Magnetic and magnetocaloric properties of ternary Gd-Co-Al bulk metallic glasses

作者：Fu, H.^*; Zou, M.

来源：Journal of Alloys and Compounds, 2011, 509(13): 4613-4616.

DOI：10.1016/j.jallcom.2011.01.126

• Rare earth
• Bulk metallic glass
• Magnetocaloric effect

Bulk metallic glasses (BMGs) with compositions of Gd(55)Co(x)Al(45-x) (15 <= x <= 30) and Gd(60)Co(y)Al(40-y) (15 <= y <= 30) were synthesized by an injection casting technique. Temperature dependence of magnetization of the BMGs indicates that their Curie temperatures can be tailored between 96 and 143 K by varying Gd and Co concentration. The magnetic entropy changes of the BMGs are greater than 9.0 J/kg K except for the Gd(55)Co(30)Al(15) glass that exhibits a reduced magnetization due to its large Co content. The relative cooling powers of the BMGs are greater than those of any other crystalline compounds and decrease with the increasing Co content.

• 出版日期2011-3-31
• 单位电子科技大学