Figure 2: Spin ice signatures.
Magnetic properties of Dy2Ti2O7∥Y2Ti2O7. (a) Magnetization curves at 1.85 K along two principal axes [001] and 
. Colour code: xDTO∥YTO(110) x=60 (blue), x=40 (red), x=20 (green), x=5 (orange). Full and open circles correspond to the two orientations. Dashed lines show the expected saturated moments for the two-in, two-out spin configuration for each direction. (b) Temperature dependence of the dc susceptibility. Data are shown as the dimensionless quantity χT/C versus temperature, from ref. 33. Comparison between a bulk Dy2Ti2O7 spherical crystal (black) and 60DTO∥YTO(110) (blue). The purple line is the calculated9,33 quantity for Dy2Ti2O7. The inset shows the reciprocal susceptibility as a function of temperature for the same samples. The line is the best fit to an apparent Curie–Weiss law χ=C′/(T−θ) with a Curie constant C′=4.25(5) K and θ=1.1(1) K.
