| Autor: |
Jin Y, Zhang W; Nebraska Center for Materials and Nanoscience, University of Nebraska , Lincoln, NE 68588, USA., Kharel PR, Valloppilly SR; Nebraska Center for Materials and Nanoscience, University of Nebraska , Lincoln, NE 68588, USA., Skomski R; Nebraska Center for Materials and Nanoscience, University of Nebraska , Lincoln, NE 68588, USA., Sellmyer DJ |
| Jazyk: |
angličtina |
| Zdroj: |
AIP advances [AIP Adv] 2016 Feb 18; Vol. 6 (5), pp. 056002. Date of Electronic Publication: 2016 Feb 18 (Print Publication: 2016). |
| DOI: |
10.1063/1.4942556 |
| Abstrakt: |
The role of B on the microstructure and magnetism of Zr 16 Co 82.5- x Mo 1.5 B x ribbons prepared by arc melting and melt spinning is investigated. Microstructure analysis show that the ribbons consist of a hard-magnetic rhombohedral Zr 2 Co 11 phase and a minor amount of soft-magnetic Co. We show that the addition of B increases the amount of hard-magnetic phase, reduces the amount of soft-magnetic Co and coarsens the grain size from about 35 nm to 110 nm. There is a monotonic increase in the volume of the rhombohedral Zr 2 Co 11 unit cell with increasing B concentration. This is consistent with a previous theoretical prediction that B may occupy a special type of large interstitial sites, called interruption sites. The optimum magnetic properties, obtained for x = 1, are a saturation magnetization of 7.8 kG, a coercivity of 5.4 kOe, and a maximum energy product of 4.1 MGOe. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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