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- Title
1:13 phase formation mechanism and first-order magnetic transition strengthening characteristics in (La,Ce)FeSi alloys.
- Authors
Chen, Xiang; Chen, Yun-Gui; Tang, Yong-Bo; Xiao, Ding-Quan
- Abstract
The effects of the introduction of Ce to LaCeFeSi alloys on 1:13 phase formation mechanism, the first-order magnetic phase transition strengthening characteristics, and magnetocaloric property were studied, respectively. The results show that the formation mechanisms of 1:13 and LaFeSi phases in LaCeFeSi alloys are the same as those of CeFe and CeFe phases in Ce-Fe binary system, respectively. The substitution of Ce in 1:13 phase which is limited can make the first-order magnetic phase transition characteristics strengthen, which can make thermal and magnetic hysteresis increase, the temperature interval of temperature-induced phase transition decrease, and the critical magnetic field of field-induced magnetic phase transition ( H ) increase, respectively. Owing to the lattice shrink of 1:13 phase with the increase in Ce content, the Curie temperatures ( T ) show a linear decrease. The maximum change in magnetic entropy gradually increases due to the decrease in temperature interval of temperature-induced phase transition, but the relative cooling capacities are all about 80 J·kg at magnetic field of 2 T.
- Publication
Rare Metals, 2016, Vol 35, Issue 9, p691
- ISSN
1001-0521
- Publication type
Article
- DOI
10.1007/s12598-015-0527-0