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澳大利亚昆士兰州艾萨谷的三维地质和磁模拟

物探化探译丛 1998年第A4期 82-85页

作者： Ames.,CC 石磊

地球物理数据能够对３－Ｄ构造解释起到重要的约束作用，因为任何解释必须给磁性单元指定适中的位置、深度和几何形状以便与实测的地球物理资料相匹配。虽然得到的模型可能是非唯一性的，但它提供了一种方法。根据这种方法可以研究概念... 详细信息

地球物理数据能够对３－Ｄ构造解释起到重要的约束作用，因为任何解释必须给磁性单元指定适中的位置、深度和几何形状以便与实测的地球物理资料相匹配。虽然得到的模型可能是非唯一性的，但它提供了一种方法。根据这种方法可以研究概念模型并且确定概念模型是否符合于地球物理和地质资料，２－Ｄ和３－Ｄ地球物理方法来确定艾萨谷的构造和构造历史。利用Ｃ．Ａ．Ｄ．程序模块建立了澳大利亚萨谷地区的３－Ｄ构造模型。

关键词：磁铁矿探矿三维地质磁模拟航空磁法勘探

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关于用剩磁作磁模拟的注释

水文地质工程地质技术方法动态 2003年第1期 17-17页

作者： PeterFurness 何雪洲等

Growth and micromagnetic simulation of magnetite nanoparticles

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中国科学：物理学、力学、天文学英文版 2011年第7期54卷 1208-1212页

作者： ZHAO SuFen SUN Qian WANG RongMing HAN YuNan Key Laboratory of Micro-nano Measurement-Manipulation and Physics (Ministry of Education) and Department of Physics Beijing University of Aeronautics and Astronautics Beijing 100191 China School of Physics Hunan University of Science and Technology Xiangtan 411201 China

Magnetite nanoparticles with different sizes and different assemblies were synthesized via hydrothermal *** simulation shows the magnetite nanocubes with different sizes have different energy states,which determines the assembly *** nanocubes with the side length of 30-60 nm tended to be dispersed while both nanochains and dispersed nanoparticles were found to grow for the nanocubes with the side length less than 30 nm,which can be explained in the fact that the above two assembly modes have very close *** assembly mode of nanocubes with the size bigger than 60 nm is generally nanorings consisting of connected inter-grown nanocubes and the nanocubes are no longer single *** simulations are consistent with the experimental results.

关键词：纳米粒子磁铁矿磁模拟生长水热法合成仿真结果装配模式纳米环

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电极前置式水下组合磁源磁场研究

数字海洋与水下攻防 2022年第1期5卷 38-43页

作者：庞鑫刘忠乐李华庞彦东胡家文海军工程大学兵器工程学院

随着敌人反潜力量的增强，目前的磁诱饵磁源结构存在着磁模拟耗能大导致诱饵续航不足的问题，越来越无法满足在战役层面的作战需要。针对此问题，基于现有的航行体尾部拖曳后置两电极式磁源结构，提出单电极前置式组合磁源方案，建立其... 详细信息

随着敌人反潜力量的增强，目前的磁诱饵磁源结构存在着磁模拟耗能大导致诱饵续航不足的问题，越来越无法满足在战役层面的作战需要。针对此问题，基于现有的航行体尾部拖曳后置两电极式磁源结构，提出单电极前置式组合磁源方案，建立其空中磁场分布模型，并进行了仿真分析。结果表明：单电极前置式组合磁源结构能保证较好模拟目标磁场的同时，减小磁模拟消耗的电流，可以实现能源的高效利用。

关键词：磁诱饵磁源空中磁场磁模拟

Microwave permeability of single cobalt nanotube studied by micromagnetics simulations and generalized Snoek's law

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Science China(Technological Sciences) 2014年第2期57卷 254-258页

作者： HAN ManGui GUO Wei DENG LongJiang State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China

Microwave permeability spectra of single Co nanotube under equilibrium state have been studied by micromagnetics *** than four obvious resonance peaks have been found(11.72,24.20,33.18 and 39.55 GHz).Such large resonance frequency cannot be found in other traditional magnetic *** configurations of magnetic moments along the nanotube have been *** results show that the top end of nanotube has a"flow-out"pattern of magnetic moments *** bottom end has a"flow-in"pattern of magnetic moments *** magnetic moments within the main body of nanotube are aligned perfectly along the length of *** magnitude of natural resonance peak is strongly related to the volume fraction of a zone,which has the same orientation of magnetic *** microwave permeability values have been found for single *** generalized Snoek’s law has been used to validate the micromagnetics simulations in this paper.

关键词：微波磁导率碳纳米管磁模拟定律广义磁矩结构钴平衡状态

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Effects of the grain size distribution on magnetic properties of magnetite: constraints from micromagnetic modeling

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Chinese Science Bulletin 2014年第34期59卷 4763-4773页

作者： Kunpeng Ge Qingsong Liu Palaeomagnetism and Geochronology Laboratory (SKL-LE) Institute of Geology and Geophysics Chinese Academy ofSciences University of Chinese Academy of Sciences

Magnetite is the most important magnetic mineral in paleomagnetism. Its magnetic properties are controlled by many factors, such as grain size distribution,shape and interactions. Traditional rock magnetic experiments, however, have great difficulty in decoupling the effects of these parameters. In this study, we attempted to investigate the effects of grain size distribution on magnetic properties of magnetite powders by using a micromagnetic method. The particle geometries used in the micromagnetic model were based on the grain size distribution observed in a synthetic magnetite powder. The simulated hysteresis parameters agree well with the experimental measurements and provide clear microstructures of the magnetic remanence. Our results show that grain size plays a more important role in affecting hysteresis parameters of magnetite assemblages than shape under effects of interactions. Uniform or vortex superstates formed by two or more particles are found and display different stabilities of magnetic recording in *** domain structures of single-domain(SD) particles are reversed as the applied field decreases to zero. Small pseudo-single-domain particles behave as SD structures and may dominate the magnetic recordings. In all, micromagnetic modeling of grain size distributions provide a better understanding of magnetic assemblages consisting of nanoscale particles.

关键词：磁性矿物磁铁矿磁模拟粒度分布晶粒尺寸分布几何形状微观结构颗粒大小

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垂直共振磁场下三维磁性纳米圆盘的自旋波模式及其动力学

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凝聚态物理学进展 2019年第2期8卷 41-51页

作者：许金明王瑞方厦门大学物理学系福建厦门厦门大学半导体光电材料及其高效转换器件协同创新中心福建厦门

本文采用微磁模拟的方法研究了不同厚度的坡莫合金纳米圆盘在垂向交变磁场作用下所激发的自旋波模式。当坡莫合金纳米圆盘厚度与半径相比不可忽略时,磁矩不再沿着厚度方向均匀分布,形成了中间大两头小的橄榄球状涡核,这与退磁能与交换... 详细信息

本文采用微磁模拟的方法研究了不同厚度的坡莫合金纳米圆盘在垂向交变磁场作用下所激发的自旋波模式。当坡莫合金纳米圆盘厚度与半径相比不可忽略时,磁矩不再沿着厚度方向均匀分布,形成了中间大两头小的橄榄球状涡核,这与退磁能与交换能的相互竞争密切相关。我们发现除了常见的径向自旋波模式外,还存在着厚度方向驻波模式与径向自旋波模式的混合模式,其频率要远大于低阶径向自旋波模式的本征频率。当圆盘厚度足够大时,可以观察到厚度方向的高阶驻波模式与径向自旋波模式的混合模式,却难以观察到纯粹的径向自旋波模式。当我们给这种混合模式施加一个相位匹配的垂向共振外磁场时,涡旋态极性更容易发生翻转。

关键词：磁涡旋态自旋波模式磁模拟