Magnetization of amorphous Fe0.82B0.18 and Fe0.90Zr0.10 compounds with additions of Tb : The 6th joint magnetism and magnetic materials (MMM)-intermag conference
Clegg, S. J. ; Purdy, J. H. ; Greenough, R. D. ; Jerems, F.
[S.l.] : American Institute of Physics (AIP)
Published 1994
[S.l.] : American Institute of Physics (AIP)
Published 1994
| ISSN: |
1089-7550
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| Source: |
AIP Digital Archive
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| Topics: |
Physics
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| Notes: |
The addition of Tb to melt spun iron-boron or iron-zirconium compounds raises the magneto- striction to practically useful levels (≥450 ppm) at room temperature. The present work examines the corresponding compositional and temperature dependencies of the magnetization in Tbx (Fe0.82B0.18)1−x for 0≤x≤0.5 and Tb y (Fe0.90Zr0.10)1−y for 0≤y≤0.1. Increasing the Tb content in Fe-B compounds decreases the room-temperature magnetization towards a compensation point and lowers the Curie temperature Tc. In Fe-Zr compounds, Tb increases the room-temperature magnetization and raises Tc. Magnetic phase diagrams are presented for each group of compounds and exchange frustration effects identified by comparing the observed temperature dependencies of the reduced magnetization with predictions from the Handrich mean field model. Only 3 at. % Tb in Fe-Zr is sufficient to annul exchange fluctuations, but in Fe-B compounds exchange frustration persists throughout the compositional range.
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| Type of Medium: |
Electronic Resource
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| URL: |