Anisotropies in soft magnetic nanocrystalline alloys |
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| Institution: | 1. Magnetic Materials Unit, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, 305-0047, Japan;2. Center of Excellence for Ceramics in Energy and Environment, School of Metallurgy and Materials Engineering, Iran University of Science and Technology (IUST), Narmak, Tehran, 16846-13114, Iran;3. Vacuumschmelze GmbH & Co. KG, D-63450, Hanau, Germany;1. Department of Materials Science and Engineering, Monash University, Clayton, VIC 3800, Australia;2. Zientzia eta Teknologia Fakultatea, Euskal Herriko Unibertsitatea, 644pk, Bilbao 48080, Spain;3. Graduate School of Engineering, Nagasaki University, Nagasaki 852-8521, Japan;4. Toyota Motor Corporation, Mishuku, Susono, Shizuoka 410-1193, Japan;1. School of Energy and Power Engineering, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai 200093, China;2. School of Material Science and Engineering, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai 200093, China;3. Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Science, 1219 Zhongguan West Road, Ningbo, Zhejiang 315201, China;4. Ningbo Yunsheng Corp, 225 Canghai Road, Gaoxin District, Ningbo, Zhejiang 315201, China;1. Research and Development Center for Ultra High Efficiency Nanocrystalline Soft Magnetic Materials, Institute for Materials Research, Tohoku University, Sendai, Japan;2. Cooperative Research and Development Center for Advanced Materials, Institute for Materials Research, Tohoku University, Sendai, Japan;1. Boris Yeltsin Ural Federal University, Mira Str. 19, Yekaterinburg 620002, Russia;2. Gammamet Research and Production Enterprise, Tatishchev Str. 92, Yekaterinburg 620028, Russia |
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| Abstract: | The article reviews and updates the understanding of the soft magnetic properties of nanocrystalline Fe-based alloys. In optimized compositions the random magneto-crystalline anisotropy of the structural phases is largely averaged out. The soft magnetic properties are then controlled by magneto-elastic and induced anisotropies which are uniform on a scale much larger than the exchange length. But unlike to the case of soft magnetic amorphous alloys, there is still a competition between the random and the more uniform anisotropy contributions. The experimental findings are complemented by theoretical results. |
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