Ferromagnetic materials
US5382304A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 1992 |
| Grant date | Jan 17, 1995 |
| Priority date | — |
| Expiry date | Oct 19, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F1/0311
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This invention provides a ferromagnetic material Fe.sub.60 M.sub.x N.sub.y where M is at least one element selected from Al, Ga, In and Tl, N is at least one element selected from P, As, Sb and Bi, x has a range of 1.ltoreq..times..ltoreq.39 and x+y=40 and excluding Fe.sub.60 Ga.sub.X AS.sub.y. A preferred ferromagnetic material is Fe.sub.60 Ga.sub.x As.sub.y , preferably when x has a range of 3.ltoreq..times..ltoreq.37, more preferably when x has a range of 20.ltoreq..times..ltoreq.37, and even more preferably when x has a range of 30.ltoreq..times..ltoreq.37. Typically, ferromagnetic materials of this type can be homogenised by annealing or melt spinning. Melt spun Fe.sub.60 Ga.sub.x As.sub.y can show Curie Temperatures (T.sub.c) of about 470.degree. C. and saturation magnestions of about 89 emu/g. Typically a ferromagentic material of the Fe.sub.60 M.sub.x N.sub.y has a B8.sub.2 type structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.