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The 23 to 300 c demagnetization resistance of samarium-cobalt permanent magnets
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Overton, Eric Niedra, Janis M. |
| Copyright Year | 1991 |
| Description | The influence of temperature on knee point and squareness of the M-H demagnetization characteristic of permanent magnets is important information for the full utilization of the capabilities of samarium-cobalt magnets at high temperature in demagnetization resistent permanent magnet devices. Composite plots of the knee field and the demagnetizing field required to produce a given magnetic induction swing below remanence were obtained for several commercial Sm2Co17 type magnet samples in the temperature range of 23 to 300 C. Using the knee point to define the limits of operation safe against irreversible demagnetization, such plots are shown to provide an effective overview of the useable regions in the space of temperature-induction swing parameters. The observed second quadrant M-H characteristic squareness is shown, by two measures, to increase gradually with temperature, reaching a peak in the interval 200 to 300 C. |
| File Size | 524311 |
| Page Count | 14 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19920002034 |
| Archival Resource Key | ark:/13960/t77t2m74f |
| Language | English |
| Publisher Date | 1991-11-01 |
| Access Restriction | Open |
| Subject Keyword | Electronics And Electrical Engineering Magnetic Induction Quadrants Temperature Effects Permanent Magnets Samarium High Temperature Cobalt Demagnetization Remanence Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
