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相关概念视频

Potentiometer01:30

Potentiometer

Voltage and current measurements using a standard voltmeter and ammeter alter the circuit being measured either by drawing or resisting the current flow, which introduces uncertainties in the measurements. Null measurements balance the voltages so that no current flows through the measuring device and, therefore, no alterations occur in the measured circuit.
Suppose the emf of a battery needs to be measured. If the battery is directly connected to a standard voltmeter, the measured quantity is...

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相关实验视频

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Development of Whispering Gallery Mode Polymeric Micro-optical Electric Field Sensors
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中等动态场范围线性双极旋转传感器通过软定传感层传感层.

Tejaswini C Gawade1,2, Umesh P Borole1, Bhagaban Behera1

  • 1Nanomaterials Research Laboratory, Surface Engineering Division, CSIR-National Aerospace Laboratories, Bangalore 560 017, India.

Journal of physics. Condensed matter : an Institute of Physics journal
|July 8, 2024
PubMed
概括

这项研究介绍了一种使用旋-GMR技术的新型磁传感器. 增强的传感器设计在广泛的温度范围内提供可靠的性能,适合各种测量应用.

关键词:
在PtMnn中反铁磁材料是一种反铁磁材料.磁性多层磁性多层磁性磁传感器是一种磁传感器.软偏见是一种软的偏见.旋转的旋转可以

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Sensitivity Enhancement of Soft Capacitive Pressure Sensors Using a Solvent Evaporation-Based Porosity Control Technique
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相关实验视频

Last Updated: Jul 10, 2026

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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:

  • 巨型磁阻 (GMR) 旋转传感器对于位置和电流传感等应用至关重要.
  • 优化GMR传感器的磁性和热稳定性对于可靠的性能至关重要.
  • 控制旋转结构中的偏差场是实现所需传感器特性的关键.

研究的目的:

  • 设计和制造一个使用旋-GMR技术的磁传感器,具有中等动态范围.
  • 通过将传感层 (SL) 修改为软钉层 (SPL) 来提高传感器性能.
  • 通过实验验证控制偏差场的数值模拟,并评估传感器的操作特性.

主要方法:

  • 通过交换偏差场引入软钉层 (SPL) 来修改旋转堆.
  • 使用一个具有较低阻塞温度的抗铁磁层,与钉钉层相邻.
  • 使用在SPL和SL之间使用非磁Ru间隔层进行数值模拟,然后进行实验验证.

主要成果:

  • 制造一个磁传感器,其线性工作场范围大约为±100 Oe.
  • 获得了大约0.1 mV V-1Oe-1的近零场的灵敏度.
  • 在-40°C至125°C的温度范围内具有经过证明的运行能力,电压的热系数约为15μV V-1°C-1.

结论:

  • 修改后的旋-GMR传感器具有适合各种应用的中等动态范围.
  • 实施的软钉层策略有效地控制了偏差场,并提高了传感器性能.
  • 传感器表现出强大的热性能,使其适用于广泛的操作温度.