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--> Frontier Research Institute for Interdisciplinary SciencesTohoku University Directions 日本語 English CONTACT 日本語 English About FRISGreetingsOverviewMissionsOrganizationTenure track system in FRISMaps & DirectionsPublicationAnnual MeetingAbstract for Annual MeetingConsultation DeskResearcherAdvanced Interdisciplinary Research DivisionHiroshi MasumotoTakehito ShimatsuTakashi ItohKenji TomaShinsuke NiwaTakaaki TomaiCreative Interdisciplinary Research DivisionYuanyuan GuoMasaki OkumuraNguyen Tuan HungHiroshi UenoToshiharu IchinoseYuta KudoHiroya AbeYuta NakayasuNaoya KitajimaDaniel Pastor-GalanYasunori OkamotoTakuro IshiiMasaki YamadaYuta YamaneKexin XiongKohei ShimokawaShinichi SatoKotaro YasuiSUN SaiYuji SaitoAtsushi TaharaKyoko ChibaYuka HatanoHakuto SuzukiKaoru HiramotoHideaki T. MatsubayashiAseel Mahmoud Suleiman MarahlehSakura KiuchiShigeo S. KimuraBin Ho LeTom WellingHiroyuki UechiFumi MurakoshiChao TangTakahiro ChibaIzumi MatsudairaYuka FujikiLinda ZhangYueh Hsuan WengManaging & Planning DivisionJunji SaidaHideaki FujiwaraEndowed Research DivisionsSenior-advisorTomoyuki YamayaVisiting Professors / Collaborative ResearchersSpecially-appointedOne-time membersSeiji KojimaDaisuke SuzukiHidenobu YajimaHirokazu KawamuraShozo FurumotoKanako ShojikiYiwen ZhangYuiko Morita-FujimuraPierre Antoine GESLINYuma TakahashiTatsuya SatoYuki FuruseKim Sung HoonYui ArimatsuYuichiro FujiokaRui NouchiAyako NakamuraNozomi SaitoTetsuya KajitaHiroyasu HatakeyamaYuki ShibazakiSohei TasakiHitomi AnzaiYuji ShimogonyaHideaki YamamotoHiroki TakikawaTakeshi InoueTakashi MisakaMikito TanakaGao JunhongNaoya OnizawaYasufumi ArakiDaisuke SaitoShusaku SugimotoMasafumi NakayamaHirofumi NodaMasanori IzumiMichiko KanoKohji TsumuraKenichi FunamotoMasahiro KayamaAtsushi NarukoShinsuke SuzukiGen HayaseDaisuke YoshinoTakashi ShimonishiHisashi InoueTakayuki KojimaNobuyuki MatsumotoSeiji KamadaSae KanekoTomoki KimuraYuichiro NakajimaShimpei EndoRui YamadaHisashi KinoYuki Suzuki Fumihiro KanedaYuji NashimotoYusuke SatoShuhei ObaraYasukazu DaigakuHanae AokiHiroki IdaAlimu TuohetiKaoru KakinumaJoji KusuyamaJiuhui HanYang CaoJun ZhangKohei TamuraChaoliang ZhangTomokatsu OnagaMasanori WakizakaKohei IchikawaTomomi TsunematsuChrystelle BERNARDKozue ShiomiYohei KawazuraSatoshi IihamaTakuya MabuchiFeatureTopicsFRIS InterviewsFRIS Interviews #01FRIS Interviews #02FRIS Interviews #03FRIS Interviews #04FRIS Interviews #05FRIS Interviews #06FRIS Interviews #07FRIS Interviews #08FRIS Interviews #09FRIS Interviews #10FRIS Interviews #11FRIS Interviews #12FRIS Interviews #13FRIS Interviews #14FRIS Interviews #15FRIS Interviews #16FRIS Hub MeetingFRIS Hub Meeting 2024FRIS Hub Meeting 2023FRIS Hub Meeting2022FRIS Hub Meeting2021FRIS Hub Meeting archiveProgramsOpen Research ProposalResearch ProjectsRecruitOpen Staff PositionsFRIS Regulations pertaining to the tenure track systemHandbook for International ResearchersFRIS FundFRIS Fund for Early-Career Independent ResearchersLINK Research Projects HOME en Programs Research Projects *Support Program for Interdisciplinary Research 2016 umestu Support Program for Interdisciplinary Research 2016 Assoc.Prof. Rie Umetsu Tohoku Univ.Database--> Title Control of electrostrictive and magnetostrictive properties, and analyses of domain structure in functional materials Energy harvesting is the technology of the generating electrical energy from wasted ambient energy, such as thermal energy, kinetic energy and windy energy. Because there are many small-scale energy sources that generally cannot be used, the energy harvesting has been recently receiving much attention. The common mechanisms for harvesting energy based on vibration are electrostatic, electromagnetic, piezoelectric and most recently magnetostrictive. In magnetostrictive materials, strain causes change in magnetization and magnetic flux density. The idea of the energy harvesting based on magnetostrictive material uses the change of magnetic field and generates electrical current throughout a pick-up coil. The magnetostrictive materials have advantages in the high mechanical strength and providing low impedance at the fundamental frequencies of common structural vibration sources. Studies on the macroscopic fundamental properties of the piezoelectric and magnetostrictive materials have been carried out for a long time. However, it is very important to clarify the relationship between the microscopic lattice strain and the magnetic/electrical domain structure, and to control the macroscopic magneto/electrostriction due to the domain motion. The aim of the preset study is to establish the guideline of the materials design converting efficiently small vibration into electrical energy by focusing on BaTiO3, Fe-Ga and Ni-Co-Mn-In. 　　　　　　   Fig. 1 Domain wall in Fe-Ga alloy　　　　　　　　　　　　　　　　Fig. 2 Magnetostriction and domain motion PAGE TOP Frontier Research Institute for Interdisciplinary Sciences About FRIS GreetingsOverviewMissionsOrganizationTenure track system in FRISMaps & DirectionsPublicationAnnual MeetingConsultation Desk Researcher Advanced Interdisciplinary Research DivisionCreative Interdisciplinary Research DivisionManaging & Planning DivisionEndowed Research DivisionsSenior-advisorVisiting Professors / Collaborative ResearchersSpecially-appointedOne-time members Feature TopicsFRIS InterviewsFRIS Hub Meeting Research Programs Open Research ProposalResearch Projects Recruit Open Staff PositionsHandbook for International Researchers FRIS CoRE FRIS CoRE FRIS Fund FRIS Fund for Early-Career Independent Researchers External Links for Early Career Researcher Support Division for Interdisciplinary Advanced Research and Education (DIARE) Ensemble Project for Early Career Researchers Support Program for the Article Processing Charge webmail LINK Copyrights © Frontier Research Institute for Interdisciplinary Sciences, Tohoku University All rights reserved. no cache