We report on measurements of the temperature dependence of the electrical resistivity , thermopower , and thermal conductivity of Ti-Zr-Ni alloys between 10 and 300 K. A series of Ti-Zr-Ni quasicrystals (QCs) , , and and metallic glasses and was prepared to systematically study the compositional and structural dependences of their transport properties. The resistivity of all these alloys was found to be very weakly temperature dependent with a negative temperature coefficient of resistance. Further, the observed increase in electrical resistivity with increasing Ti/Zr ratio is most likely due to the increase in disorder. The against temperature curves exhibited a maximum between 20 and 50 K and a noticeable deviation from the expected linear behavior in at higher temperatures. Such observations in the thermopower of QCs have been attributed to the electron-phonon enhancement and phonon drag effect. The measured thermal conductivities were analyzed by separating the electronic and phonon contributions that provide a reasonable explanation for plateau-type feature in of QCs. Our present results suggest that the transport properties of glassy phase are influenced by the same mechanisms as those of quasicrystalline phase.
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15 September 2008
Research Article|
September 18 2008
Transport properties of Ti-Zr-Ni quasicrystalline and glassy alloys
Y. K. Kuo;
Y. K. Kuo
a)
1Department of Physics,
National Dong Hwa University
, Hualien 97401, Taiwan
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N. Kaurav;
N. Kaurav
1Department of Physics,
National Dong Hwa University
, Hualien 97401, Taiwan
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W. K. Syu;
W. K. Syu
1Department of Physics,
National Dong Hwa University
, Hualien 97401, Taiwan
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K. M. Sivakumar;
K. M. Sivakumar
2Department of Physics,
Radharaman Group of Institutes
, Ratibad, Bhopal, Madhya Pradesh 462046, India
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U. T. Shan;
U. T. Shan
3Department of Physics,
National Cheng Kung University
, Tainan 70101, Taiwan
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S. T. Lin;
S. T. Lin
3Department of Physics,
National Cheng Kung University
, Tainan 70101, Taiwan
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Q. Wang;
Q. Wang
4State Key Laboratory for Materials Modification, Department of Mechanical Engineering,
Dalian University of Technology
, Dalian 116024, People’s Republic of China
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C. Dong
C. Dong
4State Key Laboratory for Materials Modification, Department of Mechanical Engineering,
Dalian University of Technology
, Dalian 116024, People’s Republic of China
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a)
Author to whom correspondence should be addressed. Electronic mail: ykkuo@mail.ndhu.edu.tw.
J. Appl. Phys. 104, 063705 (2008)
Article history
Received:
April 16 2008
Accepted:
July 10 2008
Citation
Y. K. Kuo, N. Kaurav, W. K. Syu, K. M. Sivakumar, U. T. Shan, S. T. Lin, Q. Wang, C. Dong; Transport properties of Ti-Zr-Ni quasicrystalline and glassy alloys. J. Appl. Phys. 15 September 2008; 104 (6): 063705. https://doi.org/10.1063/1.2977721
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