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  1. Book ; Online: Effect of interfacial spin mixing conductance on gyromagnetic ratio of Gd substituted Y$_{3}$Fe$_{5}$O$_{12}$

    Cahaya, Adam B. / Azhar, Anugrah / Djuhana, Dede / Majidi, Muhammad Aziz

    2022  

    Abstract: Due to its low intrinsic damping, Y$_3$Fe$_5$O$_{12}$ and its substituted variations are often used for ferromagnetic layer at spin pumping experiment. Spin pumping is an interfacial spin current generation in the interface of ferromagnet and non- ... ...

    Abstract Due to its low intrinsic damping, Y$_3$Fe$_5$O$_{12}$ and its substituted variations are often used for ferromagnetic layer at spin pumping experiment. Spin pumping is an interfacial spin current generation in the interface of ferromagnet and non-magnetic metal, governed by spin mixing conductance parameter $G^{\uparrow\downarrow}$. $G^{\uparrow\downarrow}$ has been shown to enhance the damping of the ferromagnetic layer. The theory suggested that the effect of $G^{\uparrow\downarrow}$ on gyromagnetic ratio only come from its negligible imaginary part. In this article, we show that the different damping of ferrimagnetic lattices induced by $G^{\uparrow\downarrow}$ can affect the gyromagnetic ratio of Gd-substituted Y$_3$Fe$_5$O$_{12}$.

    Comment: 7 pages, 4 figures
    Keywords Condensed Matter - Mesoscale and Nanoscale Physics ; Condensed Matter - Materials Science
    Publishing date 2022-04-01
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article: Interaction of antiparallel transverse domain walls in ferromagnetic nanowires.

    Djuhana, D / Piao, H-G / Shim, J-H / Lee, S-H / Oh, S K / Yu, S-C / Kim, D-H

    Journal of nanoscience and nanotechnology

    2011  Volume 11, Issue 7, Page(s) 6237–6240

    Abstract: The interaction of antiparallel transverse domain walls in ferromagnetic nanowires was investigated via micromagnetic simulation with systematic variations of the external field strength as well as the wire thickness. The interaction of antiparallel ... ...

    Abstract The interaction of antiparallel transverse domain walls in ferromagnetic nanowires was investigated via micromagnetic simulation with systematic variations of the external field strength as well as the wire thickness. The interaction of antiparallel transverse walls after domain wall collision exhibited damped multiple collisions due to the rigid structure of the antiparallel transverse walls. The detailed process during the multiple collisions was analyzed via the Fast Fourier Transform technique, along with a careful examination of the inner spin structures of the colliding domain walls. It was found that a frequency peak of multiple collisions shifted to a higher peak position as the external field strength increases. With a stronger field strength of around a few hundred mT, it was found that two antiparallel transverse walls were finally annihilated with formation of complex antivortex structures.
    Language English
    Publishing date 2011-10-06
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 1533-4880
    ISSN 1533-4880
    DOI 10.1166/jnn.2011.4485
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Inter-library loan at ZB MED

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  3. Article: Three-dimensional spin configuration of ferromagnetic nanocubes.

    Piao, H-G / Djuhana, D / Shim, J-H / Lee, S-H / Jun, S-H / Oh, S K / Yu, S-C / Kim, D-H

    Journal of nanoscience and nanotechnology

    2010  Volume 10, Issue 11, Page(s) 7212–7216

    Abstract: We have systematically investigated three-dimensional spin configurations in ferromagnetic nanocubes using micromagnetic simulation with variation of cube geometry. For thin cuboids, a spin configuration exhibits a four-domain Landau state with a ... ...

    Abstract We have systematically investigated three-dimensional spin configurations in ferromagnetic nanocubes using micromagnetic simulation with variation of cube geometry. For thin cuboids, a spin configuration exhibits a four-domain Landau state with a magnetic vortex structure at the center as in the case of a thin film square. For a thick cube, a complex spin configuration with an S-type cylindrically asymmetric vortex having two cores on a pair of surfaces while a leaf-like and a C-type states are observed on the other two pairs of cube surfaces. Competition between the geometrical symmetry and magnetic energy minimization condition in ferromagnetic nanocubes leads to the complex spin structure with a spontaneously broken symmetry.
    Language English
    Publishing date 2010-08-10
    Publishing country United States
    Document type Journal Article
    ISSN 1533-4880
    ISSN 1533-4880
    DOI 10.1166/jnn.2010.2760
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  4. Article: Translational positioning of a magnetic domain wall in ferromagnetic nanowires using a stray field filter.

    Piao, H-G / Djuhana, D / Shim, J-H / Lee, S-H / Yu, S-C / Oh, S K / Ahn, S-M / Choe, S-B / Kim, D-H

    Journal of nanoscience and nanotechnology

    2011  Volume 11, Issue 7, Page(s) 6122–6125

    Abstract: Understanding the interaction between the magnetic domain wall and the various artificial defects in ferromagnetic nanowires has been of utmost importance for the future realization of the spintronic devices based on the magnetic domain wall motion in ... ...

    Abstract Understanding the interaction between the magnetic domain wall and the various artificial defects in ferromagnetic nanowires has been of utmost importance for the future realization of the spintronic devices based on the magnetic domain wall motion in nanowires. In this work, the chirality filter effect of the magnetic domain wall in T-shaped ferromagnetic nanowires with a stray field filter was investigated via micromagnetic simulation. A tapered wire was attached to the flat nanowires to form a potential barrier or well for the domain wall propagating along them. For the domain wall passing through the potential barrier or the potential well, the spin structure of the domain wall and the interaction between the domain wall and the potential barrier/well were investigated in detail. The chirality-dependent translational positioning of the domain wall was intensively examined for the potential barrier and potential well cases. The domain wall chirality transmission on relatively long length scales using a series of potential wells was explored.
    Language English
    Publishing date 2011-10-06
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 1533-4880
    ISSN 1533-4880
    DOI 10.1166/jnn.2011.4484
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

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