Hollow spheres to nanocups:: Tuning the morphology and magnetic properties of single-crystalline α-Fe2O3 nanostructures

被引:85
作者
Jagadeesan, Dinesh [1 ,2 ]
Mansoori, Uzma [1 ,2 ]
Mandal, Pranab [3 ]
Sundaresan, Athinarayanan [3 ]
Eswaramoorthy, Muthusamy [1 ,2 ]
机构
[1] Jawaharlal Nehru Ctr Adv Sci Res, Nanomat & Catalysis Lab, Chem & Phys Mat Unit, Bangalore 560064, Karnataka, India
[2] Jawaharlal Nehru Ctr Adv Sci Res, DST Unit Nanosci, Bangalore 560064, Karnataka, India
[3] Jawaharlal Nehru Ctr Adv Sci Res, Magnetism & Superconduct Lab, Chem & Phys Mat Unit, Bangalore 560064, Karnataka, India
关键词
crystal engineering; hematite; magnetic properties; nanostructures; template synthesis;
D O I
10.1002/anie.200802626
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A bottom-up approach has been used to tune the morphology of single-crystalline hematite from hollow spheres to nanocups. The mechanism involves the formation of nanocups through buckling of the spheres, similar to a deflated ball (see picture). As the shape changes, there is a drastic change in magnetic properties. © 2008 Wiley-VCH Verlag GmbH & Co. KGaA.
引用
收藏
页码:7685 / 7688
页数:4
相关论文
共 39 条
  • [1] CAPILLARITY-INDUCED FILLING OF CARBON NANOTUBES
    AJAYAN, PM
    IIJIMA, S
    [J]. NATURE, 1993, 361 (6410) : 333 - 334
  • [2] [Anonymous], 2004, ANGEW CHEM-GER EDIT
  • [3] Magnetic properties of hematite nanoparticles
    Bodker, F
    Hansen, MF
    Koch, CB
    Lefmann, K
    Morup, S
    [J]. PHYSICAL REVIEW B, 2000, 61 (10) : 6826 - 6838
  • [4] Single-crystal dendritic micro-pines of magnetic α-Fe2O3:: Large-scale synthesis, formation mechanism, and properties
    Cao, MH
    Liu, TF
    Gao, S
    Sun, GB
    Wu, XL
    Hu, CW
    Wang, ZL
    [J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2005, 44 (27) : 4197 - 4201
  • [5] Systematic study of the growth of aligned arrays of α-Fe2O3 and Fe3O4 nanowires by a vapor-solid process
    Chueh, Yu-Lun
    Lai, Ming-Wei
    Liang, Jia-Qi
    Chou, Li-Jen
    Wang, Zhong Lin
    [J]. ADVANCED FUNCTIONAL MATERIALS, 2006, 16 (17) : 2243 - 2251
  • [6] Fabrication of silica nanocomposite-cups using electrospraying
    Deotare, PB
    Kameoka, J
    [J]. NANOTECHNOLOGY, 2006, 17 (05) : 1380 - 1383
  • [7] Dumestre F, 2002, ANGEW CHEM INT EDIT, V41, P4286, DOI 10.1002/1521-3773(20021115)41:22<4286::AID-ANIE4286>3.0.CO
  • [8] 2-M
  • [9] Dumestre F., 2002, ANGEW CHEM, V114, P4462, DOI DOI 10.1038/NMAT1251
  • [10] ESWARAMOORTHY M, 2002, ADV MATER, V14, P969