Rapid Suppression of Phase IV by Nd Doping in Ce_<0.7>La_<0.3>B_6(Condensed matter : electronic structure and electrical, magnetic, and optical properties)

概要

論文の詳細を見る
We have studied the effect of Nd doping on phase IV of Ce_<0.7>Nd_yLa_<0.3-y>B_6 (y=0.005, 0.01, 0.03, and 0.05) to obtain information on the order parameter in phase IV. Phase IV is rapidly suppressed and phase III is stabilized by the Nd doping. Phase IV disappears at the critical concentration y_c〜0.015 above which only phase III exists below 1.4K. The macroscopic properties in phase IV are not affected by the Nd doping. For y=0.01, there exists a region where phases III and IV coexist at a low magnetic field. This mixed state is unstable and is easily changed to phase III by applying the magnetic field. This indicates that phases III and IV are competitive and phase IV is not the magnetic dipole ordered phase. The long-range ordering temperatures from phase IV or III to the paramagnetic region are constant at least up to y=0.05. This suggests the existence of some relationship between phases III and IV.
社団法人日本物理学会の論文
2007-10-15