Letter | Published:

Gyromagnetic Resonance in Ferrites

Nature volume 160, page 90 (19 July 1947) | Download Citation



Magnetic ferrites of great homogeneity have been prepared in this Laboratory. In these ferrites the tangent of the loss angle between B and H is found to rise at a certain frequency fairly suddenly from values less than 1 per cent to values much exceeding unity. The permeability at the same time goes down to very low values, which shows that not only the boundary displacements but also rotation of domains as a whole are affected at these frequencies. behaviour of the complex susceptibility Xc = X′ − iX″ (see graph) suggests a phenomenon of resonance.

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    , and , Phys. Z. Sovj. Union, 8, 153 (1935).

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  1. Natuurkundig Laboratorium der N.V. Philips' Gloeilampenfabrieken, Eindhoven. March 5.

    • J. L. SNOEK


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