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Microstructural Investigation of RE3(Fe.V) 29 (RE = Nd, Tb) Magnetic Materials

Published online by Cambridge University Press:  21 February 2011

J. Bernardi ,
M. Noner ,
J. Fidler ,
X.F. Han  and
F.M. Yang
J. Bernardi
Affiliation:
Institut für Angewandte und Technische Physik, Vienna University of Technology, Wiedner Hauptstr. 8-10, A-1040 Wien, Austria, bernardi@email.tuwien.ac.at
M. Noner
Affiliation:
Institut für Angewandte und Technische Physik, Vienna University of Technology, Wiedner Hauptstr. 8-10, A-1040 Wien, Austria
J. Fidler
Affiliation:
Institut für Angewandte und Technische Physik, Vienna University of Technology, Wiedner Hauptstr. 8-10, A-1040 Wien, Austria
X.F. Han
Affiliation:
Institute of Physics, Chinese Academy of Science, P.O.Box 603, Beijing 100080, P.R.China
F.M. Yang
Affiliation:
Institute of Physics, Chinese Academy of Science, P.O.Box 603, Beijing 100080, P.R.China
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Abstract

The microstructure of V stabilized RE3(Fe,V)29 (RE=Nd,Tb) has been investigated by transmission electron microscopy (TEM). The investigated samples were prepared by arc melting and subsequent annealing above 910°C. X-ray diffraction confirms that the samples can be indexed based on a monoclinic Nd3(Fe,Ti)29-type structure (3:29) with A2/m space group. Our TEM investigation confirms that Nd3(Fe,V)29 contains usually grains with 3:29 structure and A 2/m space group. In addition grains with rhombohedral Th2Zn17 structure are observed regularly. The Tb3(FeV)29 alloy consists also of grains with monoclinic Nd3(Fe,Ti)29-type structure and contains a high density of planer defects like crystallographic twins or antiphase boundaries. Twinning occurs preferably on (402) of the monoclinic 3:29 structure. No tetragonal RE(Fe,V)12 phase or Fe is found.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 577: Symposium H – Advanced Hard and Soft Magnetic Materials , 1999 , 315
Copyright
Copyright © Materials Research Society 1999

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References

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