磁場(chǎng)下稀土-鐵族一維納米非晶合金的電化學(xué)生長(zhǎng)及磁性研究.pdf

1、中山大學(xué)碩士學(xué)位論文磁場(chǎng)下稀土鐵族一維納米非晶合金的電化學(xué)生長(zhǎng)及磁性研究姓名：張旺生申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：物理化學(xué)指導(dǎo)教師：劉鵬20080525中山火學(xué)碩士學(xué)位論文ABSTRACTRafcearth—iro羔l磬oupamorphousalloysareexcellent凡nctionalmalerials甜ldcanbeappliedinmanyfieldsoweVer，therearefewreportsonthesynthesi

2、s撇dcharacterizationofl—Dnano—structured鋤。啦housalloys，especiallytherareeartllalloys。ln攮is蘸sse雉a主io玨west聰yt魏eelee鏹)ckmie蠢p印af臻io強(qiáng)QfG玉Co，Sm—Co，Ho—CoandEr_NiCo1一Dnanostructured鋤。印housalloys(1)’l淑eeleet￡‘oehelniealbehaviorofG

3、d(1lI)，Co(11)，Sm(1lI)，壬王o(111)，Ni(1薹)andEr(III)iss硼iedinureaacetamidelowtemperaturemoltensaltsunderthemagneticfield。TheresultsofcyclicVolt鋤me內(nèi)眵showthattheelectroreductionofCo(II)andNi(11)isimVersibleinonestep弧erareealthi

4、onsofGd(111)，Sm(I疆)，Ho(III)andE“III)cannotbereducedinthissystemTheRE—IGalloysofGdCo，S藏卜eo，Ho—eoa疆蓮ErjNi—C◇alloyse雒bep糟p￡lfedbyi￡堪ueedeodepositio鼗。(2)ThecathodicpotentialsofmetalionsshiRednegativelyandtheirreductionc溯曙nts

5、inereaSedwimthei∽忿aSe0f搬emagnetie鑫elds拄en舀h(3)GdCo，HoConanorods，SmConanowiresa11dErNi—Conanobelts、verepreparedbypotentioSticelectrodepositionundermagneticfieldTheresultsofSEMandTEMindieatem雒t董letypicalleng氆ofGdCo，Ho—eon黻

6、orodsafcmore礅黻530nmandtheirdiameters2urel50nmThetypicallen群hsofthenanowiresexceedl。2鎏撒強(qiáng)d專(zhuān)量磚di穰lele醛of囂躲owi愆sa糟曲。越33默l。Tk移西e越le臻蓼bof搬enanobeltsaremorothan280nmandtheirdiametersareabout55nm(4)A舭rannealedtheireompositionsa您

7、chafactefiZedasC05Gd，C05SmandC03HoButtheE卜NiCoa重loymay∞m兩sedi虢rentalloycompounds，includingC07Er2，Nil7Er2(5)弧eexte攢almag黼tic蠡el蓮appledd擻ingt&electfodepos猿。糕i埔uences協(xié)emagneticpropertiesofthealloyssigni6cantlyThecoercivefor

8、ces腹，remant搬ag玨e￡iz懿ion煦ands綴髓tion激a咎etizati◇n磊叁ofe05(避鞭de05Sm越loysprepauredundermagneticfieldincreaseseVidently，comparedwiththatoftheaIloysproduced諏thoutmagneticfieldTheVa王uesof手毛A淼and艇iofHoC03alloysincreaSeslightly稚1eV