Emergent magnetic properties of biphase iron oxide nanorods

被引：5
作者：
Attanayake, S. B. [1 ]
Chanda, A. [1 ]
Das, R. [2 ]
Phan, M. H. [1 ]
Srikanth, H. [1 ]
机构：
[1] Univ S Florida, Dept Phys, Tampa, FL 33620 USA
[2] Phenikaa Univ, Fac Mat Sci & Engn, Hanoi 12116, Vietnam
来源：
AIP ADVANCES | 2022年 / 12卷 / 03期
关键词：
FERRIMAGNETIC/FERROELASTIC DOMAIN INTERACTIONS; VERWEY TRANSITION; LOW-TEMPERATURE; HYPERTHERMIA; FE3O4; COERCIVITY;
D O I：
10.1063/9.0000256
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We report on the magnetic properties of biphase iron oxide nanorods (NRs) consisting of ferrimagnetic Fe3O4 and antiferromagnetic alpha-Fe2O3 phases. Annealing as-prepared NRs at 250 degrees C for 5h, significantly improved the crystallinity of the Fe3O4 phase and enhanced the volume fraction of the alpha-Fe2O3 phase. Magnetometry data consistently reveal these two magnetically distinct phases, which are not in proximity to each other but separated by a region of disordered spins giving rise to enhanced magnetization at low temperatures when the sample was cooled down from 300 K in the presence of a 1T field to 10 K. This phenomenon which is also known as the pinning effect is much more pronounced in the annealed sample, resulting from the increased volume fraction of the alpha-Fe2O3 phase which could strengthen the interfacial spin frustration between these two phases and enhance the density of disordered spins at the interface. (C) 2022 Author(s).
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页数：5
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共 40 条
  • [11] Highly sensitive NO2 gas sensor based on hematite nanoparticles synthesized by sol-gel technique
    Hjiri, M.
    [J]. JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 2020, 31 (06) : 5025 - 5031
  • [12] Phase structure dependence of magnetic behaviour in iron oxide nanorods
    Hu, Hailong
    Yuan, Yuan
    Lim, Sean
    Wang, Chun H.
    [J]. MATERIALS & DESIGN, 2020, 185
  • [13] On the distribution of Verwey transition temperatures in natural magnetites
    Jackson, Mike J.
    Moskowitz, Bruce
    [J]. GEOPHYSICAL JOURNAL INTERNATIONAL, 2021, 224 (02) : 1314 - 1325
  • [14] Jiang C, 2018, SYNTHESIS ASSEMBLY I
  • [15] Ferrimagnetic/ferroelastic domain interactions in magnetite below the Verwey transition. Part I: electron holography and Lorentz microscopy
    Kasama, Takeshi
    Harrison, Richard J.
    Church, Nathan S.
    Nagao, Masahiro
    Feinberg, Joshua M.
    Dunin-Borkowski, Rafal E.
    [J]. PHASE TRANSITIONS, 2013, 86 (01) : 67 - 87
  • [16] Superparamagnetic iron oxide nanoparticles for bio-medical applications
    Kim, DK
    Zhang, Y
    Voit, W
    Kao, KV
    Kehr, J
    Bjelke, B
    Muhammed, M
    [J]. SCRIPTA MATERIALIA, 2001, 44 (8-9) : 1713 - 1717
  • [17] Long-distance spin-transport across the Morin phase transition up to room temperature in ultra-low damping single crystals of the antiferromagnet α-Fe2O3
    Lebrun, R.
    Ross, A.
    Gomonay, O.
    Baltz, V.
    Ebels, U.
    Barra, A. -L.
    Qaiumzadeh, A.
    Brataas, A.
    Sinova, J.
    Klaeui, M.
    [J]. NATURE COMMUNICATIONS, 2020, 11 (01)
  • [18] Iron Oxide with Different Crystal Phases (α- and γ-Fe2O3) in Electroanalysis and Uftrasensitive and Selective Detection of Lead(II): An Advancing Approach Using XPS and EXAFS
    Li, Shan-Shan
    Li, Wen-Juan
    Jiang, Tian-Jia
    Liu, Zhong-Gang
    Chen, Xing
    Cong, Huai-Ping
    Liu, Jin-Huai
    Huang, Yu-Ying
    Li, Li-Na
    Huang, Xing-Jiu
    [J]. ANALYTICAL CHEMISTRY, 2016, 88 (01) : 906 - 914
  • [19] Applications and Potential Toxicity of Magnetic Iron Oxide Nanoparticles
    Liu, Gang
    Gao, Jinhao
    Ai, Hua
    Chen, Xiaoyuan
    [J]. SMALL, 2013, 9 (9-10) : 1533 - 1545
  • [20] Potential Toxicity of Iron Oxide Magnetic Nanoparticles: A Review
    Malhotra, Nemi
    Lee, Jiann-Shing
    Liman, Rhenz Alfred D.
    Ruallo, Johnsy Margotte S.
    Villaflores, Oliver B.
    Ger, Tzong-Rong
    Hsiao, Chung-Der
    [J]. MOLECULES, 2020, 25 (14):
1234