The existence of giant magnetocaloric effect and laminar structure in Fe73.5 xCrxSi13.5B9Nb3Cu1
Amorphous soft magnetic ribbons Fe73.5 xCrxSi13.5B9Nb3Cu1 (x¼1–5) have been fabricated by rapid quenching on a single copper wheel. The differential scanning calorimetry (DSC) patterns showed that the crystallization temperature ofa-Fe(Si) phase is ranging from 542 to 5691C, a little higher than...
Saved in:
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2016
|
| Subjects: | |
| Online Access: | http://repository.vnu.edu.vn/handle/VNU_123/10147 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Institution: | Vietnam National University, Hanoi |
| Language: | English |
| Summary: | Amorphous soft magnetic ribbons Fe73.5 xCrxSi13.5B9Nb3Cu1
(x¼1–5) have been fabricated by rapid quenching on a single copper
wheel. The differential scanning calorimetry (DSC) patterns showed that the crystallization temperature ofa-Fe(Si) phase is ranging
from 542 to 5691C, a little higher than that of pure Finemet (x¼0). With the same annealing regime, the crystallization volume fraction
as well as the particle size ofa-Fe(Si) crystallites decreased with increasing Cr amount substituted for Fe in studied samples. Especially,
the interesting fact is that the laminar structure of heat-treated ribbons on the surface contacted to copper wheel in the fabricating
process has been firstly discovered and explained to be related to the existence of Cr in studied samples. The hysteresis loop measurement
indicated that there is the pinning of displacement of domain walls. The giant magnetocaloric effect (GMCE) has been found in
amorphous state of the samples. After annealing, the soft magnetic properties of investigated nanocomposite materials are desirably
improved. |
|---|