简介：Themetal-organicchemicalvapordeposition(MOCVD)techniqueisapromisingprocessforhigh-temperaturesuperconductorYBa2Cu3O7-δ(YBCO)preparation.Inthistechnique,itisachallengetoobtainbariumprecursorswithhighvolatility.Inaddition,thepurity,evaporationcharacteristics,andthermostabilityofadoptedprecursorsinwholeprocesswilldecidethequalityandreproducibleresultsofYBCOfilm.Inthepresentreport,bis(2,2,6,6-tetramethyl-3,5-heptanedionato)barium(Ⅱ)(Ba(TMHD)2)wassynthesized,anditsstructurewasidentifiedbyFTIR,1HNMR,13CNMR,andESI-MSspectroscopy.Subsequently,thethermalpropertiesandthekineticsofdecompositionweresystematicallyinvestigatedbynonisothermalthermogravimetricanalysismethods.BasedontheaverageapparentactivationenergyevaluatedbytheOzawa,Kissinger,andFriedmanmethods,thevolatilizationprocesswasdiscussed,andallresultsshowthatBa(TMHD)2isunstableandhighlysensitivetothechangeoftemperatureduringthewholeevaporationprocess.Therefore,itisveryimportanttochoosesuitablevolatilizationtechnologyandconditionsforavoidingBa(TMHD)2break-down(orthermalaging)duringMOCVDprocess.Subsequently,thepossibleconversionfunctionisestimatedthroughtheCoats-Redfernmethodtocharacterizetheevaporationpatternsandfollowsaphaseboundaryreactionmechanismbythecontractingsurfaceequationwithaverageactivationenergyof118.7kJ.mol-1.