Effects of Cr substitution on the formation, structure and magnetic properties of Sm{sub 2}(Fe,Cr){sub 17}C{sub x} alloys
- Univ. of Delaware, Newark, DE (United States). Dept. of Physics and Astronomy
The effects of Cr substitution on the formation, structure and magnetic properties of Sm{sub 2}(Fe,Cr){sub 17}C{sub x} alloys have been systematically studied on arc-melted and melt-spun samples using XRD, TEM and magnetic measurements. It has been found that Cr substitution is an effective way to form the Sm{sub 2}(Fe,Cr){sub 17}C{sub x} carbides. The minimum amount of Cr needed to form an almost single 2:17 structure is around x = 2. Magnetic measurements reveal that the Cr substituted Sm{sub 2}(Fe,Cr){sub 17}C{sub x} carbides have a strong uniaxial magnetocrystalline anisotropy with anisotropy fields higher than 90 kOe obtained in both the Sm{sub 2}Fe{sub 15}Cr{sub 2}C{sub 2} and Sm{sub 2}Fe{sub 14}Cr{sub 3}C{sub 2} carbides. The highest coercivity of 13.2 kOe has been obtained in Sm{sub 2}Fe{sub 15}Cr{sub 2}C{sub 2} melt-spun ribbons. However, both the Curie temperature and the magnetization are found to decrease with Cr substitution.
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG02-90ER45413
- OSTI ID:
- 566423
- Report Number(s):
- CONF-970468-; ISSN 0018-9464; TRN: IM9805%%123
- Journal Information:
- IEEE Transactions on Magnetics, Vol. 33, Issue 5Pt2; Conference: 1997 IEEE international magnetics conference (Intermag `97), New Orleans, LA (United States), 1-4 Apr 1997; Other Information: PBD: Sep 1997
- Country of Publication:
- United States
- Language:
- English
Similar Records
Microstructure and magnetic properties of rapidly quenched Sm{sub 2}(Fe,Al,Zr){sub 17}C{sub 1.5} ribbons with Zr additions
Isotropic nanocrystalline Sm(Fe,Co)11.3Ti0.7 magnets modified with B and Zr