MERRILL: Micromagnetic Earth Related Robust Interpreted Language Laboratory.
MERRILL: Micromagnetic Earth Related Robust Interpreted Language Laboratory.
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DOI：
10.1002/2017gc007279
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发表时间：
2018-04
期刊：
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通讯作者：
Muxworthy AR
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文献类型：
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作者：
Ó Conbhuí P;Williams W;Fabian K;Ridley P;Nagy L;Muxworthy AR
复杂的磁畴结构和它们之间的能垒是岩石磁学中伪单畴现象的原因，并对古地磁样品的剩磁有重要贡献。本文介绍了梅里尔，一个用于三维微磁学的开源软件包，它是为计算此类复杂结构而优化和设计的。梅里尔有一个简单的脚本用户界面，需要很少的计算知识来使用，但提供研究强度算法来模拟磁性材料中复杂的非均匀畴结构。它使用有限元/边界元数值方法，最适合于计算磁化结构的局部能量最小值（LEM）在不规则的晶粒几何形状，感兴趣的岩石和古地磁社区。梅里尔能够模拟单个颗粒和相互作用颗粒的小组件中LEM状态的磁特性，包括附近LEM之间的鞍点路径。这里简要描述了数值模型，并提供了脚本语言和可用命令的概述。代码的开源性质鼓励科学界未来开发该模型。梅里尔是一个为地球科学界提供的强大的微磁性建模软件包，它使用简单的脚本语言接口梅里尔可以对磁性矿物中的现象（如剩磁和磁滞）进行建模，而无需专业的计算知识。本文介绍了微磁性建模和梅里尔，包括对岩石磁学和古磁学有用的示例脚本。
Complex magnetic domain structures and the energy barriers between them are responsible for pseudo‐single‐domain phenomena in rock magnetism and contribute significantly to the magnetic remanence of paleomagnetic samples. This article introduces MERRILL, an open source software package for three‐dimensional micromagnetics optimized and designed for the calculation of such complex structures. MERRILL has a simple scripting user interface that requires little computational knowledge to use but provides research strength algorithms to model complex, inhomogeneous domain structures in magnetic materials. It uses a finite element/boundary element numerical method, optimally suited for calculating magnetization structures of local energy minima (LEM) in irregular grain geometries that are of interest to the rock and paleomagnetic community. MERRILL is able to simulate the magnetic characteristics of LEM states in both single grains, and small assemblies of interacting grains, including saddle‐point paths between nearby LEMs. Here the numerical model is briefly described, and an overview of the scripting language and available commands is provided. The open source nature of the code encourages future development of the model by the scientific community. MERRILL is a powerful micromagnetic modeling package for the Earth Sciences community which uses a simple scripting language interface MERRILL can model phenomena in magnetic minerals, like remanence and hysteresis, without need for specialist computational knowledge This article is an introduction to micromagnetic modeling and MERRILL, including example scripts useful for rock‐magnetism and paleomagnetism