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- Title
FeGaB 犉犲犌犪犅磁性薄膜中涡流损耗抑制方法的仿真.
- Authors
陈 锶; 高 杨; 任万春; 彭春瑞; 王 春
- Abstract
In the structure of bulk acoustic wave (BAW) magnetoelectric antenna,the induced current generated by the magnetic film in the magnetostrictive layer in the high frequency magnetic ield will cause eddy current loss, which in turn affects the radiation performance of the antenna. To analyze and suppress the eddy current loss of magnetic thin films,the eddy current loss model of FeGaB magnetic thin film s established by using the finite element simulation method. According to the skin effect of eddy current, the surface eddy current and internal eddy current are discussed. And eddy current suppression iscarriedout by inserting Al O3 thin film to isolate the current. Through the comparative analysis of three kinds of Al2〇3film separation methods, the optimal separation methods for the surface eddy current suppression and the internal eddy current suppression are obtained. Consider- mg the influence of the total eddy current, a cross separation method s proposed as the optimal separation method to suppress the eddy current loss. The emulation results show that the total eddy current loss can be suppressed more than 65% by using the proposed method to insert 10 nm Al2O3thin film into the FeGaB magnetic thin film.
- Subjects
EDDY current losses; MAGNETIC films; SKIN effect; FINITE element method; THIN films; MAGNETOELECTRONICS
- Publication
Piezoelectrics & Acoustooptics, 2020, Vol 42, Issue 3, p357
- ISSN
1004-2474
- Publication type
Article
- DOI
10.11977/j.issn.1004-2474.2020.03.017