Metastable phase in annealed amorphous Ni /sub 0. 8-x/ Fe /sub x/ B /sub 0. 12/ Si /sub 0. 08/ ribbons: structural and magnetic studies
Amorphous Ni /sub 0.8- x / Fe /sub x/ B /sub 0.12/ Si /sub 0.08/ ribbons with 0 < x < 0.16 have been prepared by the single roller technique. The samples were characterized by X-ray and DTA studies. Chemical composition has been determined. Magnetic studies were carried out in the rangee 4.2-300 K with 0.5 < H < 15T and the range 293-800 K with 0 < H < 1 T. The samples crystallized to a f.c.c. Ni-like phase at 446/sup 0/C and developed into complex borides etc. at 496/sup 0/C. Samples were heated at 10/sup 0/min./sup -1/ to just above 446/sup 0/C in order to obtain the f.c.c. phase and then studied. While for x=0 though one has f.c.c. Ni phase it is not magnetic even at 4.2K. However with x=0,024, T /sub c/ sharply rises to 460K then rises progressively with the increase in X as in crystalline Ni-Fe alloys. Both T /sub c/ and magnetization are much lower in crystallized f.c.c. phase as compared to Fe-Ni alloys. The results are discussed.
- Research Organization:
- Laboratoire de Magnetisme, CNRS F-92195 Meudon Cedex
- OSTI ID:
- 5056204
- Journal Information:
- IEEE Trans. Magn.; (United States), Vol. MAG-20:5
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
BORON ALLOYS
CRYSTALLIZATION
MAGNETIC PROPERTIES
IRON ALLOYS
METALLIC GLASSES
NICKEL BASE ALLOYS
SILICON ALLOYS
AMORPHOUS STATE
ANNEALING
CHEMICAL COMPOSITION
DIFFERENTIAL THERMAL ANALYSIS
FCC LATTICES
LOW TEMPERATURE
MAGNETIZATION
MEDIUM TEMPERATURE
METASTABLE STATES
QUATERNARY ALLOY SYSTEMS
RIBBON-TO-RIBBON METHOD
ULTRALOW TEMPERATURE
VERY LOW TEMPERATURE
X-RAY DIFFRACTION
ALLOY SYSTEMS
ALLOYS
COHERENT SCATTERING
CRYSTAL GROWTH METHODS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CUBIC LATTICES
DIFFRACTION
ENERGY LEVELS
EXCITED STATES
HEAT TREATMENTS
NICKEL ALLOYS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
SCATTERING
THERMAL ANALYSIS
360102* - Metals & Alloys- Structure & Phase Studies