The meaning of maxima and minima in first order reversal curves: Determining the interaction between species in a sample
The meaning of maxima and minima in first order reversal curves: Determining the interaction between species in a sample
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DOI：
10.1016/j.jmmm.2022.170042
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发表时间：
2022-10
影响因子：
2.7
通讯作者：
R. Moreno;W. Williams;A. Muxworthy;G. Paterson;D. Heslop
中科院分区：
文献类型：
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作者：
R. Moreno;W. Williams;A. Muxworthy;G. Paterson;D. Heslop
一阶反转曲线（FORCs）是一种广泛应用于研究领域的磁性材料表征技术。自20年前它们首次应用于地球科学以来，它们在科学中的重要性不断增长，新的实验技术随后被设计基于forc的原始思想。尽管如此，最近对设计良好和简单的磁结构进行的实验工作表明，即使对于最简单的情况，对FORC数据的解释也缺乏理解。在这项工作中，我们解析地解决了这个问题，解释了极大值、极小值和噪声尾的含义，并制定了提取磁结构之间相互作用场的策略。这种相互作用场的来源通常是静磁能，然而，我们提出这种策略也可以应用于交换相互作用的估计。
First-order reversal curves (FORCs) are a characterization technique for magnetic materials used in a wide range of research fields. Since their first application in the Earth Sciences two decades ago, their importance in science has been continuously growing and new experimental techniques have been subsequently designed based on the original idea of FORCs. Nonetheless, very recent experimental works on very well designed and simple magnetic structures demonstrate that even for the most simple cases the interpretation of FORC data lacks understanding. In this work, we address this problem analytically, explaining the meaning of maxima, minima and noisy tails and set a strategy to extract the interaction field between magnetic structures. The origin of this interaction field is often the magnetostatic energy, however, we propose that this strategy could be applied for estimating exchange interactions too.