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1、NanoSmtcmredMaterials,Vol.12,pp.55-60,1999PergamonElsevierScienceLtdQ1999ActaMetallurrkaInc.PrintedintheUSA.Alltightskserved0965-9773/99/$-seefrontmatterPI1SO9659773(99)00065-3NANOCRYSTALLINF,FeANDFe-RICEIEDFe-NiTHROUGHELECTRODEPOSITIONMichelL.TrudeauEmergingTechnol
2、ogies,Hydra-Quebec,1800Boul.Lionel-Boulet,Varennes,Quebec,Canada,J3X1S1,trndeaum@ireq.caABSTRACT-Thereisaconstantneedfornewsoftermagneticmaterials,especiallywithhighsaturationmoments.Anumberofstudieshaveshownthatbydecreasingtheaveragecrystalsizeofamaterialbelow20nm,
3、itispossibletoreduceitsmagneticlosses.Thiswasclearlydemonstratedinnanostructuredmagneticalloysbasedonthethermalcrystallizationofamorphousribbons.However,thisdemonstrationhasbeenverydiflcultforothernanostructuredmaterials,mainlybecausemostofthemarebasedonpowderproces
4、sing.Thisstudypresentsthesynthesisandpropertiesofnanostructuredmagneticmaterialsproducedbypulsedelectrodeposition.Surprisingly,comparedtoothersynthesistechniques,electrodepositionhasreceivedlittleattentionforproducinglargequantitiesoffullydensenanostructuredmaterial
5、s.InthisworkwedescribesomeoftheelectrodepositionparametersleadingtotheproductionofnanostructuredFeandFe-richedFe-Nialloys.Somemagneticpropertiesobtainedusingavibratingsamplemagnetometerarealsopresented.01999ActaMetallurgicaInc.INTRODUCTIONThefieldofnanostructuredmat
6、erialshasgrownconsiderablyinthelastfifteenyears.Moreandmoreresearchersrealizethatthecontrolofmaterialsstructureonthenanometerscaleisthekeytouniqueproperties.Atthesametime,highthroughputsynthesisprocesseshavebeendeveloped.Itisinterestingtolookbrieflybackatoneareathat
7、was,10yearsago,clearlyatthefarfrontofthepresentnanostrnctnrerevolution.In1988,Yoshizawaetal.[l]presentedastudyonnanocompositemagneticmaterialsproducedbythethermalannealingofamorphousribbons.Theyshowedatthattimethat,throughajudiciouschoiceofthematerialscomposition,it
8、waspossibleduringthermalannealingtofavoranincreaseinthenucleationrateandareductionofthegraingrowth.Thefinalendproductswerenanocompositerib
