001
ER -