{"title":"An unusual approach significantly improving the magnetostrain performance of Ni-Mn-Ga composite materials","authors":"DongKeun Han , Wan-Ting Chiu , Masaki Tahara , Naoki Nohira , Volodymyr Chernenko , Senentxu Lanceros-Mendez , Hideki Hosoda","doi":"10.1016/j.scriptamat.2025.116624","DOIUrl":null,"url":null,"abstract":"<div><div>The magnetization and magnetostrain behaviors of “Cu/Ni-Mn-Ga single crystalline particles/Cu” laminate composite have been studied depending on the substitution of Cu foils with soft magnetic high-permeability Fe foils. It was found that this replacement caused both a significant reduction in the threshold magnetic field for martensitic variant reorientation and a sudden change in the \"magnetostrain versus magnetic field\" dependence. Quantitative analysis confirmed that these unusual effects in the particle layer were due to additional tensile stress generated by the magnetically induced repulsive force between the two Fe foils. The incorporation of soft magnetic materials with high permeability into ferromagnetic shape memory alloys (FSMA) composites offers an effective way to significantly improve their magnetostrain performance.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"261 ","pages":"Article 116624"},"PeriodicalIF":5.3000,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Scripta Materialia","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1359646225000879","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
The magnetization and magnetostrain behaviors of “Cu/Ni-Mn-Ga single crystalline particles/Cu” laminate composite have been studied depending on the substitution of Cu foils with soft magnetic high-permeability Fe foils. It was found that this replacement caused both a significant reduction in the threshold magnetic field for martensitic variant reorientation and a sudden change in the "magnetostrain versus magnetic field" dependence. Quantitative analysis confirmed that these unusual effects in the particle layer were due to additional tensile stress generated by the magnetically induced repulsive force between the two Fe foils. The incorporation of soft magnetic materials with high permeability into ferromagnetic shape memory alloys (FSMA) composites offers an effective way to significantly improve their magnetostrain performance.
期刊介绍：
Scripta Materialia is a LETTERS journal of Acta Materialia, providing a forum for the rapid publication of short communications on the relationship between the structure and the properties of inorganic materials. The emphasis is on originality rather than incremental research. Short reports on the development of materials with novel or substantially improved properties are also welcomed. Emphasis is on either the functional or mechanical behavior of metals, ceramics and semiconductors at all length scales.
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