Abstract The enthalpy of solution of Eu in Al and the standard molarenthalpy of formation of LnAl 2 (Ln = La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, and Yb) were determined by dissolution calorimetry, using a calorimeter based on liquid aluminium. Experimental results are compared with model predictions.
摘要 Eu 在 Al 中的溶解焓和 LnAl 2 的标准摩尔生成焓(Ln = La、Ce、Pr、Nd、Sm、Eu、Gd、Tb、Dy、Ho、Er、Tm 和 Yb)分别为通过溶解量热法测定,使用基于液体铝的量热计。实验结果与模型预测进行了比较。
Heat capacities from 400 to 1200 K of CaAl2, EuAl2, ErAl2 and of the intermediate valence compound YbAl2
作者:F. Merlo
DOI:10.1016/0040-6031(83)80134-8
日期:1983.6
intermediate valence compound YbAl, and of the isotypic phases CaAl,, EuAl, and ErAl, were measured in a drop calorimeter over the temperature range 400-1200 K. Whilst the heat capacity of the compounds of Ca, Eu and Er increases linearly with temperature, an anomalous trend is observed for YbAl,. The excess heat capacity displayed by YbAl, as regards the other rareearth single valence phases can be
中间价化合物 YbAl 和同型相 CaAl、EuAl 和 ErAl 的热含量在 400-1200 K 温度范围内在滴量热计中测量。而 Ca、Eu 和 Er 化合物的热容随温度线性增加,观察到 YbAl 的异常趋势。YbAl 显示的过剩热容,关于其他稀土单价相,可归因于与该化合物中发生的电子过程相关的促进焓,即在所检查的温度范围内三价镱百分比的持续增加。讨论了电子工艺先进程度的评价和正确选择合适的参考系统等问题。已经近似评估了促进摩尔焓,
Systematics in intermetallic compounds containing intermediate-valent ytterbium
作者:J.C.P. Klaasse、F.R. de Boer、P.F. de Châtel
DOI:10.1016/0378-4363(81)90078-4
日期:1981.7
Hall effect of Yb intermediate valent intermetallic compounds
作者:E. Cattaneo
DOI:10.1007/bf01303602
日期:1986.9
Finkel'shteyn; Fedorova; Yefremova, Physics of Metals and Metallography, 1989, vol. 68, # 2, p. 188 - 191