TY - JOUR
T1 - Multipole ordering in f electron systems
AU - Sakakibara, T.
AU - Tayama, T.
AU - Tenya, K.
AU - Yokoyama, M.
AU - Amitsuka, H.
AU - Aoki, D.
AU - Ōnuki, Y.
AU - Kletowski, Z.
AU - Kunii, S.
PY - 2002
Y1 - 2002
N2 - We discuss multipole ordering in two cubic f-electron compounds. Field variation of the antiferroquadrupolar transition temperature TQ in PrPb3 is determined by the specific heat and the magnetization measurements. It is found that TQ(H) shows a pronounced increase for H ∥ 〈 100 〉, which has been successfully explained by the antiferromagnetic interaction between the field-induced staggered moment in the O20(∝ 2Jz2 - Jx2 - Jy2 AFQ phase. From the analysis of the anisotropy in TQ(H), the importance of an octupolar interaction is pointed out. The new ordered state in CexLa1-xB6 (x < 0.8), called phase IV, has been examined by magnetization measurements under uniaxial pressures. A pronounced anisotropy is observed at a relatively weak pressure, and the ordering temperature seems to increase in magnetic field. The results are discussed in view of a possible octupolar ordering in phase IV.
AB - We discuss multipole ordering in two cubic f-electron compounds. Field variation of the antiferroquadrupolar transition temperature TQ in PrPb3 is determined by the specific heat and the magnetization measurements. It is found that TQ(H) shows a pronounced increase for H ∥ 〈 100 〉, which has been successfully explained by the antiferromagnetic interaction between the field-induced staggered moment in the O20(∝ 2Jz2 - Jx2 - Jy2 AFQ phase. From the analysis of the anisotropy in TQ(H), the importance of an octupolar interaction is pointed out. The new ordered state in CexLa1-xB6 (x < 0.8), called phase IV, has been examined by magnetization measurements under uniaxial pressures. A pronounced anisotropy is observed at a relatively weak pressure, and the ordering temperature seems to increase in magnetic field. The results are discussed in view of a possible octupolar ordering in phase IV.
KW - A. Intermetallic compounds
KW - D. Crystal fields
KW - D. Magnetic properties
KW - D. Phase transitions
UR - http://www.scopus.com/inward/record.url?scp=0036602739&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0036602739&partnerID=8YFLogxK
U2 - 10.1016/S0022-3697(02)00151-8
DO - 10.1016/S0022-3697(02)00151-8
M3 - Article
AN - SCOPUS:0036602739
SN - 0022-3697
VL - 63
SP - 1147
EP - 1153
JO - Journal of Physics and Chemistry of Solids
JF - Journal of Physics and Chemistry of Solids
IS - 6-8
ER -