TY - JOUR
T1 - Evolution of magnetostructural transition and magnetocaloric effect with Al doping in MnCoGe1-xAlx compounds
AU - Bao, Lifu
AU - Hu, Fengxia
AU - Wu, Rongrong
AU - Wang, Jianping
AU - Chen, Liming
AU - Sun, Jirong
AU - Shen, Baogen
AU - Li, Lain-Jong
AU - Zhang, Bei
AU - Zhang, Xixiang
N1 - KAUST Repository Item: Exported on 2020-10-01
PY - 2014/1/3
Y1 - 2014/1/3
N2 - The effect of Al doping in MnCoGe1-xAlx compounds has been investigated. The substitution of Al for Ge enhances Mn-Mn covalent bonding by shortening the distance of nearest Mn atom layers, and thus stabilizes the hexagonal structure. As a result, first-order magnetostructural transition between ferromagnetic martensite and paramagnetic austenite takes place for the optimized compositions (x = 0.01, 0.02). Accompanied with the magnetostructural transition, large magnetocaloric effect (MCE) is observed. More doping of Al(x = 0.03, 0.04) leads to the separation of magnetic and structural transitions and remarkable reduction of MCE. © 2014 IOP Publishing Ltd.
AB - The effect of Al doping in MnCoGe1-xAlx compounds has been investigated. The substitution of Al for Ge enhances Mn-Mn covalent bonding by shortening the distance of nearest Mn atom layers, and thus stabilizes the hexagonal structure. As a result, first-order magnetostructural transition between ferromagnetic martensite and paramagnetic austenite takes place for the optimized compositions (x = 0.01, 0.02). Accompanied with the magnetostructural transition, large magnetocaloric effect (MCE) is observed. More doping of Al(x = 0.03, 0.04) leads to the separation of magnetic and structural transitions and remarkable reduction of MCE. © 2014 IOP Publishing Ltd.
UR - http://hdl.handle.net/10754/563330
UR - https://iopscience.iop.org/article/10.1088/0022-3727/47/5/055003
UR - http://www.scopus.com/inward/record.url?scp=84892411461&partnerID=8YFLogxK
U2 - 10.1088/0022-3727/47/5/055003
DO - 10.1088/0022-3727/47/5/055003
M3 - Article
SN - 0022-3727
VL - 47
SP - 055003
JO - Journal of Physics D: Applied Physics
JF - Journal of Physics D: Applied Physics
IS - 5
ER -