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首页> 外文期刊>Journal of Basic and Applied Physics >Numerical Study of Nanoscaled Granular Giant Magnetoresistance Sensors for the Limit Case of Dipolar Coupled Nanoparticles
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Numerical Study of Nanoscaled Granular Giant Magnetoresistance Sensors for the Limit Case of Dipolar Coupled Nanoparticles

机译：偶极耦合纳米粒子极限情况的纳米尺度巨磁阻传感器数值研究

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摘要

Assemblies of highly ordered magnetic nanoparticles dominated by dipolar particle coupling are analyzed in respect to their capability to act as a magnetic field sensor. We demonstrate a wide range of possibilities to tailor the response properties of the sensor to specific demands by either modification of the nanocomponents or the structure as a whole. Additionally, we find that increased detection sensitivity may be bought at the cost of an inherent noise signal. This behavior is contributed to the existence of four distinct operation modes each governed by a different energy contribution within the assembly.
机译：就偶极粒子耦合占主导的高度有序的磁性纳米粒子的集合，就其充当磁场传感器的能力进行了分析。我们展示了通过修饰纳米组件或整体结构来使传感器的响应特性适应特定要求的多种可能性。另外，我们发现可以以固有的噪声信号为代价购买更高的检测灵敏度。此行为导致存在四个不同的操作模式，每个操作模式都由组件内的不同能量贡献支配。

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