TY - JOUR
T1 - Glass formation, magnetic properties and magnetocaloric effect of ternary Ho-Al-Co bulk metallic glass
AU - Zhang, Huiyan
AU - Li, Ran
AU - Ji, Yunfei
AU - Liu, Fanmao
AU - Luo, Qiang
AU - Zhang, Tao
PY - 2012/11
Y1 - 2012/11
N2 - A ternary Ho-Al-Co system with high glass-forming ability (GFA) was developed and fully glassy rods with diameters up to 1 cm can be produced for the best glass former of Ho 55Al 27.5Co 17.5 alloy. The thermal stability and low-temperature magnetic properties of the Ho 55Al 27.5Co 17.5 bulk metallic glass (BMG) were studied. The magnetic transition temperature of this alloy is ∼14 K as determined by the thermomagnetic measurement. Two indicators, i.e. isothermal magnetic entropy change (ΔS M) and the relative cooling power (RCP), were adopted to evaluate the magnetocaloric effect (MCE) of the alloy under a low magnetic field up to 2 T, which can be generated by permanent magnets. The values of |ΔS M| and RCP are 7.98 J kg -1 K -1 and 191.5 J kg -1, respectively. The Ho 55Al 27.5Co 17.5 BMG with good MCE and high GFA provides an attractive candidate for magnetic refrigeration applications, like hydrogen liquefaction and storage.
AB - A ternary Ho-Al-Co system with high glass-forming ability (GFA) was developed and fully glassy rods with diameters up to 1 cm can be produced for the best glass former of Ho 55Al 27.5Co 17.5 alloy. The thermal stability and low-temperature magnetic properties of the Ho 55Al 27.5Co 17.5 bulk metallic glass (BMG) were studied. The magnetic transition temperature of this alloy is ∼14 K as determined by the thermomagnetic measurement. Two indicators, i.e. isothermal magnetic entropy change (ΔS M) and the relative cooling power (RCP), were adopted to evaluate the magnetocaloric effect (MCE) of the alloy under a low magnetic field up to 2 T, which can be generated by permanent magnets. The values of |ΔS M| and RCP are 7.98 J kg -1 K -1 and 191.5 J kg -1, respectively. The Ho 55Al 27.5Co 17.5 BMG with good MCE and high GFA provides an attractive candidate for magnetic refrigeration applications, like hydrogen liquefaction and storage.
KW - Bulk metallic glass
KW - Heavy rare-earth alloy
KW - Magnetic refrigeration
KW - Magnetocaloric effect
UR - https://www.scopus.com/pages/publications/84865685027
U2 - 10.1016/j.jmmm.2012.07.018
DO - 10.1016/j.jmmm.2012.07.018
M3 - 文章
AN - SCOPUS:84865685027
SN - 0304-8853
VL - 324
SP - 4064
EP - 4067
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
IS - 23
ER -