Results 21 to 30 of about 415,678 (293)

Synthesis and characterization of Fe3O4@Ag core-shell: structural, morphological, and magnetic properties [PDF]

Journal of Ultrafine Grained and Nanostructured Materials, 2014
This paper is a report on the synthesis of the Fe3O4@Ag core-shell with high saturation magnetization of magnetite nanoparticles as the core, by using polyol route and silver shell by chemical reduction.
Mahdi Ghazanfari, Fatemeh Johar, Ahmad Yazdani   +2 more
doaj   +1 more source

The Small-Scale Dynamo and Non-Ideal MHD in Primordial Star Formation [PDF]

, 2012
We study the amplification of magnetic fields during the formation of primordial halos. The turbulence generated by gravitational infall motions during the formation of the first stars and galaxies can amplify magnetic fields very efficiently and on ...
Biermann, Bovino, Christoph Federrath, Dominik Schleicher, Elmegreen, Federrath, Greif, Greif, Hennebelle, Jennifer Schober, Kazantsev, Kleeorin, Kolmogorov, Kritsuk, Krumholz, Kulsrud, Kulsrud, Machida, Machida, Machida, Machida, Maki, Maki, Peters, Ralf S. Klessen, Robi Banerjee, Schekochihin, Schekochihin, Schekochihin, Schekochihin, Schleicher, Simon Glover, Subramanian, Sur, Sur, Tan, Turk, Vazquez-Semadeni, Wise, Xu, Xu   +40 more
core   +2 more sources

Magnetic helicity in stellar dynamos: new numerical experiments [PDF]

, 2001
The theory of large scale dynamos is reviewed with particular emphasis on the magnetic helicity constraint in the presence of closed and open boundaries. In the presence of closed or periodic boundaries, helical dynamos respond to the helicity constraint
Brandenburg, A., Dobler, W., Subramanian, K.   +2 more
core   +3 more sources

Electron coherence at low temperatures: The role of magnetic impurities

, 2007
We review recent experimental progress on the saturation problem in metallic quantum wires. In particular, we address the influence of magnetic impurities on the electron phase coherence time.
Abraham, Altshuler, Altshuler, Alzoubi, Benoıˆt, Benoıˆt, Bergmann, Bergmann, Bergmann, Bergmann, Borda, Bäuerle, Cazalilla, Chandrasekhar, Christopher Bäuerle, Degiovanni, Echternach, Eriksen, Eska, Feynman, Gershenson, Golubev, Golubev, Golubev, Golubev, Golubev, Guinea, Guinea, Guinea, Haldane, Hewson, Hikami, Imry, Kettemann, Kettemannm, Kondo, Laurent Saminadayar, Lin, Ludwig, Mallet, Micklitz, Micklitz, Mohanty, Mohanty, Montambaux, Mueller, Nozières, Pannetier, Pannetier, Pannetier, Pascal Degiovanni, Peters, Pierre, Pierre, Pritiraj Mohanty, Richard A. Webb, Rizutto, Schopfer, Texier, Van Haesendonck, Webb, Wei, Zaránd   +62 more
core   +3 more sources

Review of Electromagnetic Vibration in Electrical Machines

Energies, 2018
Electrical machines are important devices that convert electric energy into mechanical work and are widely used in industry and people’s life. Undesired vibrations are harmful to their safe operation.
Xueping Xu, Qinkai Han, Fulei Chu
doaj   +1 more source

GA-Based Off-Line Parameter Estimation of the Induction Motor Model Including Magnetic Saturation and Iron Losses

IEEE Open Journal of Industry Applications, 2020
This paper, starting from recent papers in the scientific literature dealing with Rotating Induction Motor (RIM) dynamic modelling, as a first step, improves its space-vector dynamic model, including both the magnetic saturation and iron losses; The main
Angelo Accetta, Francesco Alonge, Maurizio Cirrincione, Filippo D'Ippolito, Marcello Pucci, Antonino Sferlazza   +5 more
doaj   +1 more source

Fieldlike and antidamping spin-orbit torques in as-grown and annealed Ta/CoFeB/MgO layers [PDF]

, 2014
We present a comprehensive study of the current-induced spin-orbit torques in perpendicularly magnetized Ta/CoFeB/MgO layers. The samples were annealed in steps up to 300 degrees C and characterized using x-ray absorption spectroscopy, transmission ...
Auffret, Stéphane, Avci, Can Onur, Ballesteros, Belén, Barla, Alessandro, Boulle, Olivier, Buda-Prejbeanu, L., Gambardella, Pietro, Garello, Kevin, Gaudin, Gilles, Ghosh, Abhijit, Godey, Sylvie, Jué, E., Miron, Ioan Mihai, Mugarza, Aitor, Nistor, Corneliu, Pellegrin, Eric, Valvidares, Manuel   +16 more
core   +4 more sources

Investigation of measurement method of saturation magnetization of iron core material using electromagnet

AIP Advances, 2018
This paper discusses a measurement method for saturation magnetizations of iron core materials using an electromagnet, which can apply an extremely large magnetic field strength to a specimen.
Takuya Shibataki, Yasuhito Takahashi, Koji Fujiwara   +2 more
doaj   +1 more source

Saturation of the Turbulent Dynamo

, 2015
The origin of strong magnetic fields in the Universe can be explained by amplifying weak seed fields via turbulent motions on small spatial scales and subsequently transporting the magnetic energy to larger scales.
Bovino, Stefano, Federrath, Christoph, Klessen, Ralf S., Schleicher, Dominik R. G., Schober, Jennifer   +4 more
core   +1 more source

A small angle neutron scattering and Mössbauer spectrometry study of magnetic structures in nanocrystalline Ni3Fe [PDF]

, 1999
Results are reported from small angle neutron scattering and Mössbauer spectrometry measurements on nanocrystalline Ni3Fe. The nanocrystalline materials were prepared by mechanical attrition and studied in the as-milled state, after annealing at 265 °C ...
Frase, H. N., Fultz, B., Robertson, J. L., Spooner, S.   +3 more
core   +1 more source