Zobrazeno 1 - 10
of 73
pro vyhledávání: '"D J, Sellmyer"'
Publikováno v:
AIP Advances, Vol 12, Iss 3, Pp 035341-035341-4 (2022)
Magnetic flux densities (B-fields) and field intensities (H-fields) in thin films are investigated from the viewpoints of Berry phase and topological Hall effect. The well-known origin of the topological Hall effect is an emergent B-field originating
Externí odkaz:
https://doaj.org/article/f1ff1eb1fc1e4ff5999f172a6c92995d
Publikováno v:
AIP Advances, Vol 9, Iss 12, Pp 125049-125049-4 (2019)
The effect of micromagnetic boundary conditions on the Berry curvature and topological Hall effect in granular nanostructures is investigated by model calculations. Both free surfaces and grain boundaries between interacting particles or grains affec
Externí odkaz:
https://doaj.org/article/f7d02774f2ce4244a1a339ebd5b79422
Autor:
O. Tosun, I. Ruzybayev, F. M. Abel, B. Balamurugan, R. Skomski, D. J. Sellmyer, G. C. Hadjipanayis
Publikováno v:
AIP Advances, Vol 9, Iss 12, Pp 125144-125144-5 (2019)
We have investigated the structural and magnetic properties of Co1-xVx nanoparticles (NPs) with composition x = 0.25 (stoichiometric) and 0.29 (under-stoichiometric) prepared by the cluster-beam deposition (CBD) technique. Our data shows that the as-
Externí odkaz:
https://doaj.org/article/905518d956ee48a2aec9ef71b9aa0d79
Publikováno v:
AIP Advances, Vol 9, Iss 3, Pp 035128-035128-4 (2019)
The creation and control of magnetocrystalline anisotropy in bulk and nanostructured magnetic materials remain a continuing challenge, and density functional theory assists the experimental research in developing new high-anisotropy magnetic material
Externí odkaz:
https://doaj.org/article/1ce083a374ca444a9aaa35ae75c81d12
Autor:
K. Schroeder, J. Waybright, P. Kharel, W. Zhang, S. Valloppilly, J. Herran, P. Lukashev, Y. Huh, R. Skomski, D. J. Sellmyer
Publikováno v:
AIP Advances, Vol 8, Iss 5, Pp 056431-056431-6 (2018)
The magnetic and magnetocaloric properties of iron-substituted Co2VGa alloys, Co2-xFexVGa (x = 0, 0.1, 0.15, 0.2, 0.3), were investigated. The Fe-substituted samples, prepared by arc melting, melt spinning, and annealing, crystallized in the L21 Heus
Externí odkaz:
https://doaj.org/article/7e174f85f21c4bd5aa8aaee72a25455b
Publikováno v:
AIP Advances, Vol 7, Iss 5, Pp 055834-055834-6 (2017)
Structural and electron-transport properties of thin films of the ferrimagnetic Heusler compound CoFeCrAl have been investigated to elucidate structure-property relationships. The alloy is, ideally, a spin-gapless semiconductor, but structural disord
Externí odkaz:
https://doaj.org/article/a0348a69595943dbba93469655bb0b35
Autor:
Ralph Skomski, Liqin Ke, Matthew J. Kramer, Iver E. Anderson, C. Z. Wang, W. Y. Zhang, Jeff E. Shield, D. J. Sellmyer
Publikováno v:
AIP Advances, Vol 7, Iss 5, Pp 056222-056222-5 (2017)
It is investigated how magnetostatic interactions affect the coercivity of alnico-type magnets. Starting from exact micromagnetic relations, we analyze two limits, namely cooperative reversal processes operative on short lengths scales and noncoopera
Externí odkaz:
https://doaj.org/article/a2befd5128584d24849662de2c60bd3a
Autor:
Y. Jin, J. Waybright, P. Kharel, I. Tutic, J. Herran, P. Lukashev, S. Valloppilly, D. J. Sellmyer
Publikováno v:
AIP Advances, Vol 7, Iss 5, Pp 055812-055812-6 (2017)
The structural, magnetic and electron-transport properties of Co2Ti1−xFexSi (x = 0, 0.25, 0.5) ribbons prepared by arc-melting and melt-spinning were investigated. The rapidly quenched Co2Ti0.5Fe0.5Si crystallized in the cubic L21 structure whereas
Externí odkaz:
https://doaj.org/article/f0fecfb552cd4ac792cd990c7a5256e3
Autor:
R. Skomski, D. J. Sellmyer
Publikováno v:
AIP Advances, Vol 7, Iss 5, Pp 055802-055802-4 (2017)
It is investigated how a Berry phase is created in polycrystalline nanomagnets and how the phase translates into an emergent magnetic field and into a topological Hall-effect contribution. The analysis starts directly from the spin of the conduction
Externí odkaz:
https://doaj.org/article/0024beced6c143918ac3717ddd035565
Autor:
P. Kharel, J. Herran, P. Lukashev, Y. Jin, J. Waybright, S. Gilbert, B. Staten, P. Gray, S. Valloppilly, Y. Huh, D. J. Sellmyer
Publikováno v:
AIP Advances, Vol 7, Iss 5, Pp 056402-056402-6 (2017)
Recent discovery of a new class of materials, spin-gapless semiconductors (SGS), has attracted considerable attention in the last few years, primarily due to potential applications in the emerging field of spin-based electronics (spintronics). Here,
Externí odkaz:
https://doaj.org/article/256e18531ba3426d8b443f14af864f97