Abstract
This paper presents a 2.5×2.5mm sized two-dimensional vector magnetic sensor (V-H sensor). The V-H sensor consists of B-needle probes for measurements of localized magnetic flux density vector B and a double H-coil for measurements of magnetic field strength vector H. The H-coil is made in very small size and the outside dimension is 2mm×2mm and the distance between B-needles is 2.5mm. In this paper, accuracy of the B-needle probe and frequency characteristic of the H-coil are evaluated and detailed two-dimensional vector magnetic properties in a magnetic circuit model made of a grain-oriented electric steel sheet are measured with the developed V-H sensor and results are compared with the crystal grain structure.
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