Wide Temperature Magnetic Field. Yig Probe High-precision Automatic Test Technology Research

This paper proposes a novel method for magnetic-field measurement by using the identity of the high level linearity identity of YIG resonant frequency and bias magnetic field, that is can be widely used in the field of measure the permanent magnetic by high-precisionBase on the principle of ferromagnetic resonance,comparing the monomorph YIG resonance with the pleomorphic YIG resonance in resonant electrocircuit of band-pass and band-stop.The pleomorphic YIG ball have the principle of isotrope ,easy to manufacture and jarless resonant frequency. Resonant electrocircuit of band-stop is better to be made and reduce the size.So we decied to manufacture the system by using the pleomorphic YIG ball as resonance and the resonant electrocircuit of band-stop.On the base of the research in the pleomorphic YIG resonance,we make sure of the project by using the one level YIG banb-stop resonance as the transducer of magnetic field. According to the project, we have developed a test system consist of high-precision and wide operating temperature magnetic test sensor, vector network analyzer, digital multi-meter, controlled translation stage, temperature sensor and so on. The excellent specification of this test system is: measurement range:600Gs~5000Gs, operating temperature range:-55~125℃, and test accuracy range :0.1%.This test system can be widely used in the filed of electro vacuum magnet ring and magnetic system magnetic-field measurement under wide operating temperature in real time, and can be used in the other magnetic materials and systems too.