Magnetocaloric Properties of Fe-Ni-Cr Nanoparticles for Active Cooling

被引：94

作者：

Chaudhary, V. ^{[1
,2
,3
]}

Ramanujan, R. V. ^{[3
]}

机构：

[1] Nanyang Technol Univ, IGS, Singapore 639798, Singapore

[2] Nanyang Technol Univ, Energy Res Inst NTU ERI N, Singapore 637553, Singapore

[3] Nanyang Technol Univ, Sch Mat Sci Engn, Singapore 639798, Singapore

来源：

SCIENTIFIC REPORTS | 2016年 / 6卷

基金：

新加坡国家研究基金会;

关键词：

FE73.5SI13.5B9NB3CU1; METALLIC-GLASS; CORROSION-RESISTANCE; CALORIC MATERIALS; FIELD-DEPENDENCE; TEMPERATURE; TRANSITION; REFRIGERATION;

D O I：

10.1038/srep35156

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Low cost, earth abundant, rare earth free magnetocaloric nanoparticles have attracted an enormous amount of attention for green, energy efficient, active near room temperature thermal management. Hence, we investigated the magnetocaloric properties of transition metal based (Fe70Ni30)(100-x)Cr-x (x = 1, 3, 5, 6 and 7) nanoparticles. The influence of Cr additions on the Curie temperature (T-C) was studied. Only 5% of Cr can reduce the T-C from similar to 438 K to 258 K. These alloys exhibit broad entropy v/s temperature curves, which is useful to enhance relative cooling power (RCP). For a field change of 5 T, the RCP for (Fe70Ni30)(99)Cr-1 nanoparticles was found to be 548 J-kg(-1). Tunable T-C in broad range, good RCP, low cost, high corrosion resistance and earth abundance make these nanoparticles suitable for low-grade waste heat recovery as well as near room temperature active cooling applications.

引用

页数：9

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