Magnets for magnetic resonance applications
AssigneeElegant Mathematics LLC
InventorsOlena Ibragimova, Ilgiz Ibragimov
Life of this patent
Estimating the term…
Abstract
The invention pertains to advances in constructing predetermined magnets from appropriate magnetic material that allows for focusing the magnetic field in a target region.
Claims14
A method of manufacturing a permanent magnet of an anisotropic magnetic material, the method comprising:
- determining a multitude of finite elements such that the finite elements cover a volume of the magnet and each finite element corresponds to a uniform portion of a non-uniform magnetic field;
- providing at least one structural element defining the volume of the magnet;
- providing at least one external magnetic field source located in proximity to the structural elements or incorporated into structural elements configured to form the non-uniform magnetic field of the magnet;
- introducing the anisotropic magnetic material into said volume of the magnet;
- molding or casting the magnet;
- and
- performing magnetization of the anisotropic magnetic material by application of the magnetic field sources during molding or casting,
- wherein the anisotropic magnetic material having non-uniform magnetization forms a permanent magnetic field on at least one point outside the magnet with strength greater than that maximally achievable on a surface of an infinitely large bulk of the same magnetic material with linear anisotropic magnetization.
A permanent magnet of an anisotropic magnetic material comprising:
- a first component including Co—Fe or Sm—Co crystals;
- a second component including Bi-containing crystals or Mn—Al crystals;
- and
- at least one low-melting component forming at least one compound with the second component,
- wherein
- the anisotropic magnetic material having non-uniform magnetization forms a permanent magnetic field on at least one point outside the magnet with strength greater than that maximally achievable on a surface of an infinitely large bulk of the same magnetic material with anisotropic magnetization.
A permanent magnet of an anisotropic magnetic material, wherein the anisotropic magnetic material having non-uniform magnetization forms a permanent magnetic field on at least one point outside the magnet with strength greater than that maximally achievable on a surface of an infinitely large bulk of the same magnetic material with linear anisotropic magnetization.
Dependencies are inferred from the claim text.