Magnetic field generator useful for a magnetic resonance imaging

Details Magnetic field generator useful for a magnetic resonance imaging Magnetic field generator useful for a magnetic resonance imaging

1987-07-14

1989-05-02

Salce, Patrick R.

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Magnet structure or material

148302, 310 44, 324309, H01F 124, C04B 3532

Patent

active

048272353

ABSTRACT:
A magnetic field generator comprises a permanent magnet, and pole pieces magnetically connected to the permanent magnet. The pole pieces are disposed to face each other to generate a magnetic field between them, and have a specific resistance of 20 .mu..OMEGA.-cm or more. The permanent magnet comprises a sintered alloy including iron as a main component, a rare earth element including yttrium, cobalt, and boron. The permanent magnet includes, as its main part, a strong magnetic Fe-rich phase of a tetragonal system, as well as a non-magnetic Laves phase, and preferably has a maximum energy product of 38 MGOe or more.

REFERENCES:
patent: 4308474 (1981-12-01), Savage et al.
patent: 4656449 (1987-04-01), Mallard et al.
patent: 4696725 (1987-09-01), Ochiai et al.

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