Formation of the RFe/sub 5/ phase by rapid solidification
Journal Article
·
· Appl. Phys. Commun.; (United States)
OSTI ID:6657216
As-cast Fe-rich Fe-Nd alloys show a mixture of a-Fe and Fe/sub 17/Nd/sub 2/ phases. No stable Fe/sub 5/Nd phase has been observed in this system. However, very recently x-ray diffraction studies on melt-spun Fe/sub 0.985/ Nd/sup 0.115/ ribbons have shown that the as-spun ribbon has a CaCu/sub 5/-type structure. In this study the authors examine the presence of this phase in other rare-earth iron melt-spun alloys using x-ray diffraction together with magnetic and Moessbauer measurements. Thermomagnetic data show that the Curie temperature of the as-quenched phase is greater than that of the stable Fe/sub 17/R/sub 2/ phase (T/sub c/approx.50/sup 0/C) and it ranges from around 100 to 200/sup 0/C. Hysteresis loop measurements on as-quenched ribbons show a relatively high anisotropy and in some samples a coercivity around 1 kOe. Moessbauer measurements were carried out in both systems. The possibility of presence of the metastable 1:5 phase in the melt-spun samples will be discussed on the basis of Moessbauer parameters.
- Research Organization:
- Kansas State Univ., Manhattan
- OSTI ID:
- 6657216
- Report Number(s):
- CONF-8511278-
- Journal Information:
- Appl. Phys. Commun.; (United States), Journal Name: Appl. Phys. Commun.; (United States) Vol. 6:1; ISSN APCOD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ALLOYS
COERCIVE FORCE
COHERENT SCATTERING
CURIE POINT
DIFFRACTION
HYSTERESIS
IRON ALLOYS
MAGNETIC PROPERTIES
METALLIC GLASSES
MOESSBAUER EFFECT
NEODYMIUM ALLOYS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
RARE EARTH ALLOYS
SCATTERING
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
X-RAY DIFFRACTION
360104* -- Metals & Alloys-- Physical Properties
ALLOYS
COERCIVE FORCE
COHERENT SCATTERING
CURIE POINT
DIFFRACTION
HYSTERESIS
IRON ALLOYS
MAGNETIC PROPERTIES
METALLIC GLASSES
MOESSBAUER EFFECT
NEODYMIUM ALLOYS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
RARE EARTH ALLOYS
SCATTERING
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
X-RAY DIFFRACTION