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IMPACT OF ANNEALING TIME ON THE FORMATION OF NANOCRYSTAL IN AMORPHOUS FE75.5SI13.5CU1NB1B9 ALLOY AND THEIR ULTRA-SOFT MAGNETIC PROPERTIES.
- Source :
- Journal of the Bangladesh Academy of Sciences; 2016, Vol. 40 Issue 2, p137-145, 9p
- Publication Year :
- 2016
-
Abstract
- To observe the impact of the annealing time on the alloy structure and ultra-soft magnetic properties of Fe<subscript>75.5</subscript>Si<subscript>13.5</subscript>Cu<subscript>1</subscript>Nb<subscript>1</subscript>B<subscript>9</subscript>, the alloy was annealed in a controlled way in the temperature range 475 - 600°C for different annealing time from 5 to 30 min. Amorphosity of the ribbon and nanocrystalline state was evaluated by X-ray diffraction. Grain size and Si content increase with increasing annealing temperature and time; on the other hand lattice parameter decrease with increasing annealing temperature and time. The maximum permeability was observed at annealing temperature Ta = 525°C for 15 min, and thereafter it starts to decreases. Saturation magnetization increases with annealing temperature Ta for the samples and finally decreases during annealing at a temperature much higher than peak crystallization temperature. The results of the experimental observations are explained on the basis of existing theories of nanocrystalline amorphous metallic ribbons. [ABSTRACT FROM AUTHOR]
- Subjects :
- ANNEALING of crystals
AMORPHOUS alloys
MAGNETIC properties
GRAIN size
MAGNETIZATION
Subjects
Details
- Language :
- English
- ISSN :
- 03788121
- Volume :
- 40
- Issue :
- 2
- Database :
- Complementary Index
- Journal :
- Journal of the Bangladesh Academy of Sciences
- Publication Type :
- Academic Journal
- Accession number :
- 120563592
- Full Text :
- https://doi.org/10.3329/jbas.v40i2.30769