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MERRILL: micromagnetic earth related robust interpreted language laboratory

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Title: MERRILL: micromagnetic earth related robust interpreted language laboratory
Authors: Ó Conbhuí, P
Williams, W
Fabian, K
Muxworthy, AR
Ridley, P
Nagy, L
Item Type: Journal Article
Abstract: 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.
Issue Date: 1-Apr-2018
Date of Acceptance: 3-Feb-2018
URI: http://hdl.handle.net/10044/1/59015
DOI: https://dx.doi.org/10.1002/2017GC007279
ISSN: 1525-2027
Publisher: American Geophysical Union
Start Page: 1080
End Page: 1106
Journal / Book Title: Geochemistry, Geophysics, Geosystems
Volume: 19
Issue: 4
Copyright Statement: © 2018. The Authors. This is an open access article under the terms of the Creative Commons Attri- bution License, which permits use, dis- tribution and reproduction in any medium, provided the original work is properly cited.
Sponsor/Funder: Natural Environment Research Council (NERC)
Funder's Grant Number: NE/J020508/1
Keywords: Science & Technology
Physical Sciences
Geochemistry & Geophysics
micromagnetism
micromagnetic modeling
rock magnetism
mineral magnetism
paleomagnetism
MINIMUM ENERGY PATHS
IRON PARTICLES
MAGNETITE
MAGNETIZATION
GRAINS
DEMAGNETIZATION
ANISOTROPY
CONSTANT
SYSTEMS
NICKEL
04 Earth Sciences
02 Physical Sciences
Publication Status: Published
Open Access location: https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2017GC007279
Online Publication Date: 2018-02-23
Appears in Collections:Faculty of Engineering
Earth Science and Engineering



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