Dual behaviorsofmagneticCoxFe۱x (۰rxr۱) nanowiresembedded in nanoporouswithdifferentdiameters

Authorsعبد العلی رمضانی-محمد الماسی کاشی-شهرزاد قنبری جهرمی-فاطمه اسحقی
JournalJ MAGN MAGN MATER
Paper TypeFull Paper
Published At۲۰۱۲-۵-۰۱
Journal GradeISI
Journal TypeTypographic
Journal CountryIran, Islamic Republic Of
Journal IndexISI ,SCOPUS

Abstract

CoxFe1x nanowirearrayswithvariousdiametersanddifferentcompositionwerefabricatedbyac electrodepositionusingporousaluminatemplate.Coercivityalongtheeasyaxisreachestoamaximum at 2330Oe,forCoxFe1x nanowirescontainingabout40at%Co.Thecrystallinestructureofthe nanowireswasconcentration-independentandshowsabccstructure.Thecriticaldiameterfor transitionfromcoherentrotationtocurlingmodeis35nmforCoFecontaininglessthan40at%Co while itis30nmforthosewithmorethan40at%Co.OptimizingthemagneticpropertiesofCoFewith differentCocontentwasseentobedependentonthediameterofnanowires.For25nmdiameter,the optimumwasshownbelow50at%Cowhileitwasseenabove50at%fornanowireswith50nm diameter.Theangulardependenceofthecoercivitywithnanowiresdiameterwerealsostudied.