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化化化化化 化化化化化 ( 磁磁磁磁磁磁磁 ) 1

化學與磁性 ( 磁性特性與應用 )

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化學與磁性 ( 磁性特性與應用 ). 磁性基本特性 磁性奈米線應用. 化碩一 杜怡君 R97223125. 磁性物質. 順磁性. 反鐵磁性. 反磁性. 陶鐵磁性. 鐵磁性. C. D. B. E. A. G. F. 磁滯曲線. 磁滯曲線. 磁滯曲線. 軟磁: 軟磁材料是指容易磁化與去磁的材料。因此材料的磁滯曲線必須很窄。 ( 磁滯損失 小、 渦流損失 小、 高導磁率 、 高飽和磁率 ) 硬磁: 硬磁材料在做過磁化處理後,磁性不易消失,可用來做為永久磁鐵使用。 ( 抗磁力 大 、殘存磁通密度 ). - PowerPoint PPT Presentation

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  • R97223125*/65

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  • --- (magnetic anisotropy)

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  • ()1898Poulsen

    ()MRAM */65

  • () HcMs*/65

  • B95203068*/65

  • CVD Ultrahigh Vacuum CVD, UHVCVDPlasma-Enhanced CVD, PECVDMetalorganic CVD, MOCVD */65

  • CVD:

    */65

  • : */65

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  • thermodynamically stableisotropic :water-in-oil, W/Ooil-in-water, O/W

    */65

  • : :C6 ~ C8:AOTCTABTriton X : HLB (hydrophilic-lipophilic balance

    */65

  • :

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  • :: */65

  • R97223124*/65

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  • - (Sol-Gel) (sol) 1~100 nm (gel)

    pH

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  • (Fe3O4 ) ( 80C 30 ) Fe 2+ +2Fe 3+ + 8OH- Fe3O4 +4H2O1:Fe3O4*/65

  • */65

  • (autoclave)

    pH */65

  • (NaBH4 , NaBEt3H , LiBet3H) (N2H4 )*/65

  • */65

  • R97223202*/65

  • Ochratoxin A (OTA)

    J. Chromatography A. 2007, 1159,250255 */65

  • Fe3O4@HSA */65

  • Fe3O4 Fe3O4@EDAS */65

  • Fe3O4@EDAS Fe3O4@HSA */65

  • OTA :10-8M*/65

  • 0.1189 mg/L0.1385 mg/L0.16 mg/L0.09808 mg/LOTA2%32%14%18%*/65

  • D97223133*/65

  • (superparamagnetic iron oxide, SPIO)[1] (SPIO)

    2-3-1 () (MRI) (ablation agent) () [1] Hartman, K. B.; Wilson, L. J.; Rosenblum, M. G. Molecular Diagnosis & Therapy, 2008, 12, 1.*/65

  • 2-3-2 [2] [2] Plank, C. Trends in Biotechnology, 2008, 26(2), 59.2-3-3 2-3-1 */65

    CoatingspaceMetabolic timeanionHuman1 hrStarchHuman24-36 hrsStarchMice2-3 hrsSPIOsHuman7 days

  • [1] [1] Jin, Z.; Hong, B.; Kakar, S. S.,Kang K. A. Advances in Experimental Medicine and Biology, 2008, 614, 275.2-3-4 (a)(b)0.1 wt(c)0.1 wt1 cmNIR-TRS788 nm100 M Hz2-3-5 --(a)(b)()(c) (hymatoxylin) (eosin)(d)(MRTI)abc*/65

  • [1] [1] Tang, Q. S.; Zhang, D. S.; Cong, X. M.; Wan, M. L.; Jin, L. Q. Biomaterials, 2008, 29(17), 2673.2-3-6 -2-3-7 P1730OR ()-SMMC-7721 ()*/65

  • */65

  • B95203017*/65

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  • ()*/65

  • */65

  • */65

  • */65

  • MFeCoMnZn */65

  • */65

  • 2003XLRMagnetic Ride Control*/65

  • EuNbO2N

    (Magnetoresponses) D97223103*/65

  • Ferroelectric and Magnetic MaterialsYMnO3 EuNbO2N (a = 4.03215(2) , c = 4.04411(3) ) Perovskite */65

  • */65

  • */65

  • ConclusionsEuNbO2N */65

  • B95203052*/65

  • MFe2O4 MOFe2O3*/65

  • MFe12O19 MO6Fe2O3*/65

  • */65

  • */65

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  • Walkman B95203020*/65

  • !!!MP3--

    neodymiumgauss */65

  • ?? */65

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  • MP3??

    AMFM??

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  • Thanks for your attention!*/65

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  • PECVD

    FePtferrocene for Fe, (methylcyclopentadienyl)trimethyl platinum for Pt

    Jpn. J. Appl. Phys. 2006, 45,83028307

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  • :: transmission electron microscope: magneto-optical Kerr effect: :

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  • Plasma discharge duration vs. particle size and densityTime density particle size

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  • Reaction time and temperature vs. hysteresis loopTime loop hard magnet Temperature loop hard magnet

    30(a) 750, (b) 650, (c) 550

    : (650)(a) 8, (b) 4, (c) 2*/65

  • Angew. Chem. 2007, 46, 1222 1244 4~15 nmMnFe2O4

    Mn(NO3)2 Fe(NO3)3 toluene()Surfactant: sodium dodecylbenzenesulfonate (NaDBS) toluene: /toluene = 5/100, ~8 nm particle

    */65

  • 4~15nm MnFe2O4 superparamagnetic

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