低居里溫度磁熱鐵氧體材料的研制.pdf

1、同濟大學(xué)碩士學(xué)位論文低居里溫度磁熱鐵氧體材料的研制姓名：蔡小軍申請學(xué)位級別：碩士專業(yè)：材料學(xué)指導(dǎo)教師：吳知方20040301低居里溫度磁熱鐵氧體材料的研制AbstractAsanewwayfortreatingcancerhyperthermiaisnOWconsideredapromisingmethodandisstudiedwidelybymanyscientistsThesmartthermoseedsusedfortheadv

2、ancedhyperthermiamustbeaspecialkindofmagneticmatedalthathasalowCurietemperatureandthermomagneticeffectinacertainconditionInotherwords，itwillgeneratewellregulatedheatwhenamagneticfieldisappliedexternally碭eobjectiveofthisr

3、esearchiStodevelopthiskindofthermoseedsusedforhyperthermiaFerriteCanmeettherequirementofthermoseedsBaseonthereportsfromothersMn—ZnferdteWasselectedasthiskindofthremoseedsTechnicalparameterofpreparationofMn—Znferritepowde

4、rbydrymethodiSstudied；AfteradjustingofcontentofZnO、Fe203intheferritecomposition，theferdtes、析ⅡldifferentmagnetismpropertyweremadeTheCurietemperatureofthesefemtesamplesWasseparatelymeasuredbyusingtheinductancemethod，thecoo

5、lingmethoddesignedbyourselves，theweightlo_op_fromtheThermalGravitationalAnalysis(TGA)apparatusThemagnetichystersisloopofsomeferritesampleWasmeasuredThethermomagneticeffectofsamplesWasmeasuredunderdifferentsurroundings、ma

6、gneticfieldfrequencyandstrengthInan)addition，inordertointervenetheseferritepowdersintohumanbodysafelythebiocompatibilityofferdtesamplesthatcontains5wt％C棚P04wasprimarilyinvestigatedTheresultsofexperimentsshowthatthesample

7、swithaCurietemperaturelowerthan60℃andthermomagneticeffectCanbepreparedTheadvantagesofinductancemethodandcoolingmethodaresimple窨ui：onvenientTherelationshipsofthecompositionandtheCurictemperatureofthesesamplesareinaccordwi

8、ththosereportedbyothersCombining、Ⅳitllthemagnetichystersisloop，itisobviousthatsamplesgenerateheatunderthealternativemagneticfield，andthethermomagnetieeffectincreaseswiththeincreaseofthefrequencyandthestrengthTheX—raydiff

9、ractionanalysisshowsthatthereisthehydroxyapatite(HAP)inthesamplescontaining5wt％CaHP04WhelltherearemoreC枷P04addedinthesamples，itisexpectedtoprepareferritematerialswithbetterbiocompatibilityKeywords：Hyperthermiacancermagne