Exchange-bias and exchange-spring coupling in magnetic core-shell nanoparticles

被引：33
|
作者：
Soares, J. M. [1 ]
Galdino, V. B. [1 ]
Machado, F. L. A. [2 ]
机构：
[1] Univ Estado Rio Grande do Norte, Dept Fis, BR-59610010 Mossoro, RN, Brazil
[2] Univ Fed Pernambuco, Dept Fis, BR-50670901 Recife, PE, Brazil
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2014年 / 350卷
关键词：
Cobalt ferrite; Core-shell; Nanoparticie; Exchange-spring; Exchange-bias; SIZE;
D O I：
10.1016/j.jmmm.2013.09.040
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Nanopowders of CoFe2O4 with an average particle size of 72.7 nm were produced by an oxidation process and they were used to obtain core-shell nanoparticles of CoFe2O4/CoFe2 by reducing them under hydrogen atmospheres. Hysteresis loops were measured from 10 to 300 K by field-cooling the sample under an applied magnetic held of 12 kOe. The exchange coupling among the core-shell structure was Found to vary with the thickness of the shell. A phenomenological model which takes into account the thickness of a disordered layer at the core-shell surface was used for determining the exchange-bias anisotropy constant K-EB ( = 0.22 erg/cm(2)). (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：69 / 72
页数：4
相关论文
共 50 条
  • [1] Exchange-bias and exchange-spring coupling in manganite nanostructures
    Yu, J. Y.
    Li, P.
    Xu, J. R.
    Huang, K.
    Zhang, L.
    Wang, L.
    [J]. APPLIED PHYSICS LETTERS, 2019, 114 (24)
  • [2] Exchange-bias and magnetic anisotropy fields in core-shell ferrite nanoparticles
    Silva, F. G.
    Depeyrot, J.
    Raikher, Yu L.
    Stepanov, V., I
    Poperechny, I. S.
    Aquino, R.
    Ballon, G.
    Geshev, J.
    Dubois, E.
    Perzynski, R.
    [J]. SCIENTIFIC REPORTS, 2021, 11 (01)
  • [3] Exchange-bias and magnetic anisotropy fields in core–shell ferrite nanoparticles
    F. G. Silva
    J. Depeyrot
    Yu. L. Raikher
    V. I. Stepanov
    I. S. Poperechny
    R. Aquino
    G. Ballon
    J. Geshev
    E. Dubois
    R. Perzynski
    [J]. Scientific Reports, 11
  • [4] Magnetic stability in exchange-spring and exchange-bias systems after multiple switching cycles
    Jiang, JS
    Inomata, A
    You, CY
    Pearson, JE
    Bader, SD
    [J]. JOURNAL OF APPLIED PHYSICS, 2001, 89 (11) : 6817 - 6819
  • [5] Mossbauer effect study of the Fe spin structure in exchange-bias and exchange-spring systems
    Keune, W
    Kuncser, VE
    Doi, M
    Askin, M
    Spies, H
    Sahoo, B
    Duman, E
    Acet, M
    Jiang, JS
    Inomata, A
    Bader, SD
    [J]. JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2002, 35 (19) : 2352 - 2358
  • [6] Exchange bias for core/shell magnetic nanoparticles
    Lemos, C. G. O.
    Figueiredo, W.
    Santos, M.
    [J]. PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS, 2015, 433 : 148 - 160
  • [7] Magnetization processes in core/shell exchange-spring structures
    Jiang, J. S.
    [J]. JOURNAL OF APPLIED PHYSICS, 2015, 117 (17)
  • [8] Magnetic anisotropy and interface exchange coupling dependence of exchange bias in core/shell doubly inverted magnetic nanoparticles
    Vatansever, Z. D.
    Yuksel, Y.
    Vatansever, E.
    [J]. JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2018, 51 (36)
  • [9] Influence of interfacial roughness on exchange bias in core-shell nanoparticles
    Evans, R. F. L.
    Bate, D.
    Chantrell, R. W.
    Yanes, R.
    Chubykalo-Fesenko, O.
    [J]. PHYSICAL REVIEW B, 2011, 84 (09):
  • [10] Exchange Bias in Fe@Cr Core-Shell Nanoparticles
    Binns, Chris
    Qureshi, Muhammad T.
    Peddis, Davide
    Baker, Stephen H.
    Howes, Paul B.
    Boatwright, Adrian
    Cavill, Stuart A.
    Dhesi, Sarnjeet S.
    Lari, Leonardo
    Kroeger, Roland
    Langridge, Sean
    [J]. NANO LETTERS, 2013, 13 (07) : 3334 - 3339
12345