Thermal conductivity of taylor phase Al3 (Mn, Pd) complex metalic alloys

Stanić, Denis; Popčević, Petar; Smiljanić, Igor; Bihar, Željko; Bilušić, Ante; Batistić, Ivo; Ivkov, Jovica; Hegen, M.; Feurerbacher, M.

Pregled bibliografske jedinice broj: 425480

Thermal conductivity of taylor phase Al3 (Mn, Pd) complex metalic alloys

Stanić, Denis; Popčević, Petar; Smiljanić, Igor; Bihar, Željko; Bilušić, Ante; Batistić, Ivo; Ivkov, Jovica; Hegen, M.; Feurerbacher, M.

Thermal conductivity of taylor phase Al3 (Mn, Pd) complex metalic alloys // Croatica chemica acta, 83 (2010), 1; 81-86 (međunarodna recenzija, članak, znanstveni)

CROSBI ID: 425480 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Thermal conductivity of taylor phase Al3 (Mn, Pd) complex metalic alloys

Autori
Stanić, Denis ; Popčević, Petar ; Smiljanić, Igor ; Bihar, Željko ; Bilušić, Ante ; Batistić, Ivo ; Ivkov, Jovica ; Hegen, M. ; Feurerbacher, M.

Izvornik
Croatica chemica acta (0011-1643) 83 (2010), 1; 81-86

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
complex metallic alloys ; thermal conductivity ; spectral conductivity

Sažetak
Thermal conductivity, κ, 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. Characteristic of κ are typical for CMAs: relatively small in magnitude, change of slope at about 50 K and increase above 100 K. At room temperature the magnitude of κ is between 2.7 W/mK and 3.7 W/mK. Such a low thermal conductivity originates in complex structure: aperiodic in short length scale, that leads to frequent electron scattering (i.e. to low electronic contribution to the thermal conductivity), while large lattice constant defines a small Brillouin zone that enhances Umklapp scattering of extended phonons. Above 100 K non-extended (localized) lattice vibrations are thermally excited, the hopping gives a new heat carrying channel resulting in the typical increase of the thermal conductivity with temperature.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

Napomena
The paper was published as a regular paper in a special issue of Croatica Chemica Acta dedicated to Professor Boran Leontić, where mostly papers presented at the international workshop "Frontiers in Complex Metallic Alloys". (cma2008.ifs.hr) were published.

POVEZANOST RADA

Projekti:
MZOS-035-0352826-2847 - Modeliranje fizikalnih svojstava materijala s izraženom frustracijom ili neredom (Tutiš, Eduard, MZOS ) ( CroRIS)
MZOS-035-0352826-2848 - Transport topline i naboja u jako frustriranim magnetima i srodnim materijalima (Smontara, Ana, MZOS ) ( CroRIS)
MZOS-119-1191458-0512 - Niskodimenzionalni jako korelirani vodljivi sustavi (Barišić, Slaven, MZOS ) ( CroRIS)
MZOS-177-0352826-0478 - Transportna i magnetska svojstva nanostrukturiranih kompleksnih metalnih spojeva (Bilušić, Ante, MZOS ) ( CroRIS)
MZOS-286-0000000-3212 - Radioaktivnost u okolišu, detekcija i primjena (Planinić, Josip, MZOS ) ( CroRIS)

Ustanove:
Institut za fiziku, Zagreb,
Prirodoslovno-matematički fakultet, Zagreb,
Prirodoslovno-matematički fakultet, Split,
Sveučilište u Osijeku - Odjel za fiziku

Profili:

Jovica Ivkov (autor)