Effect of cobalt doping concentration on the structural and magnetic properties of Fe3O4

被引：12
|
作者：
Tripathy, D
Adeyeye, AO
Piramanayagam, SN
Mah, CS
Gao, XY
Wee, ATS
机构：
[1] NUS, Dept Elect & Comp Engn, Informat Storage Mat Lab, Singapore 117576, Singapore
[2] Data Storage Inst, Singapore 117608, Singapore
[3] Natl Univ Singapore, Dept Phys, Singapore 117542, Singapore
来源：
THIN SOLID FILMS | 2006年 / 505卷 / 1-2期
关键词：
half metals; Fe3O4; Co doping;
D O I：
10.1016/j.tsf.2005.10.036
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this work, we investigate the effects of cobalt doping on the structural, magnetic and transport properties of half metallic Fe3O4 films fabricated on MgO (100) substrates by co-sputtering. The doped films exhibit a highly broadened metal-insulator Verwey transition as compared to that of undoped Fe3O4 films. The magnetic and transport properties of the doped films are markedly sensitive to the Co doping concentration; films with high Co doping exhibit almost negligible coercivity at room temperature. Magnetoresistance (MR) curves show linear magnetic field dependence for the undoped films, while a reduction in MR and departure from linear field dependence is observed for Co-doped films. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：45 / 49
页数：5
相关论文
共 50 条
  • [1] Au doping effect on the electrical and magnetic properties of Fe3O4 nanoparticles
    Mahmood, Asif
    Ramay, Shahid Mahmood
    Al-Zaghayer, Yousef S.
    AlHazaa, A. N.
    Al Masary, Waheed A.
    Atiq, Shahid
    [J]. MODERN PHYSICS LETTERS B, 2015, 29 (33):
  • [2] An investigation on the impact of Al doping on the structural and magnetic properties of Fe3O4 nanoparticles
    Ehsani, M. H.
    Esmaeili, S.
    Aghazadeh, M.
    Kameli, P.
    Tehrani, F. Shariatmadar
    Karimzadeh, Isa
    [J]. APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2019, 125 (04):
  • [3] An investigation on the impact of Al doping on the structural and magnetic properties of Fe3O4 nanoparticles
    M. H. Ehsani
    S. Esmaeili
    M. Aghazadeh
    P. Kameli
    F. Shariatmadar Tehrani
    Isa Karimzadeh
    [J]. Applied Physics A, 2019, 125
  • [4] Structural and magnetic properties of Fe3O4 doped zirconia
    Bashir, Mahwish
    Riaz, Saira
    Farooq, Muhammad
    Butt, Anum
    Naseem, Shahzad
    [J]. MATERIALS TODAY-PROCEEDINGS, 2015, 2 (10) : 5611 - 5618
  • [5] Effect of ferrofluid concentration on electrical and magnetic properties of the Fe3O4/PANI nanocomposites
    Alam, Javed
    Riaz, Ufana
    Ahmad, Sharif
    [J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2007, 314 (02) : 93 - 99
  • [6] Structural, magnetic, and transport properties of Fe3O4/Si(111) and Fe3O4/Si(001)
    Boothman, Catherine
    Sanchez, Ana M.
    van Dijken, Sebastiaan
    [J]. JOURNAL OF APPLIED PHYSICS, 2007, 101 (12)
  • [7] Effect of Cysteine Substitutions on the Structural and Magnetic Properties of Fe3O4–Cysteine/RGO and Fe3O4/RGO–Cysteine Nanocomposites
    Hajar Sahebalzamani
    Kheirollah Mehrani
    Hamid Reza Madaah Hosseini
    Karim Zare
    [J]. Journal of Superconductivity and Novel Magnetism, 2019, 32 : 1299 - 1306
  • [8] Effect of nickel doping on structural and magneto-optical properties of Fe3O4 ferrofluids
    Xavier, P. A. Francis
    Nair, Swapna S.
    Anantharaman, M. R.
    [J]. MATERIALS TODAY-PROCEEDINGS, 2020, 25 : 218 - 223
  • [9] Effect of Carbon Shell on the Structural and Magnetic Properties of Fe3O4 Superparamagnetic Nanoparticles
    A. Jafari
    K. Boustani
    S. Farjami Shayesteh
    [J]. Journal of Superconductivity and Novel Magnetism, 2014, 27 : 187 - 194
  • [10] Effect of synthesis route on the structural, optical and magnetic properties of Fe3O4 nanoparticles
    Kulkarni, Sachnin A.
    Sawadh, P. S.
    Palei, Prakash K.
    Kokate, Kiran K.
    [J]. CERAMICS INTERNATIONAL, 2014, 40 (01) : 1945 - 1949
12345