Patent ID: 7449883

Claim:
A method for measuring variation of magnetic induction of a magnetic material with respect to temperature, comprising the steps of: in a magnetic resonance system that generates a magnetic field, providing a probe at an arbitrary point A within an effective range of said magnetic field and measuring magnetic resonance signals at said point A, and from the measured magnetic resonance signals automatically electronically calculating a background magnetic induction B 0 ; providing a magnetic material to be tested at said point A, and operating a temperature control unit of the magnetic resonance system to control heating of said magnetic material to be tested, and detecting a temperature of said magnetic material with a temperature sensor while measuring magnetic resonance signals with said probe, and automatically electronically calculating, from said temperature and said magnetic resonance signals, a magnetic induction of said magnetic material at said point A at respectively different temperatures; and for each measurement of magnetic induction at each of said respectively different temperatures, subtracting said background magnetic induction B 0 from the magnetic induction measured for said magnetic material to obtain a plurality of subtraction results, and combining said subtraction results to obtain a characteristic curve representing variation of the magnetic induction fo the magnetic material with respect to temperature.