简介：TransitionMetal周一宣布，已经完成对第一镍业前期勘探和开发资产的收购，此次收购包括约1100公顷租赁和专利挖掘和地表使用权。

简介：OpticalabsorptionandemissionintensitiesofNd3+ioninKLu(WO4)2crystalwereinvestigated.BasedontheJudd-Offelttheory,wecalculatedthefollowingspectralparameters:phenomenologicalintensityparametersΩ2=5.567×10–20,Ω4=3.597×10–20,andΩ6=3.800×10–20cm2.Theradiativelifetimeoflevels4F3/2was182.58μs.Thefluorescencebranchingratioforthetransition4F3/2→4I11/2was46.98%.Inaddition,theradiativetransitionprobabilitiesAJ,J’,oscillatorstrengthsPJ,J’andthevaluesofinte...

简介：Byusingsurfaceeffects（Augerelectronspectroscopy,X-rayphotoelectronspectroscopy,polarKerreffect）andvolumeeffects（magnetization,torquecurve）thephysicalprocessofsurfaceoxidationofrareearth-transitionmetalamorphousmagneto-opticalthinfilmswasstudiedinthispaper.Therareearthelementsoxidizepreferentiallyandrichatthefilmsurface,andthetransitionmetalsdepleteinoxidationlayer.Fe2O3inthesurfaceoxidationlayercontributestotheplanarmagnetization,andtherebytheanomalouspeakappearsnear180°onthetorquecurvesandtheamplitudeofthepeaksisrelatedtothedepthofsurfaceoxidationlayers.Theironbondstooxygeneasierthanthecobolt.RE-Comagneto-optiealthinfilmshavegoodpropertiesofresistancetooxidationandhumidity.