Systems And Methods For Making Radially Anisotropic Thin-Film Magnetic Torroidal Cores, And Radially Anisotropic Cores Having Radial Anisotropy, And Inductors Having Radially Anisotropic Cores

Apparatus for fabricating a core having radial anisotropy comprising:

• a magnetic orientation fixture comprising at least a first magnet for providing a radial magnetic field extending from an axial spindle to a surrounding second magnetic element, the axial spindle and the surrounding second magnetic element defining a location for placement of cores therebetween;
• and
• deposition apparatus configured for deposition of films of ferromagnetic material;
• wherein the magnetic orientation fixture is configured for placement in a deposition chamber of the deposition apparatus.

A method of fabricating a core having a radial aniosotropy, the method comprising

• Fabricating a core of anisotropic material;
• Providing a fixture comprising a first magnet for providing a radial magnetic field extending from an axial spindle of the fixture to a surrounding second magnetic element, a magnetic field extending from the axial spindle to the second magnetic element;
• placing the core in a region subject to magnetic fields extending from the spindle to the second magnetic element;
• and
• heating the core above a transition temperature of the core to cause the anisotropic magnetic material of the core to become radially anisotropic.

A method of fabricating a core having a radial aniosotropy, the method comprising

• Providing a fixture comprising a first magnet for providing a radial magnetic field extending from an axial magnetic element of the fixture to a surrounding second magnetic element;
• The fixture further comprising at least a second magnet for providing a radial magnetic field extending from a third magnetic element to a surrounding fourth magnetic element;
• placing a substrate in a region subject to magnetic fields extending from the first and third magnetic elements to the second and fourth magnetic elements;
• and
• electroplating core magnetic material onto the substrate to form a radially anisotropic core.