Magnetic Properties of Mn-based Heusler alloy films with Ru doping.

摘要

Here we report a series of Mn-based Heusler alloy films with Ru doping grown on MgO substrate with Cr buffer layer using co-sputtering method from Ru and a series of Mn_xGe (x = 2, 2.2, 2.4, 2.5) targets. All the films were deposited at room temperature and annealed at 700 K. X-ray diffraction measurements were carried out using Singapore Synchrotron Light Source (SSLS). The magnetizations of the films were measured at room temperature using VSM. The results indicate that both residual magnetization (Mr) and saturation magnetization (MS) increase with Ru concentration increasing, while the coercivity (HC) becomes smaller. Our attempts provide alternative candidates for the Heusler alloys-based spintronic applications.