| Автор | W P Osmond |
| Дата выпуска | 1954-12-01 |
| dc.description | A gaussian distribution function for the variation of the axial ratio m of powder particles is suggested as the explanation for the measured values of the coercivity of γ-ferric oxide powders being less than the theoretical values for particles of the observed mean shape factor m. Superposition of the theoretical hysteresis loops for 20 packets of equal volume, each assumed to consist of particles with one value only of m, approximating to such a distribution gives values of bulk coercivity in very close agreement with measured values for two particular examples of widely different mean shape factors. In the light of these results explanations are offered of some other observed values for this oxide, and it is suggested that this mechanism may account in part for results obtained by Weil some years ago for precipitated ferronickels. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | The Effect of Particle Shape Variations on the Coercivity of Iron Oxide Powders |
| Тип | paper |
| DOI | 10.1088/0370-1301/67/12/303 |
| Print ISSN | 0370-1301 |
| Журнал | Proceedings of the Physical Society. Section B |
| Том | 67 |
| Первая страница | 875 |
| Последняя страница | 882 |
| Аффилиация | W P Osmond; Magnetic Tapes Division, Minnesota Mining and Manufacturing Co. Ltd., Slough, Bucks |
| Выпуск | 12 |
