Chihiro Sekine

Possible Octupole Ordering in Phase II of SmRu4P12 Suggested from Elastic Constants

We have studied the origin of the successive phase transitions in filled skutterudite SmRu 4 P 12 based on the results of elastic constant measurements. The temperature dependence of the elastic co...

Specific Heat Study on Sm-based Filled Skutterudite Phosphides SmT4P12(T=Fe, Ru and Os)

Sm-based filled skutterudite phosphides SmFe 4 P 12 , SmRu 4 P 12 and SmOs 4 P 12 synthesized at high temperatures and high pressures have been studied by specific heat measurements in magnetic fields. SmFe 4 P 12 shows an anomaly at 1.6 K attributed to a ferromagnetic transition. SmRu 4 P 12 shows a metal–insulator transition at 16 K. This transition consists of two successive transitions, which suggests orbital and antiferromagnetic orderings. SmOs 4 P 12 shows a sharp anomaly at 4.5 K due to an antiferromagnetic ordering. We discuss the characteristic behavior of those phase transitions and the crystalline electric field state in Sm T 4 P 12 ( T =Fe, Ru and Os). Interestingly, the magnetic entropy of SmFe 4 P 12 have only 0.16 R ln 2 below the ferromagnetic ordering temperature. This suggests a strong spin fluctuation effect. On the other hand, the variation of magnetic entropy in SmRu 4 P 12 and SmOs 4 P 12 reaches to nearly R ln 4 below the ordering temperature.

Magnetic properties and phase diagram of Ce(Ru1-xRhx)2Si2 (0≤x≤0.5)

Magnetic susceptibility, magnetization and specific heat measurements have been performed on single crystalline Ce(Ru 1- x Rh x ) 2 Si 2 in the Ru rich region(0≤ x 5 T). The AF ordering is destroyed above H C and the system further undergoes a metamagnetic transition at H M .

Evidence for magnetic ordering associated with metal-insulator transition in SmRu4P12 studied by muon spin relaxation

Muon spin relaxation measurements on the filled skutterudite compound

Charge-density-wave ordering in the metal-insulator transition compound PrRu4P12

\mathrm{Sm}{\mathrm{Ru}}_{4}{\mathrm{P}}_{12}

Systematic Study of Lattice Specific Heat of Filled Skutterudites

have been carried out in zero and longitudinal fields. The temperature dependence of both the initial asymmetry and the muon spin depolarization rate shows the appearance of a magnetically ordered state below the metal-insulator transition temperature

XANES STUDY OF RARE-EARTH VALENCY IN LRU4P12 (L=CE AND PR)

{T}_{\mathrm{MI}}

Elastic Anomalies of Polycrystalline SmRu4P12 Associated with Metal–Insulator Transition

. The present study indicates that the ordering below

A Possible Novel Magnetic Ordering in SmRu4P12

{T}_{\mathrm{MI}}

Spin Dynamics at Very Low Temperature in Spin Ice Dy2Ti2O7

is not a nonmagnetic antiferroquadrupolar ordering but a magnetic one, which supports a scenario that magnetic octupolar ordering occurs below