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High magnetic properties of nanocomposite ribbons made with Mischmetals–Fe–Co–Ti–B alloys.
- Source :
- Journal of Applied Physics; Apr2009, Vol. 105 Issue 7, p07A704-07A704-3, 3p, 1 Black and White Photograph, 1 Chart, 3 Graphs
- Publication Year :
- 2009
-
Abstract
- Magnetic properties, phase constitution, and microstructure of melt spun R-lean and B-enriched Mischmetal (MM)–Fe–Co–Ti–B nanocomposites have been investigated. The thermal magnetic analysis show that only 2:14:1 and α-Fe [α-(Fe,Co)] phases appear for MM(A)<subscript>9.5</subscript>Fe<subscript>78.5</subscript>Ti<subscript>2</subscript>B<subscript>10</subscript> and MM(A)<subscript>9</subscript>Fe<subscript>79.5</subscript>Co<subscript>2.5</subscript>Ti<subscript>1</subscript>B<subscript>8</subscript> ribbons, while an additional Fe<subscript>3</subscript>B phase is present for R<subscript>9.25</subscript>Fe<subscript>79.25</subscript>Co<subscript>2.5</subscript>Ti<subscript>1</subscript>B<subscript>8</subscript> [R=MM(A), MM(B), and MM(C)] ribbons. The magnetic properties of the above nanocomposites are determined not only by the phase constitution of MM–Fe–Co–Ti–B nanocomposites but also by the composition of MMs. Besides, fine grain size of 15–40 nm is almost unchanged for the ribbons with various MMs, giving rise to the strong exchange coupling effect between magnetic grains and the improved magnetic performance. In this study, the optimum magnetic properties of B<subscript>r</subscript>=9.6 kG, <subscript>i</subscript>H<subscript>c</subscript>=8.6 kOe, and (BH)<subscript>max</subscript>=18.2 MG Oe can be achieved for MM(B)<subscript>9.25</subscript>Fe<subscript>79.25</subscript>Co<subscript>2.5</subscript>Ti<subscript>1</subscript>B<subscript>8</subscript> nanocomposites. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 105
- Issue :
- 7
- Database :
- Complementary Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 37611062
- Full Text :
- https://doi.org/10.1063/1.3061993