Results 21 to 30 of about 1,247,622 (151)
Equivalence effects of electrical conductivity in surface nuclear magnetic resonance(地面核磁共振导电性的等效影响)
Zhejiang Daxue xuebao. Lixue ban, 2008 地面核磁共振测深中，导电性影响一般用等效导电半空间代替.这种等效性合理性如何尚没有任何讨论.本文利用2层模型和与其等效的均匀导电半空间模型为例，对两种模型的磁场变化规律、地面核磁共振的核函数变化情况以及核磁响应进行了数值模拟分析.结果表明，任意层状导电介质与其等效的均匀导电半空间模型的磁场分布规律不同，导致在地面核磁共振测深中相应的积分核函数在深度上衰减规律出现差异，表现为地面核磁共振测深信号的差异.导电性的等效性不是核磁共振测深的等效性.
WENGAi-hua(翁爱华) +1 more
doaj +1 more source
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Ultrathin, lightweight, and mechanically compliant electromagnetic interference (EMI) shields are increasingly required for high‐frequency electronic devices. However, conventional metallic shields predominantly rely on conductivity‐driven reflection mechanisms, which become ineffective at reduced thickness and may cause severe secondary ...
Zida Zhang +7 more
wiley +1 more source
磁性粒子Fe(Mn)对FeMnAl合金磁性和热力学性质的贡献
四川大学学报. 自然科学版, 2015 基于伊辛模型的单自旋反转蒙特卡洛算法,研究了无序Fe0.5Mn0.1Al0.4合金中的铁磁性粒子Fe和反铁磁性粒子Mn对体系的磁性和热力学性质的贡献.首先,检验了晶格大小以及Monte Carlo模拟步数对结果的影响,证实了低温合金阻挫的存在,确定了Fe0.5Mn0.1Al0.4合金的冻结温度以及居里温度;其次,详细研究了铁磁性粒子Fe和反铁磁性粒子Mn对Fe0.5Mn0.1Al0.4合金的磁化强度和磁化率的贡献,发现低温区域磁化强度和磁化率的变化是由反铁磁性粒子Mn决定的 ...
高清河, 杜安, 刘锦超
doaj
Magnetization Dynamics Control for Noise Reduction in Fluxgate Sensors
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Fluxgate sensors are indispensable for the detection of weak magnetic fields. However, their noise performance remains constrained by an incomplete understanding of the interplay between the high‐frequency magnetization dynamics of the core material and the overall sensor behavior.
Chunyang Mu +11 more
wiley +1 more source
Flexible, Robust Transparent Conductive Films With Excellent Electromagnetic Shielding Properties
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Transparent conductive films (TCFs) are indispensable components for next‐generation wearable electronics, intelligent robots, and electromagnetic interference (EMI) shielding devices. However, the fabrication of conventional random metallic mesh suffers from an inherent trade‐off between “randomness and controllability”.
Shanghao Lu +5 more
wiley +1 more source
Gongye shui chuli, 2021 通过ZnCl2和FeCl3的同步活化磁化法，制备出了既有磁分离能力又有较强吸附能力的磁性多孔炭材料。结果表明：ZnCl2和FeCl3起到了较好的活化作用，随着活化剂用量的增加，孔隙率和比表面积迅速增大，孔填充效果增强。磁性多孔炭比表面积最高为2 302 m2/g，孔容最高为1.176 cm3/g，同时在表面络合和π-π键相互作用下，吸附性能也明显提高。磁性多孔炭对孔雀石绿有着较好的吸附效果，最大吸附量为1 004.3 mg/g。饱和磁化强度为7.99 emu/g ...
苏石川, 林立涛, 王亮
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Gongye shui chuli, 2018 磁性催化剂不仅催化活性高，还具有独特的磁响应性，在外加磁场作用下可以实现分离与回收。磁性催化剂可有效解决传统Fe2+催化剂回收困难、易产生二次污染等问题。综述了近年来的相关研究，重点讨论磁性Fenton催化剂的分类和合成方式，并介绍了其在Fenton和类Fenton体系中的催化性能。分析表明，磁性催化剂来源广泛、可再生、合成操作相对简便易行。未来研究应致力于拓展催化剂的pH适用范围、提高催化剂稳定性、开发新型负载材料。
张依含, 史静, 陈悦, 朱思怡
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Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Advanced metallic glasses, leveraging their ultrahigh strength, excellent corrosion resistance, superior soft magnetic properties and good biocompatibility, have gradually become indispensable strategic cornerstones in critical fields such as aerospace, electronic information and energy power. This unique combination of properties enables them
Yizhou Liu +11 more
wiley +1 more source
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT The low energy density of sodium‐ion batteries (SIBs) remains a major barrier to their large‐scale deployment. Alloy‐based anodes represent a promising class of materials owing to their high specific capacity and low operating potential for sodium storage. However, their practical application is hindered by severe volume expansion upon cycling.
Chen Wang +10 more
wiley +1 more source
Multimodal Deep Learning‐Assisted Microstructural Evaluation System for Sintered NdFeB Magnets
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT The performance of sintered NdFeB magnets, especially coercivity, is critically determined by their complex microstructure. However, a quantitative microstructural evaluation system (MES) is much needed but has long been missing in the community.
Zihao Wang +8 more
wiley +1 more source