Title :
Enhanced Coercivity in Melt-Spun Sm(Co, Fe, Cu)5 Ribbons by Low Temperature Aging
Author :
Sultana, D. ; Marinescu, M. ; Zhang, Y. ; Hadjipanayis, G.C.
Author_Institution :
Delaware Univ., Newark
Abstract :
The authors studied the influence of microstructure and grain size, as well as Curie temperature, on the low-temperature aged Sm(Co0.45Cu0.4Fe0.15)5 alloy in relation to enhanced coercivity. Melt-spinning has been employed in order to achieved a wide range of grain sizes from micro- to nanometer level. XRD and TEM analysis were used to study the structure of as-spun ribbons and SQUID magnetometer was used to determine the magnetic hysteresis parameters. Results showed that the enhanced coercivity of aged ribbons is higher than that one obtained in 1:5 microstructure aged magnets prior to the changes in Curie temperature.
Keywords :
Curie temperature; X-ray diffraction; ageing; cobalt alloys; coercive force; copper alloys; grain size; iron alloys; magnetic hysteresis; magnets; melt spinning; samarium alloys; transmission electron microscopy; Curie temperature; SQUID magnetometer; SmCo0.45Cu0.4Fe0.15; TEM; X-ray diffraction; XRD; aging; coercivity; grain size; magnetic hysteresis; magnets; melt-spinning; melt-spun ribbons; microstructure; transmission electron microscopy; Aging; Coercive force; Copper alloys; Grain size; Iron alloys; Magnetic analysis; Microstructure; SQUID magnetometers; Temperature; X-ray scattering;
Conference_Titel :
Magnetics Conference, 2006. INTERMAG 2006. IEEE International
Conference_Location :
San Diego, CA
Print_ISBN :
1-4244-1479-2
DOI :
10.1109/INTMAG.2006.374950
