Enhanced remanence in nanocomposite of Y 1-x Sm x Co 5 /Co ribbons obtained by melt-spinning

The synthesis of alloys with nominal composition for Y 1-x Sm x Co 5 by means of arc furnace and melt-spinning, is of critical scientific importance due that if replaced partially or completely the Samarium by the Yttrium is possible understand what contribution the earth element rare to the exchange interactions that guide to increased remnant magnetization in a nanocomposite. The alloys of Y 1-x Sm x Co 5 /Co obtained by melt-spun were characterized by x-ray diffraction with a compact hexagonal crystal structure the CaCu 5 type. The alloys for nanocomposites of Y 1-x Sm x Co 5 /Co ribbons show ferromagnetic behavior with good magnetic properties, order to demonstrate this the magnetic properties were measured using a pulsed field magnetometer applying a high magnetic field in order to obtain a saturated magnetization curve and a high coercivity of 0.69 MA/m and an enhanced remanence of σ r /σ sat ratio equal to 0.57 were determined.