论文标题

评估磁性表征方法的可靠性和有效性范围

Assessing the reliability and validity ranges of magnetic characterization methods

论文作者

Kouhpanji, Mohammad Reza Zamani, Stadler, Bethanie J H

论文摘要

评估磁性纳米线(MNW)的相互作用场对于在包括Spintronic设备和纳米医学在内的不同应用中提高其功能至关重要。近年来,已经提出了几种定量方法,并成为量化相互作用领域并将其效应与顽固性解散的必然工具。但是,所达到的结果的不确定性引起了无数的公开问题,导致文献之间存在差异。在这里,我们采用了名为投影方法的新型实验方法来解决这些差异。使用对四种最常用方法的比较分析(滞后循环方法,Remanence曲线方法,一阶反转曲线方法和投影方法),我们明确地阐明了这些方法的可靠性和有效性限制,以阐明差异的起源。我们表明,如果与顽固性相比,相互作用曲线的相互作用较弱,则必须仅使用re漫画曲线方法来量化它们。此外,我们表明,与滞后环方法相似,相似的相似曲线方法和一阶反向曲线方法都无法完全解除相互作用场的影响。

Evaluating the interaction fields of magnetic nanowires (MNWs) is of utmost importance for advancing their functionality in diverse applications including spintronic devices and nanomedicine. In recent years, several quantitative methods have been proposed and become inevitable tools to quantify the interaction fields and decouple their effects from the coercivity. However, the uncertainty of the attained results arose countless open questions leading to discrepancies among the literature. Here, we employ our novel experimental method, named the projection method, to resolve these discrepancies. Using a comparative analysis of the four most commonly used methods (hysteresis loops method, remanence curves method, first-order reversal curve method, and projection method), we unambiguously explicate the reliability and validity limits of these methods to elucidate the origin of the discrepancies. We show that the remanence curves method must solely be used for quantifying the interaction fields if they are considerably weaker compared to the coercivity. Furthermore, we show that both the remanence curves method and first-order reversal curve method fail to fully decouple the interaction fields effects from the coercivity, similar to the hysteresis loops method.

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