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The magnetic dynamics of low-dimensional iron ion chains have been studied with regards to the tunable finite-sized chain length using iron phthalocyanine thin films. The deposition temperature varies the diffusion length during thin film…

材料科学 · 物理学 2017-02-01 Paul D. Ekstrand , Daniel J. Javier , Thomas Gredig

We employed micro-focused Brillouin light scattering to study the amplification of the thermal spin wave eigenmodes by means of a pure spin current, generated by the spin-Hall effect, in a transversely magnetized Pt(4nm)/NiFe(4nm)/SiO2(5nm)…

介观与纳米尺度物理 · 物理学 2015-03-25 M. Madami , G. Gubbiotti , T. Moriyama , K. Tanaka , G. Siracusano , M. Carpentieri , G. Finocchio , S. Tacchi , T. Ono , G. Carlotti

A novel medium Mn steel of composition Fe-12Mn-4.8Al-2Si-0.32C-0.3V was manufactured with 1.09 GPa yield strength, 1.26 GPa tensile strength and 54% elongation. The thermomechanical process route was designed to be industrially translatable…

材料科学 · 物理学 2020-04-22 T W J Kwok , K M Rahman , X Xu , I Bantounas , J F Kelleher , S Daswari , T Alam , R Banerjee , D Dye

The insulating magnetic material Fe3PO4O3 features a non-centrosymmetric lattice composed of Fe^{3+} triangular units. Frustration, due to competing near neighbor ($J_1$) and next nearest neighbor ($J_2$) antiferromagnetic interactions, was…

强关联电子 · 物理学 2018-01-03 M. J. Tarne , M. M. Bordelon , S. Calder , J. R. Neilson , K. A. Ross

Magnetic skyrmions are vortex-like topological spin textures often observed to form a triangular-lattice skyrmion crystal in structurally chiral magnets with Dzyaloshinskii-Moriya interaction. Recently $\beta$-Mn structure-type Co-Zn-Mn…

Powder neutron diffraction experiments have been employed to establish the effects of site-selective magnetic dilution in the Sm2MnMnMn4-x Tix O12 A-site columnar ordered quadruple perovskite manganites (x = 1, x = 2 and x = 3). We show…

Dirac semimetals have attracted a great deal of current interest due to their potential applications in topological quantum computing, low-energy electronic applications, and single photon detection in the microwave frequency range. Herein…

介观与纳米尺度物理 · 物理学 2022-07-28 W. Yu , D. X. Rademacher , N. R. Valdez , M. A. Rodriguez , T. M. Nenoff , W. Pan

The transport properties of an ionic model for liquid silica at high temperatures and pressure are investigated using molecular dynamics simulations. With increasing pressure, a clear change from "strong" to "fragile" behaviour (according…

材料科学 · 物理学 2008-02-03 Jean-Louis Barrat , James Badro , Philippe Gillet

When particulate suspensions are sheared, perturbations in the shear flows around the rigid particles increase the local energy dissipation, so that the viscosity of the suspension is effectively higher than that of the solvent. For bulk…

软凝聚态物质 · 物理学 2009-11-13 Mark L. Henle , Alex J. Levine

Spinel Fe3O4 nanoparticles have been produced through ball milling in methyl-alcohol (CH3OH), aiming to obtain samples with similar average particle sizes <d> and different interparticle interactions. Three samples having Fe3O4/CH3(OH) mass…

材料科学 · 物理学 2011-03-24 Gerardo F. Goya

We investigate a magnetic impurity in Bernal stacked bilayer graphene by a non-perturbative numerical exact approach. In the two cases we study, impurity is placed on the top of two different sublattices (A and B) in bilayer graphene. We…

强关联电子 · 物理学 2012-06-05 J. H. Sun , F. M. Hu , H. K. Tang , H. Q. Lin

The structural and magnetic properties of Zn/Al doped nickel ferrite thin films can be adjusted by changing the Zn and Al content. The films are epitaxially grown by reactive magnetron sputtering using a triple cluster system to sputter…

The spin states at the surface of epitaxial thin films of hematite, both undoped and doped with 1% Ti, Sn or Zn, respectively, were probed with x-ray magnetic linear dichroism (XMLD) spectroscopy. Morin transitions were observed for the…

Highly dense MgB2 policrystalline bulk materials, obtained by reactive liquid infiltration, have been characterized in their superconducting transport and magnetic properties in magnetic field and in a temperature range of interest for the…

超导电性 · 物理学 2007-05-23 G. Giunchi , S. Ceresara , L. Martini , V. Ottoboni , S. Chiarelli , M. Spadoni

We present the results of a molecular dynamics computer simulation in which we investigate the dynamics of silica. By considering different system sizes, we show that in simulations of the dynamics of this strong glass former surprisingly…

统计力学 · 物理学 2009-10-28 J. Horbach , W. Kob , K. Binder , C. A. Angell

Magnetic skyrmions are topologically protected spin swirling vertices, which are promising in device applications due to their particle-like nature and excellent controlability. Magnetic skyrmions have been extensively studied in a variety…

材料科学 · 物理学 2025-09-10 Fawei Zheng

We investigate how ferrofluid droplets suspended in a wall-bounded shear flow can organise when subjected to an external magnetic field. By tuning the magnitude of the external magnetic field, we find that the ferrofluid droplets form…

软凝聚态物质 · 物理学 2022-07-06 Shunichi Ishida , Yaochen Yang , Fanlong Meng , Daiki Matsunaga

We report the discovery of a new form of inductance in the bulk ferrimagnet Mn3Si2Te6, which features strong spin-orbit coupling, large magnetic anisotropy, and pronounced magnetoelastic interactions. Below its Curie temperature, Mn3Si2Te6…

Phase-separated magnetic fluids provide a very strong magnetic response ($\mu>25$) in a liquid state material. Even small fields can cause a notable material response, but this depends on its properties, which are often difficult to…

软凝聚态物质 · 物理学 2024-05-10 Laura Nelsone , Guntars Kitenbergs

Many of the anomalous properties of water are amplified in the deeply supercooled region. Here we present neutron scattering measurements of the density of heavy water confined in a nanoporous silica matrix MCM-41-S (\approx15 {\AA} pore…