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1、MR40CH07-SrinivasanARI25May201019:0MagnetoelectricCompositesG.SrinivasanDepartmentofPhysics,OaklandUniversity,Rochester,Michigan48309;email:Srinivas@oakland.eduAnnu.Rev.Mater.Res.2010.40:153–78KeyWordsFirstpublishedonlineasaReviewinAdvanceonferromagnetic,ferroelectric,magnet
2、ostrictive,piezoelectric,February16,2010electromechanicalresonance,ferromagneticresonanceTheAnnualReviewofMaterialsResearchisonlineatbyStevensInstituteofTechnologyon01/30/14.Forpersonaluseonly.matsci.annualreviews.orgAbstractThisarticle’sdoi:Inacompositeofmagnetostrictiveand
3、piezoelectricphases,mechanicalAnnu.Rev.Mater.Res.2010.40:153-178.Downloadedfromwww.annualreviews.org10.1146/annurev-matsci-070909-104459strainmediatesmagnetoelectric(ME)couplingbetweenthemagneticandCopyrightc2010byAnnualReviews.theelectricsubsystems.Thisreviewdiscussesrecen
4、tadvancesinthephysicsAllrightsreservedofMEinteractionsinlayeredcompositesandnanostructuresandpoten-1531-7331/10/0804-0153$20.00tialdeviceapplications.TheMEphenomenaofimportancearegiantlow-frequencyinteractionsandcouplingwhentheelectricand/orthemagneticsubsystemsshowresonance
5、,includingelectromechanicalresonance(EMR)inthepiezoelectricphase,ferromagneticresonance(FMR)inthemagneticphase,andmagnetoacousticresonanceattheoverlapofEMRandFMR.Potentialdeviceapplicationsforthecompositesaremagnetic-fieldsensors,dualelectric-field-andmagnetic-field-tunablemicr
6、owaveandmillimeter-wavedevices,andminiatureantennas.153MR40CH07-SrinivasanARI25May201019:0INTRODUCTIONThemagnetoelectric(ME)effectisdefinedasthedielectricpolarizationofamaterialinanappliedmagneticfieldorasaninducedmagnetizationinanexternalelectricfield(1).Thereareveryfewsingle-
7、phaseMEmaterials,andmostofthemshowveryweakMEcouplingatroomtemperature(2–6).Compositesareofinterestfortheengineeringofmaterialswitheitherdesiredornewchar-acteristicsthatareabsentinsingle-phasematerials.Inacompositeconsistingofmagnetostrictiveandpiezoelectricphases,theMEeffect
8、istheresultofaproductproperty,i.e.,mechanicalde-formationbecauseofmagnetost
