Large scale growth and magnetic properties of Fe and Fe{sub 3}O{sub 4} nanowires

doi:10.1063/1.2172208

Title: Large scale growth and magnetic properties of Fe and Fe{sub 3}O{sub 4} nanowires

Full Record
Similar

Abstract

Fe and Fe{sub 3}O{sub 4} nanowires have been synthesized by thermal decomposition of Fe(CO){sub 5}, followed by heat treatments. The Fe wires are formed through the aggregation of nanoparticles generated by decomposition of Fe(CO){sub 5}. A core-shell structure with an iron oxide shell and Fe core is observed for the as-prepared Fe wires. Annealing in air leads to the formation of Fe{sub 2}O{sub 3}/Fe{sub 3}O{sub 4} wires, which after heat treatment in a N{sub 2}/alcohol atmosphere form Fe{sub 3}O{sub 4} wires with a sharp Verwey [Nature (London) 144, 327 (1939)] transition at 125 K. The Fe{sub 3}O{sub 4} wires have coercivities of 261 and 735 Oe along the wire axis at RT and 5 K, respectively. The large increase of coercivity at 5 K as compared to RT is due to the increase of anisotropy resulting from the Verwey transition.

Authors:

Yang, J. B.; Xu, H.; You, S. X.; Zhou, X. D.; Wang, C. S.; Yelon, W. B.; James, W. J. ^[1]; Physics Department, National University of Singapore, Singapore 117542 ^[2]; Graduate Center for Materials Research, University of Missouri-Rolla, Rolla, Missouri 65409 ^[3]; School of Physics, Peking University, Beijing 100871 ^[4]; Graduate Center for Materials Research, University of Missouri-Rolla, Rolla, Missouri 65409 ^[3]

Graduate Center for Materials Research, University of Missouri-Rolla, Rolla, Missouri 65409 (United States)
(Singapore)
(United States)
(China)

Publication Date:: Sat Apr 15 00:00:00 EDT 2006

OSTI Identifier:: 20788148

Resource Type:: Journal Article

Resource Relation:: Journal Name: Journal of Applied Physics; Journal Volume: 99; Journal Issue: 8; Other Information: DOI: 10.1063/1.2172208; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; AFTER-HEAT; AGGLOMERATION; AIR; ALCOHOLS; ANISOTROPY; ANNEALING; ATMOSPHERES; COERCIVE FORCE; CRYSTAL GROWTH; FERROMAGNETIC MATERIALS; IRON; IRON OXIDES; MAGNETIC PROPERTIES; PARTICLES; PYROLYSIS; QUANTUM WIRES; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0000-0013 K; TEMPERATURE RANGE 0065-0273 K

Citation Formats


                    Yang, J. B., Xu, H., You, S. X., Zhou, X. D., Wang, C. S., Yelon, W. B., James, W. J., Physics Department, National University of Singapore, Singapore 117542, Graduate Center for Materials Research, University of Missouri-Rolla, Rolla, Missouri 65409, School of Physics, Peking University, Beijing 100871, and Graduate Center for Materials Research, University of Missouri-Rolla, Rolla, Missouri 65409. Large scale growth and magnetic properties of Fe and Fe{sub 3}O{sub 4} nanowires.  United States: N. p., 2006. 
        Web.  doi:10.1063/1.2172208.

Copy to clipboard


                    Yang, J. B., Xu, H., You, S. X., Zhou, X. D., Wang, C. S., Yelon, W. B., James, W. J., Physics Department, National University of Singapore, Singapore 117542, Graduate Center for Materials Research, University of Missouri-Rolla, Rolla, Missouri 65409, School of Physics, Peking University, Beijing 100871, & Graduate Center for Materials Research, University of Missouri-Rolla, Rolla, Missouri 65409. Large scale growth and magnetic properties of Fe and Fe{sub 3}O{sub 4} nanowires.  United States.  doi:10.1063/1.2172208.

Copy to clipboard


                    Yang, J. B., Xu, H., You, S. X., Zhou, X. D., Wang, C. S., Yelon, W. B., James, W. J., Physics Department, National University of Singapore, Singapore 117542, Graduate Center for Materials Research, University of Missouri-Rolla, Rolla, Missouri 65409, School of Physics, Peking University, Beijing 100871, and Graduate Center for Materials Research, University of Missouri-Rolla, Rolla, Missouri 65409. Sat .  
        "Large scale growth and magnetic properties of Fe and Fe{sub 3}O{sub 4} nanowires".  United States.  
        doi:10.1063/1.2172208.

Copy to clipboard


                    
@article{osti_20788148,

  title        = {Large scale growth and magnetic properties of Fe and Fe{sub 3}O{sub 4} nanowires},

  author       = {Yang, J. B. and Xu, H. and You, S. X. and Zhou, X. D. and Wang, C. S. and Yelon, W. B. and James, W. J. and Physics Department, National University of Singapore, Singapore 117542 and Graduate Center for Materials Research, University of Missouri-Rolla, Rolla, Missouri 65409 and School of Physics, Peking University, Beijing 100871 and Graduate Center for Materials Research, University of Missouri-Rolla, Rolla, Missouri 65409},

  abstractNote = {Fe and Fe{sub 3}O{sub 4} nanowires have been synthesized by thermal decomposition of Fe(CO){sub 5}, followed by heat treatments. The Fe wires are formed through the aggregation of nanoparticles generated by decomposition of Fe(CO){sub 5}. A core-shell structure with an iron oxide shell and Fe core is observed for the as-prepared Fe wires. Annealing in air leads to the formation of Fe{sub 2}O{sub 3}/Fe{sub 3}O{sub 4} wires, which after heat treatment in a N{sub 2}/alcohol atmosphere form Fe{sub 3}O{sub 4} wires with a sharp Verwey [Nature (London) 144, 327 (1939)] transition at 125 K. The Fe{sub 3}O{sub 4} wires have coercivities of 261 and 735 Oe along the wire axis at RT and 5 K, respectively. The large increase of coercivity at 5 K as compared to RT is due to the increase of anisotropy resulting from the Verwey transition.},

  doi          = {10.1063/1.2172208},

  journal      = {Journal of Applied Physics},

  number       = 8,

  volume       = 99,

  place        = {United States},

  year         = {Sat Apr 15 00:00:00 EDT 2006},

  month        = {Sat Apr 15 00:00:00 EDT 2006}

}

Copy to clipboard

Journal Article:

DOI: 10.1063/1.2172208

Other availability

Find in Google Scholar

Search WorldCat to find libraries that may hold this journal

Save / Share:

Export Metadata

Save to My Library

Long Fe{sub 3}O{sub 4} nanowires decorated by CdTe quantum dots: Synthesis and magnetic-optical properties

Lan Xianmei ; Cao Xuebo ; Qian Wenhu ; ... - Journal of Solid State Chemistry

This work describes the synthesis and magnetic-optical properties of Fe{sub 3}O{sub 4} nanowires decorated by CdTe quantum dots. The composite nanowires with a length of 1 {mu}m and an average diameter of 23{+-}3 nm were prepared in a high yield through the preferential growth of Fe{sub 3}O{sub 4} on CdTe quantum dots using ethylenediamine as template. Their growth mechanism was discussed based on the results of control experiments. Studies on the optical and magnetic properties of the composite nanowires reveal that they assume not only yellow-green emission feature but also room temperature ferromagnetism. - Graphical abstract: The long and flexiblemore »« less
Hydrothermal synthesis, structure, and sorption properties of the new microporous ferric molybdenum phosphates [(CH[sub 3])[sub 4]N][sub 2](NH[sub 4])[sub 2][Fe[sub 2]Mo[sub 12]O[sub 30](H[sub 2]PO[sub 4])[sub 6](HPO[sub 4])[sub 2]][center dot]nH[sub 2]O and [(CH[sub 3])[sub 4]N][sub 2]Na[sub 4][Fe[sub 3]Mo[sub 12]O[sub 30](H[sub x]PO[sub 4])[sub 8]][center dot]nH[sub 2]O

Meyer, L.A. ; Haushalter, R.C. - Inorganic Chemistry; (United States)

The first microporous solids incorporating two octahedrally coordinated transition elements, the phosphates (TMA)[sub 2](NH[sub 4])[sub 2][Fe[sub 2]Mo[sub 12]O[sub 30](H[sub 2]PO[sub 4])[sub 6](HOP[sub 4])[sub 2]][center dot]11H[sub 2]O (1) and (TMA)[sub 2]Na[sub 4][Fe[sub 3]Mo[sub 12]O[sub 30](H[sub x]PO[sub 4])[sub 8]][center dot]16H[sub 2]O (2) (TMA = (CH[sub 3])[sub 4]N[sup +]), have been hydrothermally synthesized and characterized by single-crystal X-ray diffraction and water absorption isotherms. Phosphate 1 is prepared in 94% yield from Na[sub 2]MoO[sub 4], Mo, FeCl[sub 3], (NH[sub 4])[sub 2]HPO[sub 4], (TMA)OH, H[sub 3]PO[sub 4], and H[sub 2]O in a mole ratio of 5:1:1:2:7:16:150 at 200[degrees]C for 64 h, while 2 is synthesizedmore »« less
DOI: 10.1021/ic00061a011
Magnetic properties of quadruple perovskite solid solutions Ca{sub 1–x}Y{sub x}Cu{sub 3}Fe{sub 4}O{sub 12} and Y{sub 1–y}Ce{sub x}Cu{sub 3}Fe{sub 4}O{sub 12}

Murakami, Makoto ; Mori, Shigeo ; Yamada, Ikuya, E-mail: i-yamada@21c.osakafu-u.ac.jp - AIP Conference Proceedings

Magnetic properties of the quadruple perovskite solid solutions Ca{sub 1–x}Y{sub x}Cu{sub 3}Fe{sub 4}O{sub 12} and Y{sub 1–y}Ce{sub y}Cu{sub 3}Fe{sub 4}O{sub 12} are investigated. Ca{sub 1–x}Y{sub x}Cu{sub 3}Fe{sub 4}O{sub 12} shows continuous increase in the ferromagnetic transition temperature as x increases. Y{sub 1–y}Ce{sub y}Cu{sub 3}Fe{sub 4}O{sub 12} exhibits a ferromagnetic-antiferromagnetic transition in the vicinity of y = 0.5. These observations demonstrate the electron doping effect on magnetic properties of charge-disproportionated ACu{sub 3}Fe{sub 4}O{sub 12} phases.
DOI: 10.1063/1.4961340
Epitaxial growth and magnetic properties of Fe{sub 3}O{sub 4} films on TiN buffered Si(001), Si(110), and Si(111) substrates

Xiang Hua ; Shi Fengyuan ; Voyles, Paul M. ; ... - Applied Physics Letters

Epitaxial Fe{sub 3}O{sub 4} thin films were grown on TiN buffered Si(001), Si(110), and Si(111) substrates by dc reactive sputtering deposition. Both Fe{sub 3}O{sub 4} films and TiN buffer are fully epitaxial when grown at substrate temperatures above 150 deg. C, with textured single phase Fe{sub 3}O{sub 4} resulting from room temperature growth. The initial sputtered Fe{sub 3}O{sub 4} formed nuclei islands and then coalesced to epitaxial columnar grains with increasing film thickness. The magnetization decreases and the coercive field increases with decreasing film thickness. There is no in-plane magnetic anisotropy of epitaxial Fe{sub 3}O{sub 4}(001) on Si(001) but Fe{submore »« less
DOI: 10.1063/1.3484278
Growth temperature effect on the structural and magnetic properties of Fe{sub 3}O{sub 4} films grown by the self-template method

Takahashi, R., E-mail: rtaka@issp.u-tokyo.ac.jp ; Misumi, H. ; Lippmaa, M. - Journal of Applied Physics

We have investigated the effect of growth temperature on the structure, surface morphology, and magnetic properties of Fe{sub 3}O{sub 4} thin films grown on SrTiO{sub 3}(001) substrates by a self-template method. To eliminate the intermixing of (001) and (111) orientations that usually occurs in spinel films grown on perovskite substrates, a thin self-template layer of (001)-oriented Fe{sub 3}O{sub 4} was deposited on a SrTiO{sub 3}(001) substrate at 400 °C prior to the main film growth at temperatures of up to 1100 °C. Increasing the growth temperature from 400 °C to 1100 °C resulted in greatly improved crystallinity of the Fe{sub 3}O{sub 4} thin films,more »« less
DOI: 10.1063/1.4890510