【摘要】 本文给出了Mn成分在25at.％左右,Al成分从0-14at.％变化的一些FeMnAl合金在2-7.5K温度区间内的低温比热测量结果.联系于电阻率随温度变化的反常行为,我们认为Al原子的外层电子可能已经进入合金的d带.比热中大的线性项来源于磁相互作用不均匀性的贡献.实验中没有发现起源于自旋原子团的常数项存在.更多还原

【Abstract】 Reported in this paper are the results of the specific heat measuremetns of someFeMnAl alloys with 25at.% of Mn and 0--14at.% of Al, in the temperature range of2--7.5 K. Considering the anomalous behaviour of the resistivity with temperature, weprefer that the valance electrons of Al atoms may have entered the d band of the alloys.The large linear term in specific heat results from the inhomogeneity of the magneticinteraction. No constant term, which is attributed to spin clusters is found above 2 K。更多还原