One-Dimensional Magnonic Crystal for Magnetic Field Sensing
One-Dimensional Magnonic Crystal for Magnetic Field Sensing
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DOI：
10.1007/s10948-015-3006-9
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发表时间：
2015-02
影响因子：
1.8
通讯作者：
S. Atalay;A. Kaya;V. S. Kolat;H. Gençer;T. Izgi
中科院分区：
文献类型：
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作者：
S. Atalay;A. Kaya;V. S. Kolat;H. Gençer;T. Izgi
研究了一维磁振子晶体的磁场传感能力。YIG薄膜的表面被周期性的Cu条纹和磁体阵列进行了一维调制。由于静磁表面波（MSSW）通过磁性材料的表面传播，YIG薄膜的表面调制形成尖锐的带隙。研究发现，磁场的微小变化会导致带隙频率峰值的较大变化。在磁场中的1-Oe的变化引起近2.7和2.6 MHz的移动的带隙频率的磁振子晶体调制的周期性铜条和磁铁阵列，分别，这意味着一个非常低的磁场变化可以被检测到。带隙频率的这种大的偏移使得这些一维磁振子晶体成为磁场感测的有吸引力的候选者。
Magnetic field sensor capacity of one-dimensional magnonic crystals was investigated. The surface of YIG film was modulated by periodic Cu stripes and magnet array in one dimension. The surface modulations of YIG film form sharp band gaps, since magnetostatic surface wave (MSSW) propagates through the surface of a magnetic material. It was found that a very small magnetic field change leads to a large change in the peak value of band gap frequency. A 1-Oe change in the field caused nearly 2.7 and 2.6 MHz shift in the band gap frequency for magnonic crystals modulated by periodic Cu stripes and magnet array, respectively, which means that a very low magnetic field change could be detected. Such a large shift in the band gap frequency makes these one-dimensional magnonic crystals attractive candidates for magnetic field sensing.