ISSN:
1089-7550
Quelle:
AIP Digital Archive
Thema:
Physik
Notizen:
Both Co2ScSn and Ni2ScSn crystallize with the cubic L21 Heusler structure. The electrical resistivity, magnetization, and Mossbauer studies have shown that Co2ScSn undergoes a magnetic transition at Tc=238 K and Ni2ScSn is a paramagnet. When Ni is substituted for Co in (Co1−xNix)2ScSn, Tc decreases linearly with increasing Ni concentration x and goes to zero in the vicinity of x=0.40. The electronic specific heat coefficient γ is enhanced from 13 mJ/mol K2 for Co2ScSn (x=0.0) to 58 mJ/mol K2 for x=0.40. γ remains nearly constant from x=0.40 to x=0.50 as the sample moves away from the magnetic instability, and then decreases to about 5 mJ/mol K2 for Ni2ScSn (x=1.0). The γ enhancement will be discussed and compared with that observed in the other d-electron and f-electron systems.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1063/1.353704
Permalink