Antiferro-Quadrupolar Ordering and Multipole Interactions in PrPb3

Antiferro-quadrupolar (AFQ) ordering in the cubic Γ 3 ground state system PrPb 3 has been studied by means of magnetization and specific heat measurements under magnetic fields H . Field variation of the AFQ transition temperature T Q (0.4 K at H =0) has been determined for the three crystallographic directions , and . The obtained T Q ( H ) is strongly anisotropic, with T Q ( H ) the largest (∼0.7 K at 6 T). The AFQ phase diagram and the magnetization behavior observed for H ∥ are well explained by a model that incorporates both antiferromagnetic and antiferroquadrupolar interactions. The interactions between field-induced staggered magnetic moments stabilize the AFQ order. This simple model, however, seriously fails to explain the observed anisotropy: T Q ( H )> T Q ( H )> T Q ( H ). Reconsidering the field-induced multipole moments in the AFQ phase, we propose that inclusion of a weak ferro-octupolar interaction between Γ 5 type octupole moments is importa...

[1]  T. Sakakibara,et al.  Interplay of Orbital and Magnetic Degrees of Freedom in f-Electron Systems: The Case of PrPb3 and TmTe (Frontiers in Magnetism) , 2000 .

[2]  H. Shiba,et al.  On the Stability of Quadrupolar Domains in TmTe , 1999 .

[3]  T. Sakakibara.  Magnetization study on the antiferro-quadrupolar ordering in PrPb3 , 1999 .

[4]  T. Sakakibara,et al.  Low Temperature Properties of the Magnetic Semiconductor TmTe , 1998 .

[5]  H. Harima,et al.  Fermi surface properties and metamagnetism in the antiferroquadrupolar compound PrPb3 , 1997 .

[6]  Y. Kuramoto,et al.  Fluctuation effects on the quadrupolar ordering in magnetic field , 1997, cond-mat/9711159.

[7]  Y. Aoki,et al.  Single Crystal Growth and Physical Properties of YbPb3. , 1997 .

[8]  H. Shiba,et al.  Magnetic-Field Effects on Quadrupolar Ordering in a Γ8-Quartet System CeB6 , 1997 .

[9]  Y. Kuramoto,et al.  Mode coupling effects on the quadrupolar ordering in CeB6 , 1996 .

[10]  H. Mitamura,et al.  Faraday Force Magnetometer for High-Sensitivity Magnetization Measurements at Very Low Temperatures and High Fields , 1994 .

[11]  Z. Kletowski,et al.  Single crystal growth of (rare earth)Me3 compounds where Me ≡ Sn, In and Pb☆ , 1985 .

[12]  S. Kunii,et al.  Magnetic phase diagram of CeB6 , 1985 .

[13]  É. D. Lacheisserie,et al.  Magnetic and quadrupolar properties of PrPb3 , 1982 .

[14]  J. Kjems,et al.  Low temperature structural and magnetic properties of PrPb3 , 1982 .

[15]  S. Kunii,et al.  Magnetic properties of CeB6 single crystal , 1980 .

[16]  K. Knorr,et al.  Crystal field splitting of some rare earth intermetallic compounds with Cu3Au structure , 1980 .

[17]  J. Hijmans,et al.  Field dependence of the Néel temperature in pseudo-one-dimensional Heisenberg systems , 1978 .

[18]  J. Villain,et al.  Néel temperature of a low-dimensional antiferromagnet in a magnetic field , 1977 .

[19]  J. Chaussy,et al.  Sign change of the c.e.f. parameters in light rare earth compounds in relation with the delocalization of the 4f shell , 1976 .