当前位置: X-MOL 学术J. Magn. Magn. Mater. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Magnetic properties and magneto-caloric effect (MCE) in Cu22Al18Ho22Tm20Gd18 amorphous ribbons
Journal of Magnetism and Magnetic Materials ( IF 2.7 ) Pub Date : 2020-11-01 , DOI: 10.1016/j.jmmm.2020.167270
Zhongqi Dong , Zhenjie Wang , Suhua Yin

Abstract The magnetic cooling (MC) method developed by using magneto-caloric effect (MCE) of magnetic solids is generally taken as an excellent alternative way to widely used vapor expansion/compression based refrigerator due to its more environmental-friendly and higher energy-efficiency. In present work, systematic investigations of the melt-spun Cu22Al18Ho22Tm20Gd18 amorphous ribbon in terms of glass formation ability, magnetic and MCE properties have been reported. The undercooled liquid region and reduced glassy transition temperature for Cu22Al18Ho22Tm20Gd18 amorphous ribbon reach 28 K and 0.57, respectively. A broad typical ferromagnetic to paramagnetic transition (FM-PM, second ordered) around TC ~ 33.6 K accompanied by a considerable MCE is found in Cu22Al18Ho22Tm20Gd18 amorphous ribbon. The peak magnetic entropy change, temperature averaged entropy change with 5 K lift and refrigerant capacity values for Cu22Al18Ho22Tm20Gd18 amorphous ribbon are 8.70 J/kgK, 8.65 J/kgK and 401.8 J/kg for ΔH = 0–5 T, respectively.

中文翻译:

Cu22Al18Ho22Tm20Gd18非晶带的磁性和磁热效应(MCE)

摘要 利用磁性固体的磁热效应(MCE)开发的磁冷却(MC)方法由于其更环保和更高的能效,被普遍认为是广泛使用的蒸汽膨胀/压缩式制冷机的一种很好的替代方式。 . 在目前的工作中,已经报道了熔纺 Cu22Al18Ho22Tm20Gd18 非晶带在玻璃形成能力、磁性和 MCE 性能方面的系统研究。Cu22Al18Ho22Tm20Gd18非晶带的过冷液体区和降低的玻璃化转变温度分别达到28 K和0.57。在 Cu22Al18Ho22Tm20Gd18 非晶带中发现了一个广泛的典型铁磁到顺磁转变(FM-PM,二阶)在 TC ~ 33.6 K 附近伴随着相当大的 MCE。峰值磁熵变,
更新日期:2020-11-01
down
wechat
bug