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Structure and magnetic properties of nanocrystalline ferromagnets (II) |
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| Authors: | Tao Liu Zuxiong Xu Zhongtao Zhao Ruzhang Ma Tiandou Hu Yaning Xie Yinghuan Guo |
| Institution: | 1. Department of Materials Physics, University of Science and Technology Beijing, 100083, Beijing, China 2. Synchrotron Radiation Laboratory, Institute of High Energy Physics Chinese Academy of Sciences, 100039, Beijing, China 3. Institute of High Energy Physics, Chinese Academy of Sciences, 100080, Beijing, China |
| Abstract: | The role of magnetoelastic coupling effects in nanocrystalline ferromagnets is investigated by means of high-field magnetization and Doppler-broadening spectrum measurements. For the nanocrystalline Fe73 5Cu1Nb3Si13.5B9 alloy, the results show that the pinning effects resulting from the quasidislocation dipole intensely influence the movement of domain wall; by coupling with the magnetostriction the defects-induced stress fields determine the magnetic properties at the early stage of crystallization. In view of the effective anisotropy and magnetoelastic coupling energy the optimal annealing conditions of alloys are discussed. |
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