Ferromagnetic resonance temperature measurement method based on field sweeping method
A ferromagnetic resonance and ferromagnetic technology is applied to thermometers, thermometers, and measuring devices that use directly heat-sensitive electric/magnetic elements, which can solve the problem of long measurement time, complex temperature measurement models, and increased measurement and processing complexity. and other problems, to achieve the effect of simple measurement method, high measurement accuracy, fast and easy measurement
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[0045] In order to verify the feasibility of the above-mentioned ferromagnetic resonance temperature measurement method based on the sweeping field method, the inventor designed a simulation experiment according to the content of the invention to repeatedly verify the method. A specific example is used to illustrate:
[0046] Add the solution of ferromagnetic nanoparticles into the measured object, put the measured object into the static magnetic field, and perform saturation magnetization on the ferromagnetic nanoparticles;
[0047] A certain amplitude of magnetic induction intensity μ is generated by a microwave source 0 h 1 =10 -4 T microwave pulse excitation, control its frequency f 0 =197GHz, pulse width T p Controlled at 1.5ps, through the microwave circulator, in the direction perpendicular to the static magnetic field, microwave pulse excitation is applied, at f 0 Under the same conditions, change the magnetic field strength H of the static magnetic field 0 The si...
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