Effect of cobalt substitution on structure and magnetic properties of Nd0.4Zr0.6Fe10–xCoxSi2 (x = 0–3) alloys and their ribbons
- Institute of Nanoscience and Nanotechnology (NCSR) Athens (Greece); Univ. of Delaware, Newark, DE (United States)
- Aristotle University of Thessaloniki (Greece)
- Institute of Nanoscience and Nanotechnology (NCSR) Athens (Greece)
- Univ. of Delaware, Newark, DE (United States)
- Universidad del Valle (Colombia)
This paper reports the stabilization of the RFe12-type based compounds where part of R and Fe are substituted with Zr and Co and Si, respectively, in order to examine whether these rare-earth-lean materials are suitable for applications as permanent magnets. Structural and magnetic characterization of the family of alloys with the general formula Nd0.4Zr0.6Fe10–xCoxSi2 (x = 0–3) and their melt-spun ribbons were carried out using X-ray diffraction and Mössbauer spectroscopy. The ThMn12-type structure is obtained for all samples as the majority phase with a minority α-Fe(CoSi) phase (less than 5 wt%) as it was estimated by XRD for x = 1 and 2. The Curie temperature increases linearly with Co substitution from 561 K for x = 0 to 712 K for x = 3. The saturation magnetization decreases slightly from 130.5 (x = 1) to 129.1 A·m2/kg (x = 3), while the anisotropy field is following the same trend.
- Research Organization:
- Univ. of Delaware, Newark, DE (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Grant/Contract Number:
- FG02-90ER45413
- OSTI ID:
- 1800712
- Alternate ID(s):
- OSTI ID: 1778571
- Journal Information:
- Journal of Rare Earths, Vol. 37, Issue 10; ISSN 1002-0721
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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