Description

Development of high coercivity Dy-free Nd-Fe-B permanent magnet, which is the final aim of current project, needs to be carried out by microstructure design and modification. Microstructure design can be done by combination of multi-scale microstructure analysis and large scale micromagnetic simulations.

Details

Duration 01/04/2016 - 31/03/2017
Funding andere internationale Organisationen
Program CREST
Department

Department for Integrated Sensor Systems

Center for Modelling and Simulation

Principle investigator for the project (Danube University Krems) Univ.-Doz.Dipl.-Ing.Dr. Thomas Schrefl

Publications

Fischbacher, J.; Kovacs, A.; Exl, L.; Kühnel, J.; Mehofer, E.; Sepehri-Amin, H.; Ohkubo, T.; Hono, K.; Schrefl, T. (2018). Searching the weakest link: Demagnetizing fields and magnetization reversal in permanent magnets. Scripta Materialia, 154: 253/https://doi.org/10.1016/j.scriptamat.2017.11.0

Xu, X.D.; Sasaki, T.T.; Li, J.N.; Dong, Z.J.; Sepehri-Amin, H.; Kim, T.H.; Ohkubo, T.; Schrefl, T.; Hono, K.; (2018). Microstructure of a Dy-free Nd-Fe-B sintered magnet with 2?T coercivity. Acta Materialia, 156: 146/https://doi.org/10.1016/j.actamat.2018.06.037

Fischbacher, J.; Kovacs, A.; Exl, L.; Kühnel, J.; Mehofer, E.; Sepehri-Amin, H.; Ohkubo, T.; Hono, K.; Schrefl, T. (2017). Searching the weakest link: Demagnetizing fields and magnetization reversal in permanent magnets. Scripta Materialia, in press: in press

Sepehri-Amin, H.; Thielsch, J.; Fischbacher, J.; Ohkubo, T.; Schrefl, T.; Gutfleisch, O.; Hono, K. (2017). Correlation of microchemistry of cell boundary phase and interface structure to the coercivity of Sm (Co 0.784 Fe 0.100 Cu 0.088 Zr 0.028) 7.19 sintered magnets. Acta Materialia, 126: 1-10

Soderžnik, M.; Sepehri-Amin, H.; Sasaki, T. T.; Ohkubo, T.; Takada, Y.; Sato, T.; Kaneko, Y.; Kato, A.; Schrefl, T.; Hono, K. (2017). Magnetization reversal of exchange-coupled and exchange-decoupled Nd-Fe-B magnets observed by magneto-optical Kerr effect microscopy. Acta Materialia, 135: 68-76

Soderznik, M.; Amin, H. S.; Sasaki, T.; Ohkubo, T.; Takada, Y.; Sato, T.; Kaneko, Y.; Kato, A.; Schrefl T.; Hono, K. (2017). Propagation of magnetic domains in exchange coupled and exchange decoupled Nd-Fe-B magnets observed by magneto-optic Kerr effect. IEEE, 2017 IEEE International Magnetics Conference (INTERMAG): 1-1

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