Title :
Magnetic behaviour of the rare earth binary R-Fe alloys
Author :
Cabrel, F.A.O. ; Turtelli, R.S. ; Gama, S. ; Machado, F.L.A.
Author_Institution :
Dept. de Fisica, Univ. Federal do Rio Grande do Norte, Natal, Brazil
fDate :
9/1/1989 12:00:00 AM
Abstract :
Thermomagnetic analysis and Hc measurements in rare-earth-rich alloys of the systems Fe-Ce, Fe-Pr, and FeNd indicate the presence of two different hard magnetic phases. These phases can be metastable, and their magnetic properties are strongly affected by heat treatments at 600°C. One of them is encountered preferentially in the as-cast alloys; the other appears after 600°C heat treatments of two hours or more. For the Fe-Pr system the first phase has T c=222°C, and the alloys in which it is detected present Hc´s around 4.0 kOe. The second phase has T c=236°C, and the alloys containing it present lower H c´s whose value is dependent on the duration of the heat treatments
Keywords :
cerium alloys; coercive force; ferromagnetic properties of substances; iron alloys; neodymium alloys; praseodymium alloys; 2 h; 222 C; 236 C; 600 C; Fe-Ce; Fe-Pr; FeNd; as-cast alloys; hard magnetic phases; heat treatments; magnetic behaviour; magnetic properties; rare-earth-rich alloys; thermomagnetic analysis; Amorphous magnetic materials; Argon; Atmosphere; Atmospheric measurements; Coercive force; Coils; Magnetic analysis; Magnetic field measurement; Magnetic properties; Temperature;
Journal_Title :
Magnetics, IEEE Transactions on
