Relation between disaccomodation and magnetic properties of manganese-ferrous ferrite

✍ Scribed by U. Enz

• Publisher: Elsevier Science
• Year: 1958
• Weight: 790 KB
• Volume: 24
• Category: Article
• ISSN: 0031-8914
• DOI: 10.1016/s0031-8914(58)80075-0

✦ Synopsis

Initial permeability, crystalline anisotropy and magnetostriction have been measured on a single crystal of manganese-ferrous ferrite. The initial permeability shows a high disaccomodation, i.e. a decrease with time. This decrease can be as high as 95~o of the value immediately after demagnetisation. Disaccomodation is a timedependent blocking of domain walls, the cause of which is supposed to be a transition of electrons between different ions. The blocked walls cause constricted minor hyseresis loops which indeed have been found. Manganese-ferrous ferrites have in general an extra peak of the permeability as a function of temperature not understood up till now. I t is shown that this is an effect of disaccomodation.