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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Micromechanical instruments for ferromagnetic measurements [Review]
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Micromechanical instruments for ferromagnetic measurements [Review]

机译：用于铁磁测量的微机械仪器[综述]

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摘要

I review some of the novel methods for measuring ferromagnetic properties of thin films based on micromechanical magnetometers and put them into context relative to current research on nanomagnetism. Measurements rely on the detection of mechanical forces or torques on thin films deposited onto microcantilevers. Displacements of the cantilever are detected by optical methods similar to those developed for atomic force microscopy. High sensitivities are achieved by integrating the sample with the detector, allowing magnetic measurements of samples with a total magnetic moment smaller than that detectable with conventional magnetometers. Cantilevers with low spring constants and high mechanical Q are essential for these measurements. Sensitivities better than 10(5) mu(B) are possible at room temperature with the potential for single spin detection below 1 K, where the thermomechanical noise of micromechanical sensors is substantially reduced. [References: 68]
机译：我回顾了一些基于微机械磁力计的测量薄膜铁磁性能的新颖方法，并将其与当前有关纳米磁性的研究进行了比较。测量取决于对沉积在微悬臂梁上的薄膜的机械力或扭矩的检测。通过类似于为原子力显微镜开发的光学方法检测悬臂的位移。通过将样品与检测器集成在一起，可以实现高灵敏度，从而可以对样品进行磁性测量，其总磁矩小于常规磁力计所能检测到的总磁矩。具有低弹簧常数和高机械Q的悬臂对于这些测量至关重要。在室温下灵敏度可能高于10（5）mu（B），单次自旋检测的电势可能低于1 K，从而显着降低了微机械传感器的热机械噪声。 [参考：68]

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