The lowhyphen;temperature specific heats of Y2(Co1minus;xAlx)17alloys

摘要

The specific heats of Y2(Co1minus;xAlx)17alloys were measured in the temperature range 1.8ndash;19.5 K forx=0, 0.08, and 0.12. The data below 11 K are well described byC=ggr;T+bgr;T3. Values of ggr; and bgr; for the three samples were obtained. No evidence for aT3/2term existed. This is not surprising due to the high Curie temperatures. The increase in the value of ggr; from alloying is significantly higher than that calculated by assuming a rigidhyphen;band model ignoring volumehyphen;change effects.