Exchange-coupled soft magnetic FeNi-SiO2 nanocomposite

被引：48
|
作者：
Zhao, YW
Ni, CY
Kruczynski, D
Zhang, XK
Xiao, JQ [1 ]
机构：
[1] Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA
[2] Univ Delaware, Dept Mat Sci & Engn, W M Keck Electron Microscope Facil, Newark, DE 19716 USA
[3] UTRON Inc, Manassas, VA 20109 USA
来源：
JOURNAL OF PHYSICAL CHEMISTRY B | 2004年 / 108卷 / 12期
关键词：
D O I：
10.1021/jp037588r
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We report a method to make exchange-coupled soft magnetic FeNi-SiO2 nanocomposite material composed of FeNi nanoparticles coated with a thin SiO2 layer. Permeability is independent of frequency up to at least 100 MHz, with value as high as 16 in samples with density merely 93% of the ideal density. The quality factors are higher than conventional high-frequency CoNi ferrites after 10 MHz and decrease in a much slower fashion with increasing frequency. We ascribe these experimental observations to the exchange coupling among the magnetic particles.
引用
收藏
页码：3691 / 3693
页数：3
相关论文
共 50 条
  • [31] ANALYSIS OF EXCHANGE-COUPLED MAGNETIC THIN FILMS
    HAGEDORN, FB
    JOURNAL OF APPLIED PHYSICS, 1970, 41 (06) : 2491 - &
  • [32] Soft/hard exchange-coupled layered structures with modulated exchange coupling
    Yan, SS
    Elkawni, M
    Li, DS
    Garmestani, H
    Liu, JP
    Weston, JL
    Zangari, G
    JOURNAL OF APPLIED PHYSICS, 2003, 94 (07) : 4535 - 4538
  • [33] Enhanced magnetic properties of SrFe12O19 through exchange-coupled nanocomposite
    Lamouri, R.
    Fkhar, L.
    Mounkachi, O.
    Mahmoud, A.
    Boschini, F.
    Hamedoun, M.
    Salmani, E.
    Kim, K. H.
    Ali, M. Ait
    Benyoussef, A.
    Ez-zahraouy, H.
    PHYSICA SCRIPTA, 2022, 97 (04)
  • [34] Novel exchange-coupled SmFe3/α-Fe nanocomposite magnets fabricated by magnetic annealing
    Li, Liya
    Yan, A-ru
    Peng, Hua-xin
    Luo, Yang
    Yi, Jianhong
    Peng, Yuandong
    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2015, 375 : 143 - 147
  • [35] A hybrid coercivity mechanism for exchange-coupled nanocomposite permanent magnets
    Lei Qiu
    Li Zhao
    Xiaojiao Weng
    Laichuan Shen
    Guoping Zhao
    Fang Wang
    Linhua Xie
    JournalofRareEarths, 2019, 37 (10) : 1030 - 1033
  • [36] Exchange-coupled nanocomposite magnets by nanoparticle self-assembly
    Zeng, H
    Li, J
    Liu, JP
    Wang, ZL
    Sun, SH
    NATURE, 2002, 420 (6914) : 395 - 398
  • [37] Energy Product Enhancement in Imperfectly Exchange-Coupled Nanocomposite Magnets
    Quesada, Adrian
    Granados-Miralles, Cecilia
    Lopez-Ortega, Alberto
    Erokhin, Sergey
    Lottini, Elisabetta
    Pedrosa, Javier
    Bollero, Alberto
    Aragon, Ana M.
    Rubio-Marcos, Fernando
    Stingaciu, Marian
    Bertoni, Giovanni
    de Julian Fernandez, Cesar
    Sangregorio, Claudio
    Fernandez, Jose F.
    Berkov, Dmitry
    Christensen, Mogens
    ADVANCED ELECTRONIC MATERIALS, 2016, 2 (04):
  • [38] Exchange-coupled nanocomposite magnets by nanoparticle self-assembly
    Hao Zeng
    Jing Li
    J. P. Liu
    Zhong L. Wang
    Shouheng Sun
    Nature, 2002, 420 : 395 - 398
  • [39] Energy product enhancement in sufficiently exchange-coupled nanocomposite ferrites
    Torkian, Shahab
    Ghasemi, Ali
    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2019, 469 : 119 - 127
  • [40] A hybrid coercivity mechanism for exchange-coupled nanocomposite permanent magnets
    Qiu, Lei
    Zhao, Li
    Weng, Xiaojiao
    Shen, Laichuan
    Zhao, Guoping
    Wang, Fang
    Xie, Linhua
    JOURNAL OF RARE EARTHS, 2019, 37 (10) : 1030 - 1033
12345