Enhancement of soft magnetic properties in surface-oxidized Fe/Fe3O4 composites via Co-nanoparticle doping and hot pressing

IF 3.1 4区物理与天体物理 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Current Applied Physics Pub Date : 2025-10-01 DOI:10.1016/j.cap.2025.09.028

Muhammad Arif , Donghun Han , Seunghun Cha , Changsun Pak , Young-Kwang Kim , Sang Woo Kim , Bo Wha Lee , Muhammad Awais , Dongwhi Choi , Jong-Soo Rhyee

{"title":"Enhancement of soft magnetic properties in surface-oxidized Fe/Fe3O4 composites via Co-nanoparticle doping and hot pressing","authors":"Muhammad Arif , Donghun Han , Seunghun Cha , Changsun Pak , Young-Kwang Kim , Sang Woo Kim , Bo Wha Lee , Muhammad Awais , Dongwhi Choi , Jong-Soo Rhyee","doi":"10.1016/j.cap.2025.09.028","DOIUrl":null,"url":null,"abstract":"<div><div>Soft magnetic composites are essential to power electronics technologies, including transformers, motors, and generators. However, as electronic devices advance, SMCs should have excellent soft magnetic properties, such as high permeability, high saturation magnetization, and reduced core loss at high frequencies. In this study, we found exceptionally high soft magnetic properties for Co nanopowder distribution in Fe3O4-coated Fe SMCs prepared via the hot-pressing technique. Incorporating Co nano-powders leads to a notable increase in density, with the most compact structure observed in the sample containing the highest Co concentration. Electrical resistivity increases to 55.54 mΩ cm for a sample containing 1 wt% Co nanopowder, compared to 15 mΩ cm for a pristine sample. The SMCs exhibit excellent soft magnetic properties, with high saturation magnetization (Ms ∼216 emu/g), high permeability (μe∼237.42) (144 % higher than the undoped sample), high DC bias performance (71.45 % at 100 kOe), and reduced core loss (Pcv, Ph, and Pe), compared to the other state-of-the-art samples. It indicates that Fe/Fe3O4-Co SMCs are highly promising for miniaturization and high-energy efficiency of electronic components.</div></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":"80 ","pages":"Pages 256-264"},"PeriodicalIF":3.1000,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Current Applied Physics","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S156717392500207X","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

Soft magnetic composites are essential to power electronics technologies, including transformers, motors, and generators. However, as electronic devices advance, SMCs should have excellent soft magnetic properties, such as high permeability, high saturation magnetization, and reduced core loss at high frequencies. In this study, we found exceptionally high soft magnetic properties for Co nanopowder distribution in Fe₃O₄-coated Fe SMCs prepared via the hot-pressing technique. Incorporating Co nano-powders leads to a notable increase in density, with the most compact structure observed in the sample containing the highest Co concentration. Electrical resistivity increases to 55.54 mΩ cm for a sample containing 1 wt% Co nanopowder, compared to 15 mΩ cm for a pristine sample. The SMCs exhibit excellent soft magnetic properties, with high saturation magnetization (M_s ∼216 emu/g), high permeability (μ_e∼237.42) (144 % higher than the undoped sample), high DC bias performance (71.45 % at 100 kOe), and reduced core loss (P_cv, P_h, and P_e), compared to the other state-of-the-art samples. It indicates that Fe/Fe₃O₄-Co SMCs are highly promising for miniaturization and high-energy efficiency of electronic components.

Abstract Image

查看原文本刊更多论文

纳米co掺杂和热压增强表面氧化Fe/Fe3O4复合材料软磁性能

软磁复合材料对电力电子技术至关重要，包括变压器、电动机和发电机。然而，随着电子器件的发展，SMCs应该具有优异的软磁性能，如高磁导率、高饱和磁化强度和高频下低铁芯损耗。在这项研究中，我们发现通过热压技术制备的fe3o4包覆的Fe SMCs中Co纳米粉的分布具有异常高的软磁性能。加入Co纳米粉末导致密度显著增加，在含有最高Co浓度的样品中观察到最紧凑的结构。含有1 wt% Co纳米粉的样品的电阻率增加到55.54 mΩ cm，而原始样品的电阻率为15 mΩ cm。SMCs具有优异的软磁性能，具有高饱和磁化强度（Ms ~ 216 emu/g），高磁导率（μe ~ 237.42）（比未掺杂样品高144%），高直流偏置性能（100 kOe时71.45%），与其他先进样品相比，磁芯损耗（Pcv， Ph和Pe）降低。这表明Fe/Fe3O4-Co SMCs在电子元件的小型化和高效化方面具有广阔的应用前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Current Applied Physics 物理-材料科学：综合

CiteScore

4.80

自引率

0.00%

发文量

213

审稿时长

33 days

期刊介绍： Current Applied Physics (Curr. Appl. Phys.) is a monthly published international journal covering all the fields of applied science investigating the physics of the advanced materials for future applications. Other areas covered: Experimental and theoretical aspects of advanced materials and devices dealing with synthesis or structural chemistry, physical and electronic properties, photonics, engineering applications, and uniquely pertinent measurement or analytical techniques. Current Applied Physics, published since 2001, covers physics, chemistry and materials science, including bio-materials, with their engineering aspects. It is a truly interdisciplinary journal opening a forum for scientists of all related fields, a unique point of the journal discriminating it from other worldwide and/or Pacific Rim applied physics journals. Regular research papers, letters and review articles with contents meeting the scope of the journal will be considered for publication after peer review. The Journal is owned by the Korean Physical Society.