平面大厅效应磁传感器具有延长场域范围的磁场传感器
Daniel Lahav1, Moty Schultz1, Shai Amrusi2
1Department of Physics, Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan 52900, Israel.
Sensors (Basel, Switzerland)
|July 13, 2024
概括
研究人员增强了圆平面霍尔效应 (EPHE) 传感器,使其在更大的磁场中运行,同时保持低噪音. 这种扩展扩大了它们在敏感磁场检测中的应用潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 凝聚物质物理学 凝聚物质物理学
- 电气工程 电气工程
背景情况:
- 圆平面的霍尔效应 (EPHE) 传感器提供了卓越的等效磁噪声 (EMN) 性能 (pT/Hz).
- 目前的EPHE传感器仅限于微米特斯拉 (mT) 的磁场范围,限制了它们的实际应用.
- 扩大操作磁场范围对于更广泛的传感器部署至关重要.
研究的目的:
- 制造和描述具有增强磁场操作范围的EPHE传感器.
- 研究EPHE传感器中磁性异构和EMN之间的关系.
- 评估这些增强型传感器在各种应用中的潜力.
主要方法:
- EPHE传感器的制造具有定制的单轴形状诱导的异构性.
- 测量10 Hz的等效磁噪声 (EMN) 在不同的磁异性 (12 Oe到120 Oe).
- 传感器行为特征,包括歇斯底里和磁域特征.
主要成果:
- EPHE传感器成功地制造出具有从12 Oe到120 Oe的磁性异构性.
- 10 Hz的EMN从800 pT/Hz变化到56 nT/Hz,随着异性变异的增加.
- 传感器展示了单个磁域的行为,具有微不足道的hysteresis.
结论:
- 增加单轴形状诱导的异构性有效地扩大了EPHE传感器的操作磁场范围.
- 带有增强场范围的EPHE传感器在需要在更广泛的磁场频谱中进行敏感检测的应用中表现有前途.
- 这些发现为开发更通用的磁传感器铺平了道路.
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