Crystal structure of . The trigonal prism are drawn in blue, the empty octahedra in green, the empty tetrahedra in red, Er atoms are medium gray, and the Cd atoms are black.
Magnetic susceptibility and inverse magnetic susceptibility for in . The lower inset shows the vs T of the 10 kOe measurement. The upper inset shows ZFC-FC measurement at 100 Oe.
Magnetization isotherms of measured at various temperatures around the ordering temperature.
Magnetization isotherms of measured at 3 K to highlight the metamagnetic transition. The left inset shows dM/dH vs H and the right inset shows the Arott’s plot in H/M vs style at to highlight the positive as well as the negative slope of H/M.
Temperature dependence of the magnetic-entropy change of for different magnetic-field changes. The dashed lines are for visual help. The inset shows the heat capacity measurement at zero magnetic field.
Negative magnetic-entropy change vs T and RCP vs T for and other best known intermetallic refrigerant materials with working temperatures between 5–30 K for (Refs. 26–28 and 37–47 ). The ellipsoid presents the values of the different members of the solid solution . In some cases the values were estimated out of plots, since no values were reported in text or tables. Therefore these values are afflicted with an error. The temperatures are not or , they are the temperatures were has the peak maximum.
Crystal data and structure refinement for , space group , .
Atomic coordinates and isotropic displacement parameters of . is defined as one third of the trace of the orthogonalized tensor.
Interatomic distances (pm) in , calculated with the powder lattice parameters. Standard deviations are all equal or smaller than 0.3 p.m. All distances within the first coordination spheres are listed.
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