Abstract
A large number of measured demagnetizing factors for fluxgate ring cores of a wide range of cross section shapes have been compiled from the literature and plotted against the core cross-sectional area over the squared mean core diameter. The points group close to a straight line through the origin. The local demagnetizing factor is used, and the conversion to the average or global factor is derived. Three approximate analytical/numerical calculations of the internal field in the ring-core magnetic material are made. The results are close to the experimental data, supporting the conclusion that the demagnetizing factor for thin rings is proportional to the ring cross-sectional area divided by the diameter squared.
| Original language | English |
|---|---|
| Journal | Measurement Science and Technology |
| Volume | 13 |
| Issue number | 8 |
| Pages (from-to) | 1248-1258 |
| ISSN | 0957-0233 |
| Publication status | Published - 2002 |
Keywords
- fluxgate magnetometer
- vector magnetic field
- magnetic field monitoring