Nanocompositional Electron Microscopic Analysis and Role of Grain Boundary Phase of Isotropically Oriented Nd-Fe-B Magnets

Autor: Gregor A. Zickler, Josef Fidler

Publikováno v: Advances in Materials Science and Engineering, Vol 2017 (2017)

Nanoanalytical TEM characterization in combination with finite element micromagnetic modelling clarifies the impact of the grain misalignment and grain boundary nanocomposition on the coercive field and gives guidelines how to improve coercivity in N

Externí odkaz: https://doaj.org/article/02d1fa371cc44a56bdbb1a5f5ae349bb

Do micromagnetic simulations correctly predict hard magnetic hysteresis properties?

Autor: Josef Fidler, Peter Toson, Gregor A. Zickler

Publikováno v: Physica B: Condensed Matter. 486:142-150

Micromagnetic calculations using the finite element technique describe semi-quantitatively the coercivity of novel rare earth permanent magnets in dependence on grain size, grain shape, grain alignment and composition of grain boundaries and grain bo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7ee94ea1b34b9ed3d29668e063e0a6ae
https://doi.org/10.1016/j.physb.2015.10.013

Structural and magnetic properties of strongly carbon doped Fe–Co thin films

Autor: Ioannis Panagiotopoulos, Michael Stöger-Pollach, Josef Fidler, Vassilis Psycharis, G. Giannopoulos, Sebastian Fähler, D. Niarchos, Wolfgang Wallisch, Ludwig Reichel, Anastasios Markou

Publikováno v: Journal of Magnetism and Magnetic Materials. 393:479-483

In the framework of the ongoing research for novel rare earth free permanent magnet materials, the alloy Fe–Co–C has attracted interest from theorists, since carbon could induce a magneto-crystalline anisotropy. In this work structural and magnet

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::84786c27dc7be569fe9ec586ab1acc74
https://doi.org/10.1016/j.jmmm.2015.06.018

Toward Rare-Earth-Free Permanent Magnets: A Combinatorial Approach Exploiting the Possibilities of Modeling, Shape Anisotropy in Elongated Nanoparticles, and Combinatorial Thin-Film Approach

Autor: Jan Rusz, Josef Fidler, M. Gjoka, Manuel Vázquez, Ludwig Schultz, Lise-Marie Lacroix, G. Giannopoulos, D. Niarchos, F. Ott, Sebastian Fähler, Guillaume Viau, Cristina Bran, U. Sanyal, C. Sarafidis, Vassilis Psycharis, Alexander Edström, Evangelia Anagnostopoulou, Peter Toson, L. Reichel, Olle Eriksson

Publikováno v: JOM Journal of the Minerals, Metals and Materials Society
JOM Journal of the Minerals, Metals and Materials Society, Springer Verlag (Germany), 2015, 67 (6), pp.1318-1328
JOM Journal of the Minerals, Metals and Materials Society, 2015, 67 (6), pp.1318-1328
Digital.CSIC. Repositorio Institucional del CSIC
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The objective of the rare-earth free permanent magnets (REFREEPM) project is to develop a new generation of high-performance permanent magnets (PMs) without rare earths. Our approach is based on modeling using a combinatorial approach together with m

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ee93f32cbe7c1422e3793565262ec778
https://doi.org/10.1007/s11837-015-1431-7

Normal and abnormal grain growth in fine-grained Nd-Fe-B sintered magnets prepared from He jet milled powders

Autor: Gregor A. Zickler, F. Bittner, T.G. Woodcock, Ludwig Schultz, Oliver Gutfleisch, K. Üstüner, C. A. Schwöbel, Josef Fidler, M. Katter

Fine-grained, heavy rare earth free Nd-Fe-B sintered magnets were prepared from He jet milled powders with an average particle size of 1.5 µm by low temperature sintering at 920 °C or 980 °C. A coercivity of >1600 kA/m was achieved for an average

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6b706d0adfb2cc70d945afd36ac7a735
https://publica.fraunhofer.de/handle/publica/247407