A New Role of M1 Type Dopant for Nd-Rich Nd-Fe-Co-B Nanocrystalline Ribbons |
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| Affiliation: | 1. School of Physics, China University of Mining and Technology, Xuzhou 221116, People''s Republic of China;2. State Key Laboratory for Geomechanics and Deep Underground Engineering, School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, People''s Republic of China;1. Comparative Medicine, Messerli Research Institute, University of Veterinary Medicine Vienna, Medical University Vienna and University Vienna, Vienna, Austria;2. Institute of Pathophysiology and Allergy Research, Center of Pathophysiology, Infectiology and Immunology, Medical University Vienna, Waehringer G. 18-20, 1090 Vienna, Austria;3. AllergyCare, Allergy Diagnosis and Study Center, 1220 Vienna, Austria;4. The Rudolfinerhaus, Vienna, Austria;5. Division of Immunology, Allergy and Infectious Diseases, Department of Dermatology, Medical University Vienna, Vienna, Austria;1. School of Mechanical Engineering, Dongguan University of Technology, Dongguan 523808, China;2. Faculty of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China |
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| Abstract: | In this work, our attempts focused on Ge effects on magnetic-microstructural relationships in Nd-Fe-Co-B nanocrystalline ribbons. Based on Transmission Electron Microscopy (TEM) and three dimensional atom probe (3DAP) analysis, it was observed that Ge containing alloys have a new behavior that was not observed yet. The increase of Ge content up to 0.36at% caused the increase of Br and (BH)max due to increase of Co content of Nd2Fe14B phase. However, the magnetic properties deteriorated for Ge bearing samples beyond 0.36at% due to the decrease of volume fraction of Nd2Fe14B phase. The comparison of Ge and Ga (another M1 dopant) effects on coercivity was reported and microstructural studies (using TEM and 3DAP) were shown the Nd-rich phase morphology and its alloying elements distribution in the nanometer sized intergranular phase. |
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