Thermal conductivity of Taylor phases T-Al73Mn27 (CROSBI ID 740544)
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Podaci o odgovornosti
Stanić, Denis ; Popčević, Petar ; Smiljanić, Igor ; Bilušić, Ante ; Batistić, Ivo ; Ivkov, Jovica ; Smontara, Ana
engleski
Thermal conductivity of Taylor phases T-Al73Mn27
Thermal conductivity coefficient, , of Taylor phase T-Al73Mn27 complex metallic alloy with giant unit cell has been studied in the temperature interval from 2 K to 300 K. is relatively small in magnitude (comparable to that of thermal insulators), have a slope-change at about 50 K and increases up to 300 K. Such a low originates in complex structure: aperiodic in short length scale, that leads to frequent electron scattering and consequent low electron contribution to the thermal conductivity, while large lattice constant defines a small Brillouin zone that enhances umklapp scattering of extended phonons, and suppressing lattice thermal conductivity. Above ~100 K hopping of localized lattice vibrations gives an additional heat-carrying channel.
electrical conductivity ; Lorentz number ; thermal conductivity
The paper was presented at the 6th International Conferenceon Aperiodic Crystals(APERIODIC’09) (13-18 September 2009, Liverpool, UK) as a poster by Jovica Ivkov.
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Podaci o prilogu
012034-1-012034-5.
2010.
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objavljeno
Podaci o matičnoj publikaciji
Journal of physics. Conference series
1742-6588
Podaci o skupu
Nepoznat skup
ostalo
29.02.1904-29.02.2096