The thermal conductivity of Al73Mn27-xFex Taylor phases

Stanić, Denis; Popčević, Petar; Smiljanić, Igor; Bihar, Željko; Lukatela, Jagoda; Leontić, Boran; Bilušić, Ante; Batistić, Ivo; Smontara, Ana

Pregled bibliografske jedinice broj: 424326

The thermal conductivity of Al73Mn27-xFex Taylor phases

Stanić, Denis; Popčević, Petar; Smiljanić, Igor; Bihar, Željko; Lukatela, Jagoda; Leontić, Boran; Bilušić, Ante; Batistić, Ivo; Smontara, Ana

The thermal conductivity of Al73Mn27-xFex Taylor phases // Materiali in tehnologije, 44 (2010), 1; 3-7 (podatak o recenziji nije dostupan, kongresno priopćenje, znanstveni)

CROSBI ID: 424326 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
The thermal conductivity of Al73Mn27-xFex Taylor phases

Autori
Stanić, Denis ; Popčević, Petar ; Smiljanić, Igor ; Bihar, Željko ; Lukatela, Jagoda ; Leontić, Boran ; Bilušić, Ante ; Batistić, Ivo ; Smontara, Ana

Izvornik
Materiali in tehnologije (1580-2949) 44 (2010), 1; 3-7

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, kongresno priopćenje, znanstveni

Ključne riječi
complex metallic alloys ; thermal conductivity ; spectral conductivity

Sažetak
The thermal conductivity (κ ) of Al73Mn27-xFex (x=0, 2, 4, 6) complex metallic alloys has been measured in the temperature interval from 2 to 300 K. All the alloys are Taylor (T) phases, except Al73Mn21Fe6, which is decagonal (d) quasicrystal. The behaviours of κ are typical for complex metallic alloys, i.e., a relatively small magnitude, a change of slope at about 50 K and an increase of the conductivity above 100 K. At room temperature the magnitude of κ for all the samples is between 2.7 and 3.3 W/mK, which is comparable to that of thermally insulating amorphous SiO2 and Zr/YO2 ceramics. The reason for such a low thermal conductivity is because both, the electronic and lattice conductivity are low. The electronic contribution to the thermal conductivity is low because of the large electrical resistivity of the samples. The lattice thermal conductivity is greatly reduced because of the enhanced umklapp process of the phonon scattering (caused by the large lattice constant) and by the disorder in the structure.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

Napomena
The paper (untitled "Thermal conductivity of T-Al73Mn27-xFex phases") was presented at the 16th International Scientific Meeting on Vacuum Science and Technique, Bohinj, Slovenija, (May 04-06, 2009)as a poster by Denis Stanić. This work was supported by the 6th Framework EU Network of Excellence 'Complex Metallic Alloys' (Contract No. NMP3-CT-2005-500140)

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:

Ante Bilušić (autor)