Magnetic property measurement system mpms 3

Powder x-ray diffraction was performed at room temperature using a PANalytical x-ray diffractometer (model EMPYREAN) with monochromatic Cu $K_{\alpha 1}$ radiation. The DC magnetic properties of the polycrystals were conducted by using a Quantum Design magnetic property measurement system (MPMS-3). The electrical resistivity was measured on sintered pellets by a Quantum Design physical property measurement system (PPMS).

Transport and specific heat were measured by a conventional four-probe method and a relaxation method, respectively, in a Physical Property Measurement System equipped with a rotator and ³He insert (Quantum Design). In the transport measurements Au wires were attached to the sample with Ag paste (DuPont 4922 N). The typical dimensions were 1.2 mm $\times$ 0.5 mm $\times$ 0.1 mm (shown in the inset of Fig. 2), which enable us to thoroughly measure the transport properties for both longitudinal and transverse configurations. The magnetic field dependence of resistivity (Hall resistivity) is obtained after the symmetrization (antisymmetrization) with respect to the positive and negative field. Magnetization was measured with a Magnetic Property Measurement System MPMS3, equipped with a ³He insert (Quantum Design).