Phonon-enhanced thermoelectric power of Y-Al-Ni-Co decagonal approximnat (CROSBI ID 740838)
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Podaci o odgovornosti
Dolinšek, J. ; Smontara, Ana ; Gille, P.
engleski
Phonon-enhanced thermoelectric power of Y-Al-Ni-Co decagonal approximnat
We have investigated anisotropic electrical resistivity and thermoelectric power of the ypsilon-phase Al–Ni–Co (Y–Al–Ni–Co) decagonal approximant with composition Al76Co22Ni2. The crystalline-direction-dependent measurements were performed along three orthogonal directions a*, b and c of the Y–Al–Ni–Co unit cell, where (a, c) monoclinic atomic planes are stacked along the perpendicular b direction. Anisotropic electrical resistivity is low in all crystalline directions, appearing in the order ρa* > ρc > ρb and showing positive temperature coefficient typical of electron-phonon scattering mechanism. Thermopower shows electron-phonon enhancement effect. Anisotropic bare thermopower (in the absence of electron-phonon interactions) was extracted, appearing in the same order as the resistivity, ΙSa*bare/TΙ > Ι Scbare/T Ι > Ι Sbbare/T Ι.
thermoelectric power; Y-Al-Ni-Co decagonal approximnat
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Podaci o prilogu
64-66.
2009.
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objavljeno
10.1524/zkri.2009.1033
Podaci o matičnoj publikaciji
Zeitschrift für Kristallographie
0044-2968
Podaci o skupu
Nepoznat skup
ostalo
29.02.1904-29.02.2096