NIMTE OpenIR  > 2017专题
Enhanced caloric effect induced by magnetoelastic coupling in NiMnGaCu Heusler alloys: Experimental study and theoretical analysis
Zhao, Dewei; Castan, Teresa; Planes, Antoni; Li, Zongbin; Sun, Wen; Liu, Jian
2017
发表期刊PHYSICAL REVIEW B
卷号96期号:22
摘要On the basis of a phenomenological Landau model combined with comprehensive experimental studies, the magnetostructural transition behavior and field induced caloric effects for NiMnGaCu Heusler alloys have been investigated. In Ni50Mn25-xGa25Cux alloys with x = 5.5, 6, and 6.5, both magnetocaloric entropy change (Delta S) and elastocaloric temperature change (Delta T) increase with the increment of Cu content. The maximum Delta S of 1.01 J/molK and Delta T of 8.1 K are obtained for the alloy with x = 6.5. In order to explore the physical origin behind the large caloric effect, here we quantitatively propose a crucial coefficient of magnetoelastic coupling (kappa) over tilde. by utilizing a thermodynamic formalism within the framework of the Landau approach. It has been verified that the enhancement of the strength of magnetoelastic coupling between lattice and magnetic freedoms results in the increased caloric response for NiMnGaCu alloys. Thus, the strengthened coupling of the magnetoelastic effect can be considered as an effective way to improve the caloric performance for these alloys having the same sign of magnetic and elastic entropy changes contributed to the total caloric effect.
关键词Shape-memory Alloys Martensitic-transformation Room-temperature Giant Transitions Recovery
学科领域Chemistry
语种英语
文献类型期刊论文
条目标识符http://ir.nimte.ac.cn/handle/174433/17482
专题2017专题
推荐引用方式
GB/T 7714
Zhao, Dewei,Castan, Teresa,Planes, Antoni,et al. Enhanced caloric effect induced by magnetoelastic coupling in NiMnGaCu Heusler alloys: Experimental study and theoretical analysis[J]. PHYSICAL REVIEW B,2017,96(22).
APA Zhao, Dewei,Castan, Teresa,Planes, Antoni,Li, Zongbin,Sun, Wen,&Liu, Jian.(2017).Enhanced caloric effect induced by magnetoelastic coupling in NiMnGaCu Heusler alloys: Experimental study and theoretical analysis.PHYSICAL REVIEW B,96(22).
MLA Zhao, Dewei,et al."Enhanced caloric effect induced by magnetoelastic coupling in NiMnGaCu Heusler alloys: Experimental study and theoretical analysis".PHYSICAL REVIEW B 96.22(2017).
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Zhao, Dewei]的文章
[Castan, Teresa]的文章
[Planes, Antoni]的文章
百度学术
百度学术中相似的文章
[Zhao, Dewei]的文章
[Castan, Teresa]的文章
[Planes, Antoni]的文章
必应学术
必应学术中相似的文章
[Zhao, Dewei]的文章
[Castan, Teresa]的文章
[Planes, Antoni]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。