Andrew D. M. Charles*, Andrew N. Rider, Sonya A. Brown and Chun H. Wang,
{"title":"Creating High Aspect Ratio Magnetostrictive Flakes to Enhance Magnetoelectric Polymer Composites","authors":"Andrew D. M. Charles*, Andrew N. Rider, Sonya A. Brown and Chun H. Wang, ","doi":"10.1021/acsaelm.4c00594","DOIUrl":null,"url":null,"abstract":"<p >Polymer-based magnetoelectric materials form a technologically significant class of magneto-polymer composites which show promise for the production of low-cost and mechanically durable sensors, energy harvesters, and transducers. The use of a particle magnetostrictive phase in these composites offers a scalable path to producing large-area magnetoelectric materials and, so, is highly attractive. A key challenge for these composites is improving the coupling between the particle and polymer phases. In this work, we explore the use of shape anisotropy in galfenol flake particles as a means of bestowing magnetoelectric anisotropy. Cryogenic ball milling is used as a means to produce particulates, which are distributed and aligned in P(VDF-TrFE) composite films. A direction-specific, bias-free magnetoelectric coupling as high as 46.27 mV/cm·Oe was achieved. The use of this material in an energy harvesting device yielded peak energy harvesting power densities of 46.97 and 2.03 μW/cm<sup>3</sup> for vibrational and magnetic fields, respectively.</p>","PeriodicalId":3,"journal":{"name":"ACS Applied Electronic Materials","volume":null,"pages":null},"PeriodicalIF":4.3000,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Electronic Materials","FirstCategoryId":"88","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acsaelm.4c00594","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
Polymer-based magnetoelectric materials form a technologically significant class of magneto-polymer composites which show promise for the production of low-cost and mechanically durable sensors, energy harvesters, and transducers. The use of a particle magnetostrictive phase in these composites offers a scalable path to producing large-area magnetoelectric materials and, so, is highly attractive. A key challenge for these composites is improving the coupling between the particle and polymer phases. In this work, we explore the use of shape anisotropy in galfenol flake particles as a means of bestowing magnetoelectric anisotropy. Cryogenic ball milling is used as a means to produce particulates, which are distributed and aligned in P(VDF-TrFE) composite films. A direction-specific, bias-free magnetoelectric coupling as high as 46.27 mV/cm·Oe was achieved. The use of this material in an energy harvesting device yielded peak energy harvesting power densities of 46.97 and 2.03 μW/cm3 for vibrational and magnetic fields, respectively.