Zobrazeno 1 - 10
of 249
pro vyhledávání: '"Nielsen, K K"'
Publikováno v:
Journal of Magnetism and Magnetic Materials, Vol. 535, 168057, 2021
We present the open source micromagnetic framework, MagTense, which utilizes a novel discretization approach of rectangular cuboid or tetrahedron geometry "tiles" to analytically calculate the demagnetization field. Each tile is assumed to be uniform
Externí odkaz:
http://arxiv.org/abs/2107.05364
Publikováno v:
Phys. Rev. B 104, 155136 (2021)
The properties of mobile impurities in quantum magnets are fundamental for our understanding of strongly correlated materials and may play a key role in the physics of high-temperature superconductivity. Hereby, the motion of hole-like defects throug
Externí odkaz:
http://arxiv.org/abs/2106.14510
Autor:
Nielsen, K. K., Bjørk, R.
Publikováno v:
Journal of Magnetism and Magnetic Materials, Vol. 507, 166799, 2020
The magnetic field of a homogeneously magnetized cylindrical tile geometry, i.e. an angular section of a finite hollow cylinder, is found. The field is expressed as the product between a tensor field describing the geometrical part of the problem and
Externí odkaz:
http://arxiv.org/abs/2004.11701
Publikováno v:
Published in International Journal of Refrigeration, Vol. 63 , 48-62, 2016
The total cost of a 25 W average load magnetic refrigerator using commercial grade Gd is calculated using a numerical model. The price of magnetocaloric material, magnet material and cost of operation are considered, and all influence the total cost.
Externí odkaz:
http://arxiv.org/abs/1605.02524
Autor:
Bjørk, R., Nielsen, K. K.
Publikováno v:
Solar Energy, Vol. 120, 187-194, 2015
The performance of a combined solar photovoltaic (PV) and thermoelectric generator (TEG) system is examined using an analytical model for four different types of commercial PVs and a commercial bismuth telluride TEG. The TEG is applied directly on th
Externí odkaz:
http://arxiv.org/abs/1508.01344
Autor:
Nielsen, K. K., Bjoerk, R., Jensen, J. B., Bahl, C. R. H, Pryds, N., Smith, A., Nordentoft, A., Hattel, J.
Magnetic refrigeration at room temperature is of great interest due to a long-term goal of making refrigeration more energy-efficient, less noisy and free of any environmentally hostile materials. A refrigerator utilizing an active magnetic regenerat
Externí odkaz:
http://arxiv.org/abs/0902.0812
Detailed isofield calorimetry of La(Fe,Si,Mn)H reveals distributed magnetocaloric phase transitions.
Publikováno v:
Journal of Applied Physics; 3/7/2020, Vol. 127 Issue 9, p1-8, 8p, 1 Color Photograph, 2 Charts, 7 Graphs
Akademický článek
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Akademický článek
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Autor:
Mira, A., de Larochelambert, T., Espanet, C., Giurgea, S., Nika, P., Bahl, C. R. H., Bjørk, R., Nielsen, K. K.
Publikováno v:
Journal of Applied Physics; 10/7/2017, Vol. 122 Issue 13, p1-8, 8p, 4 Diagrams, 1 Chart, 8 Graphs