Structural variations in the ternary system HfAl2-xCu x (x = 0.2-1.0)

Wen Heng Huang, Chi-Shen Lee*

*Corresponding author for this work

研究成果: Article同行評審

摘要

Synthesized ternary intermetallic phases HfAl2-xCux in a series with (x = 0.49, 0.88, 1.04) are characterized as Laves phase structures. X-ray diffraction revealed homogeneity within ranges 0.2 ≤ x ≤ 0.5 and 0.7 ≤ x ≤ 0.9 for structure types MgCu2 and MgNi 2, respectively. When Cu atoms gradually replaced the Al atoms, the structure type altered in the sequence MgCu2 → MgNi2 → MgZn2, and the Kagomé nets were distorted with varied bond lengths. Measurements of physical properties revealed these phases to be metallic, with resistances 4.35 (x = 0.5), 5.85 (x = 0.7), and 6.50 (x = 0.9) mΩ cm, respectively, at temperature 300 K. The coloring schemes reveal that, upon increasing the proportion of Cu atoms, the stability of these phases correlated with the arrangements of the Al and Cu atoms. Calculated electronic structures indicate that the bonding character is consistent with the experimentally observed phase width.

原文English
頁(從 - 到)1849-1856
頁數8
期刊Intermetallics
19
發行號12
DOIs
出版狀態Published - 1 十二月 2011

指紋 深入研究「Structural variations in the ternary system HfAl<sub>2-x</sub>Cu <sub>x</sub> (x = 0.2-1.0)」主題。共同形成了獨特的指紋。

引用此