Measurement of rotational magnetic properties of nanocrystalline alloys by a modified B-H sensor

作者：Chen, Long; Wang, Youhua^*; Zhao, Zhenghan; Zhao, Hanyu; Liu, Chengcheng

来源：AIP Advances, 2017, 7(5): 056614.

DOI：10.1063/1.4973595

Nanocrystalline alloys are now widely used in high frequency electromagnetic applications such as high frequency transformers and chokes, while it's two-dimensional properties are seldom investigated. The nanocrystalline sample can be extremely brittle after annealed and crystallized which is very difficult to measure the properties by traditional method in 2D cases. The magnetic properties of nanocrystalline alloys under rotating field are measured and discussed in this paper. By combining the needle probe technique and the H-coil method, the magnetic flux density B and the magnetic field strength H in the sample can be measured. Finally, the modified B-H sensor is calibrated by the Helmholtz coils and the sensitivity of measuring B and H can achieve 4.3 mV/T and 30 mu V/A/m respectively.

• 出版日期2017-5
• 单位河北工业大学