Tuesday, October 23, 2012

1210.5536 (Xiao Lin et al.)

Anisotropic magnetization and resistivity of single crystalline
RNi1-xBi2+-y (R = La-Nd, Sm, Gd-Dy)
   [PDF]

Xiao Lin, Warren E. Straszheim, Sergey L. Bud'ko, Paul C. Canfield
We present a detailed study of RNi1-xBi2+-y (R = La-Nd, Sm, Gd-Dy) single crystals by measurements of stoichiometry and temperature dependent magnetic susceptibility, magnetization, and electrical resistivity. This series forms with partial Ni occupancy as well as a variable Bi occupancy. For R = Ce-Nd, Sm, Gd-Dy, the RNi1-xBi2+-y compounds show local-moment like behavior and order antiferromagnetically at low temperatures. Determination of anisotropies as well as antiferromagnetic ordering temperatures for RNi1-xBi2+-y (R = Ce-Nd, Sm, Gd-Dy) have been made. Although crystalline samples from this family exhibit minority, second phase superconductivity at low temperatures associated with Ni-Bi and Bi contamination, no evidence of bulk superconductivity has been observed.
View original: http://arxiv.org/abs/1210.5536

No comments:

Post a Comment