Ferromagnetic Spinels with Rectangular Hysteresis Loops
- 1 February 1954
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 25 (2) , 176-178
- https://doi.org/10.1063/1.1721598
Abstract
The ferromagnetic spinel MgO·3MnFe2O4, ``magnesium manganese ferrite'' is satisfactory for magnetic memory devices. Small rings of about 55-mil diameter which have proved practical for memory matrix use have a coercive force of about 3 oersteds and switch-over time of 0.3 microsecond, and a nearly rectangular hysteresis loop. Rings of about 0.5-cm diameter which were used to study composition variables showed a lower coercive force of 1.6 oersteds for the same composition and processing. Resistivities are in the order of 45×103 ohm cm.This publication has 4 references indexed in Scilit:
- A Coincident-Current Magnetic Memory Cell for the Storage of Digital InformationProceedings of the IRE, 1952
- Digital Information Storage in Three Dimensions Using Magnetic CoresJournal of Applied Physics, 1951
- Static Magnetic Storage and Delay LineJournal of Applied Physics, 1950
- Propriétés magnétiques des ferrites ; ferrimagnétisme et antiferromagnétismeAnnales de Physique, 1948