This title appears in the Scientific Report :
2010
Thermal Conductivity of Taylor Phase Al3(Mn,Pd) Complex Metallic Alloys
Thermal Conductivity of Taylor Phase Al3(Mn,Pd) Complex Metallic Alloys
Thermal conductivity, kappa, of Taylor phase T-Al73Mn27-xPdx (x = 0, 2, 4, 6) complex metallic alloys (CMAs) has been studied in the temperature interval from 2 K to 300 K. The characteristics of kappa are typical for the CMAs: a relatively small value, a change of slope at about 50 K and an increas...
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Personal Name(s): | Stanic, D. |
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Popcevic, P. / Smiljanic, .I. / Bihar, Z. / Bilusic, A. / Batistik, I. / Ivkov, J. / Heggen, M. / Feuerbacher, M. | |
Contributing Institute: |
Mikrostrukturforschung; IFF-8 |
Published in: | Croatica chemica acta, 83 (2010) S. 81 |
Imprint: |
Zagreb
Croatian Chemical Society
2010
|
Physical Description: |
81 |
Document Type: |
Journal Article |
Research Program: |
Grundlagen für zukünftige Informationstechnologien |
Series Title: |
Croatica Chemica Acta
83 |
Subject (ZB): | |
Publikationsportal JuSER |
Thermal conductivity, kappa, of Taylor phase T-Al73Mn27-xPdx (x = 0, 2, 4, 6) complex metallic alloys (CMAs) has been studied in the temperature interval from 2 K to 300 K. The characteristics of kappa are typical for the CMAs: a relatively small value, a change of slope at about 50 K and an increase of slope above 100 K. The value of kappa is between 2.7 W/m K and 3.7 W/m K at room temperature. The low thermal conductivity has it's origin in a complex structure: aperiodic on a short length scale, which leads to frequent electron scattering (i.e. to a low electronic contribution to the thermal conductivity), while the large lattice constant defines a small Brillouin zone that enhances umklapp scattering of extended phonons. Above 100 K the non-extended (localized) lattice vibrations are thermally excited, and hopping gives a new heat carrying channel resulting in typical increase of the thermal conductivity with temperature. |