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Microstructure, martensitic transitions, magnetocaloric, and exchange bias properties in Fe-doped Ni-Mn-Sn melt-spun ribbons
X. G. Zhao; M. Tong; C. W. Shih; B. Li; W. C. Chang; W. Liu; Z. D. Zhang
2013
Source PublicationJournal of Applied Physics
ISSN0021-8979
Volume113Issue:17
AbstractThe effects of Fe substitution for Ni on microstructure, phase transformations, magnetocaloric effect, and exchange-bias behavior of the Ni46-xFexMn43Sn11 (x = 0-3) alloy ribbons have been investigated. The free surface of as-spun Fe-doped ribbons shows the granular microstructure containing multiple shapes (the tree leaf-like, small columnar grain, etc.), while the ordered columnar grains are observed in fracture cross-section. The martensitic structural transition temperature (T-M) of as-annealed ribbons decreases from 240K for x = 0 to 185K for x = 3 due to the decrease in valence electron concentration, while the Curie temperature of the austenitic phase remains almost unchanged (T-C = 275 K). The positive values of magnetic entropy changes (+Delta S-M), around T-M, are 21.0, 29.1, 24.1, and 14.8 J/kg K for x = 0-3, respectively, while the negative -Delta S-M values vary in 3.0-3.5 J/kg K range around T-C, under a field change of 0-5T. The values of exchange-bias field (H-E) at 10K change in the range of 469 to 534 Oe and the coercivity (H-C) slightly decreases from 245 to 186 Oe, respectively, as x is increased. (C) 2013 American Institute of Physics.
description.department[zhao, x. g. ; shih, c. w. ; chang, w. c.] natl chung cheng univ, dept phys, chiayi 62102, taiwan. [zhao, x. g. ; tong, m. ; li, b. ; liu, w. ; zhang, z. d.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [zhao, x. g. ; tong, m. ; li, b. ; liu, w. ; zhang, z. d.] chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china. ; zhao, xg (reprint author), natl chung cheng univ, dept phys, chiayi 62102, taiwan. ; xgzhao@imr.ac.cn ; phywcc@ccu.edu.tw
KeywordAlloy
URL查看原文
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/71719
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
X. G. Zhao,M. Tong,C. W. Shih,et al. Microstructure, martensitic transitions, magnetocaloric, and exchange bias properties in Fe-doped Ni-Mn-Sn melt-spun ribbons[J]. Journal of Applied Physics,2013,113(17).
APA X. G. Zhao.,M. Tong.,C. W. Shih.,B. Li.,W. C. Chang.,...&Z. D. Zhang.(2013).Microstructure, martensitic transitions, magnetocaloric, and exchange bias properties in Fe-doped Ni-Mn-Sn melt-spun ribbons.Journal of Applied Physics,113(17).
MLA X. G. Zhao,et al."Microstructure, martensitic transitions, magnetocaloric, and exchange bias properties in Fe-doped Ni-Mn-Sn melt-spun ribbons".Journal of Applied Physics 113.17(2013).
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