Nanocrystallization effects on the specific heat of Fe-Co-Nb-B amorphous alloy

被引：8
|
作者：
Blazquez, J. S. [1 ]
Millan, M. [1 ]
Conde, C. F. [1 ]
Franco, V. [1 ]
Conde, A. [1 ]
Lozano-Perez, S. [2 ]
机构：
[1] Univ Seville, CSIC, Dept Fis Mat Condensada, ICMSE, E-41080 Seville, Spain
[2] Univ Oxford, Dept Mat, Oxford OX1 3PH, England
来源：
JOURNAL OF NON-CRYSTALLINE SOLIDS | 2008年 / 354卷 / 47-51期
关键词：
Amorphous metals; metallic glasses; Nanocrystals;
D O I：
10.1016/j.jnoncrysol.2008.05.075
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Specific heat at constant pressure, C-p, was measured on amorphous, nanocrystalline and fully crystalline samples of Fe60Co18Nb6B16 alloy. Magnetic and calorimetric measurements agree, describing a continuously decreasing Curie temperature of the amorphous phase. A clear enhancement of Cp over the Dulong-Pettit limit has been observed (from 14% to 25 %). Part of the enhancement is due to magnetic (mainly amorphous phase) and electronic contributions, although an excess volume can be inferred from the high value of the slope of Cp versus temperature. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：5135 / 5137
页数：3
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