代写essay-交变梯度磁力仪(AGFM)的研究

在本篇代写essay-交变梯度磁力仪(AGFM)的研究中,交变梯度磁力仪(AGFM)是由佛兰德斯(Flanders)公司引进的一种积分磁力测量方法,通过测量梯度磁场作用于磁偶极子上的净平动力来确定样品的体磁矩。外加磁场既可以与样品表面平行,也可以与样品表面垂直。在能力方面,不断研究AGFM的应用领域,以确定和评估其他磁力仪的比较效益。可以观察到,在AGFM中,测量它所需要的磁性材料的量可能很小。这不是其他测量系统的情况。在这里,较弱的磁性样品可以轻松测量。接下来有关代写essay-交变梯度磁力仪(AGFM)的研究分享给大家阅读。

Alternating Gradient Force Magnetometer (AGFM), introduced by Flanders, is an integral method of magnetometry which determines the bulk magnetic moment of a sample by measuring the net translational force exerted on a magnetic dipole by a gradient magnetic field, . The applied magnetic field can be either parallel or perpendicular to the sample surface and the principle of the AGFM is sketched in figure 3.1.

In terms of capabilities, the applied field of the AGFM is studied continuously to identify and assess comparative benefits from other magnetometers. It is observed that in the AGFM, the amount of magnetic materials that are required for measuring it can be small. This is not the case with other measurement systems. Here the weaker magnetic samples can be measured at ease.
Usually quick connect transducer is provided that enables for better sample charging and for better control. Feedback servo signals are sometimes used in the field sweep and the static sweep. This increases the range of control, and finally, the resonance, the probe Q, phase and sensitivity are easily adjustable. This means that faster data collection for sample analysis is possible. This is done at 10 ms per data point. The maximum sample size is very flexible, as it can support till a 5 mm x 5 mm x 2 mm at times. This, however, will be dependent on the form of construction.

Now the original reasons for why the AGFM was selected and used more popularly are seen to be because of the need for better ambient temperature operations. Where sensitivity is very high for others, in the case of the AGFM better tolerance and sensitivity is aimed at. The operation could be extendable to cryogenic temperatures in the future. There are some constraints in the form of cost to consider, film sample thickness etc. As of current times, research studies show that the instrument is used in the context of study of exchange interactions between the hard (FePt) and soft (Fe) phase. Structural characterizations are studied using the instrument and the AGFM is useful for investigating morphology with atomic force microscopy.

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