Browsing Department of Physics by Subject "Permanent magnets"

Now showing items 1-8 of 8

    • Anisotropic nanostructured magnets by magnetic-field-assisted processing 

      Rong, Chuan-Bing; Nguyen, Van Vuong; Liu, J. Ping (American Institute of PhysicsDepartment of Physics, The University of Texas at Arlington, 2010-04-15)
      It has been a great challenge to produce anisotropic nanocrystalline bulk magnets. In this paper, we report our recent work in preparing anisotropic bonded magnets consisting of SmCo5 nanocrystalline particles. The work ...

    • Bimagnetic nanoparticles with enhanced exchange coupling and energy products 

      Nandwana, Vikas; Chaubey, Girija Shankar; Yano, Kazuaki; Rong, Chuan-Bing; Liu, J. Ping (American Institute of PhysicsDepartment of Physics, The University of Texas at Arlington, 2009-01-06)
      Bimagnetic FePt/Fe3O4 nanoparticles with core/shell or heterodimer structure have been prepared using a sequential synthetic method. The dimension of both FePt and Fe3O4 was tuned by varying the synthesis parameters. The ...

    • Bulk FePt-based nanocomposite magnets with enhanced exchange coupling 

      Rong, Chuan-Bing; Nandwana, Vikas; Poudyal, Narayan; Liu, J. Ping; Kozlov, Mikhail E.; Baughman, Ray H.; Ding, Yong; Wang, Zhong Lin (American Institute of PhysicsDepartment of Physics, The University of Texas at Arlington, 2007-07-23)
      High density bulk FePt/Fe3Pt nanocomposite magnets have been prepared by high-pressure warm compaction of chemically synthesized FePt and Fe3O4 nanoparticles. It is found that the density increases with the compaction ...

    • Bulk FePt-based nanocomposite magnets with enhanced exchange coupling 

      Nandwana, Vikas; Liu, J. Ping; Poudyal, Narayan; Rong, Chuan-Bing; Kozlov, Mikhail E.; Baughman, Ray H.; Ding, Yong; Wang, Zhong Lin (AIP, 2007)
      High density bulk FePt/Fe3Pt nanocomposite magnets have been prepared by high-pressure warm compaction of chemically synthesized FePt and Fe3O4 nanoparticles. It is found that the density increases with the compaction ...

    • Do thermal fluctuations influence the recoil loops of nanocomposite magnets? 

      Rong, Chuan-Bing; Liu, Yuzi; Liu, J. Ping (American Institute of PhysicsDepartment of Physics, The University of Texas at Arlington, 2008-07-11)
      An exchange-coupled FePt/Fe3Pt nanocomposite system with well defined hard/soft two-phase morphology was prepared by reducing chemically synthesized FePt/Fe3O4 bimagnetic nanoparticles. It was interesting to observe that ...

    • Effect of thermal fluctuations on the recoil loops of SmCo5[subscript]/Fe nanocomposite system 

      Rong, Chuan-Bing; Liu, J. Ping (American Institute of PhysicsDepartment of Physics, The University of Texas at Arlington, 2009-02-13)
      The correlation between the recoil loop openness and the activation volume has been studied for the SmCo5/α-Fe nanocomposite powder material prepared by mechanical alloying. The α-Fe phase content in the nanocomposite ...

    • Fabrication of bulk nanocomposite magnets via severe plastic deformation and warm compaction, 

      Rong, Chuan-Bing; Zhang, Ying; Poudyal, Narayan; Xiong, Xiangyuan; Kramer, Matthew J.; Liu, J. Ping (American Institute of PhysicsDepartment of Physics, The University of Texas at Arlington, 2010-03-10)
      We demonstrate that a SmCo/FeCo based hard/soft nanocomposite material can be fabricated by distributing the soft magnetic α-Fe phase particles homogeneously in a hard magnetic SmCo phase through severe plastic deformation. ...

    • MAGNETIC HARDENING IN THE TRANSITION METAL NANOPARTICLES AND NANOWIRES 

      Xing, Meiying; 0000-0002-1738-670X (2020-08-27)
      Permanent magnets are important materials widely used in advanced technologies including electric vehicles, windmills, memory devices, magnetic levitation transportation, and biomedical apparatus. Rare-earth-based compounds ...