A Mossbauer study of spring magnets

• Published in: IEEE transactions on magnetics Vol. 39; no. 5; pp. 2959 - 2961
• Main Authors: Sorescu, M., Grabias, A., Valeanu, M.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: New York, NY IEEE 01-09-2003; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Amorphous magnetic materials; Amorphous materials; Annealing; Applied sciences; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Exact sciences and technology; Iron alloys; Magnetic field measurement; Magnetic properties and materials; Magnetism; Magnets; Metals. Metallurgy; Neodymium; Permanent magnets; Physics; Soft magnetic materials; Spinning; Springs; Studies of specific magnetic materials; Quaternary alloys; Exchange-coupled NdFeB; Ternary alloys; Moessbauer spectroscopy; Melt spinning; Permanent magnets; Amorphous alloy; Experimental study; Neodymium alloys; Boron alloys; spring magnets; Dysprosium alloys; Mössbauer spectroscopy; Exchange interactions; Iron base alloys
• ISSN: 0018-9464; 1941-0069
• DOI: 10.1109/TMAG.2003.815760

Several compositions of the Nd/sub x/Fe/sub 100-x-y/B/sub y/ system have been prepared in amorphous ribbon form by a melt spinning method. The Nd and B contents x and y increased from 7.3 and 3.6 to 11 and 6, respectively. The alloys were annealed under optimized conditions to obtain a composite material consisting of the hard magnetic Nd/sub 2/Fe/sub 14/B and soft magnetic /spl alpha/-Fe phases. Phase analysis was performed using Mossbauer spectroscopy as the primary technique. The hyperfine magnetic fields and site populations of the component phases were determined and discussed. All spring magnet compositions were checked by hysteresis loop measurements.