Machine for testing planar magnetic film with magnetic bubbles
AssigneeCommissariat a l'Energie Atomique
InventorsDaniel Mauduit, Georges Sauron
Life of this patent
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Abstract
Machine for testing planar magnetic film with magnetic bubbles and which comprises a testing device and a magnetic head, wherein the magnetic head incorporates two polarization coils in the Helmholtz position and whereof the common axis is normal to the plane of the magnetic film and two flat coils whose axes are perpendicular to one another and parallel to the plane of the magnetic film, the first of the polarization coils being arranged within the flat coils which are themselves arranged one within the other and on the same side of the magnetic film, while the test device and the second polarization coil are arranged on the other side of the magnetic film.
Claims9
A machine for testing planar magnetic film with magnetic bubbles, said machine comprising support means carrying a testing device and a magnetic head, wherein the magnetic head incorporates two polarization coils and two flat coils, said polarization coils being in the Helmholtz position and having a common axis normal to the plane of the magnetic film, the axes of said flat coils being perpendicular to one another and parallel to the plane of the magnetic film, a first of the polarization coils being arranged within the flat coils which are themselves arranged one within the other and on the same side of the magnetic film, whilst the testing device and the second polarization coil are arranged on the other side of the magnetic film.
Dependencies are inferred from the claim text.