Tailoring of the magnetic properties of SmCo{sub 5}:Nb{sub 0.33}Cr{sub 0.67} nanocomposites using mechanical alloying
- Univ. of Nebraska, Lincoln, NE (United States). Center for Materials Research and Analysis
Nanocomposite structures composed of ferromagnetic particles dispersed in a matrix are systems in which the magnetic properties can be tailored by varying the size and spacing of the ferromagnetic particles. Nanocomposites of SmCo{sub 5} in a non-magnetic Nb{sub 0.33}Cr{sub 0.67} matrix exhibit a wide variety of magnetic properties. SmCo{sub 5} powder is premilled prior to mechanical alloying. The premilling results in a maximum coercivity of 16 kOe after 2 hours of milling, and an enhanced remanence ratio. Both features may be due to exchange anisotropy and/or exchange coupling between hard and soft ferromagnetic phases. The nanocomposite samples show that, when the SmCo{sub 5} particulates are small enough, the primary effect of alloying is to disperse them throughout the matrix with no further refinement of size.
- OSTI ID:
- 186960
- Report Number(s):
- CONF-950404-; ISSN 0018-9464; TRN: IM9609%%233
- Journal Information:
- IEEE Transactions on Magnetics, Vol. 31, Issue 6Pt2; Conference: Conference on magnetism and magnetic materials, San Antonio, TX (United States), 18-21 Apr 1995; Other Information: PBD: Nov 1995
- Country of Publication:
- United States
- Language:
- English
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