简介：钡铁酸盐micro/nano纤维成功地经由由把dimethylformamide(DMF)用作溶剂的静电的旋转被准备，并且poly乙烯基pyrrolidone(PVP)作为旋转auxiliaries。结构，形态学，和磁性上的锶替换的效果被扫描电子调查显微镜(SEM)，X光检查衍射分析(XRD)，和颤动取样磁强计(VSM)。样品的XRD模式证实纯钡铁酸盐纤维形式，和Sr替换做主要山峰(110)，(107)，并且(114)稍微搬到右。另外，FE-SEM图象证明代替的纤维能保留的Sr完成含纤维的形态学。而且，当纤维在800点被锻烧时，VSM结果证明浸透磁化能到达56.7emu/g'

简介：(Ni0.81Fe0.19)0.66Cr0.34hasahighresistivityandacrystalstructureclosetothatofNi0.81Fe0.19.TheelectricalandX-raydiffractionmeasurementsprovethatathinNiFeCrseedlayerinducesawell(111)-orientedNi0.81Fe0.19film.Post-annealingtreatmentimprovesthemagneticpropertiesof(Ni0.81Fe0.19)0.66Cr0.34(45A)/Ni0.81Fe0.19(150A)/Ta(55A)thinfilmpreparedunderadepositionfield,whereastheinter-diffu-sionofNiFe/Tadeterioratesthemagnetoresistancepropertiesofthefilm.

简介：ThecompositenanofibersofSrTiO3/SrFe12O19withamolarratioof1:1anddiameterabout120nmwerepreparedbyelectrospinning.Effectsofcalcinationtemperatureontheformation,crystallitesize,morphologyandmagneticpropertywerestudiedbyinfraredspectroscopy,X-raydiffraction,scanningelectronmicroscopyandvibratingsamplemagnetometer.Thebinaryphaseofstrontiumferriteandtitanatewasformedafterbeingcalcinedat900℃for2handthecompositenanofiberswerefabricatedfromnanograinsofSrTiO3about24nmandSrFe12O19around33nm.ThecrystallitesizesforthenanofibersincreasewithincreasingcalcinationtemperatureandtheadditionofSrTiO3hasanobvioussuppressioneffectonSrFe12O19graingrowth.Thespecificsaturationmagnetizationandremanencetendtoincreasewiththecrystallitesize.Withincreasingcalcinationtemperaturefrom900to1050℃,thecoercivityincreasesinitially,achievingamaximumvalueof520.2kA·m-1at950℃,andthenshowsareductiontendency.