The structure and thermal parameters of ordered Cu65Fe10Pd25 ternary alloy

被引：3

作者：

Ahmad, N. ^{[1
]}

Ziya, A. B. ^{[1
]}

Ibrahim, A. ^{[2
]}

Atiq, S. ^{[2
]}

Ahmad, S. ^{[1
]}

Bashir, F. ^{[3
]}

机构：

[1] Bahauddin Zakariya Univ, Dept Phys, Multan 60800, Pakistan

[2] Bahauddin Zakariya Univ, Inst Adv Mat, Multan 60800, Pakistan

[3] LCW Univ, Lahore, Pakistan

来源：

PHYSICA B-CONDENSED MATTER | 2015年 / 461卷

关键词：

Lattice parameter; Structure; X-ray diffraction; O-D transition; X-RAY-DIFFRACTION;

D O I：

10.1016/j.physb.2015.01.004

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Structural and thermal parameters have been studied in Cu65Fe10Pd25 alloy during order-disorder (O-D) transformation using differential scanning calorimetry (DSC) and high temperature X-ray diffraction (HTXRD). The results reveal that the Cu65Fe10Pd25 alloy undergoes an O-D transformation at T-c=797 K. The alloy shows L1(2) type ordering below T-c and has disordered face centered cubic (fcc) structure above The lattice parameter shows a positive deviation from Vegard's rule which may be related to the weakening of interatomic forces by the addition of Fe. The integrated intensity data obtained from the diffraction experiments was utilized to determine the coefficient of thermal expansion (alpha(T)), mean square amplitude of vibration ((u(2)) over bar (T)) and Debye temperatures (Theta(D)) during the O-D transformation. The abrupt change in the value of lattice parameter and coefficient of thermal expansion at T-c shows that the nature of O-D transition is first order. These results have been discussed by comparing them to those for Cu3Pd alloy. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：129 / 133

页数：5

共 19 条

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