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.