부산대학교 도서관

To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.jallcom.2005.01.136 Byline: L. Kolwicz-Chodak (a), Z. Tarnawski (a), H. Figiel (a), A. Budziak (a), T. Dawid (a), L. Havela (b), A. Kolomiets (b), N.-T.H Kim-Ngan (c) Keywords: Specific heat; Phase transition; Hydrides Abstract: Specific heat (SH) measurements of RMn.sub.2(H,D).sub.x (R=Gd, Tb, Er, Nd; x=0 -3.0) powders have been performed in the temperature range of 50-320aK by a quasi-adiabatic technique. The hydrogenation implies a large increase of the Neel temperature (T.sub.N), an enormous enhancement of the SH peak at T.sub.N, and a large excessive specific heat in the whole temperature range studied. Structured SH anomalies were observed around the temperature of the antiferromagnetic phase transition. Author Affiliation: (a) Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, 30-059 Krakow, Poland (b) Charles University, Faculty of Mathematics and Physics, Department of Electronic Structures, 12116 Prague 2, Czech Republic (c) Institute of Physics, Pedagogical University, 30-084 Krakow, Poland Article History: Received 8 September 2004; Revised 31 December 2004; Accepted 7 January 2005