Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: skutterudit

Sortuj według:

Ogranicz wyniki do:

Thermoelectric properties of Ni0.15Co3.85Sb12 and Fe0.2Ni0.15Co3.65Sb12 skutterudites prepared by HPHT method

Kong L., Ma H., Zhang Y., Guo X., Sun B., Liu B., Liu H., Liu B., Chen J., Jia X.

Materials Science Poland

2017

Vol. 35, No. 3

496--500

N-type polycrystalline skutterudite compounds Ni0.15Co3.85Sb12 and Fe0.2Ni0.15Co3.65Sb12 with the bcc crystal structure were synthesized by high pressure and high temperature (HPHT) method. The synthesis time was sharply reduced to approximately half an hour. Typical microstructures connected with lattice deformations and dislocations were incorporated in the samples of Ni0.15Co3.85Sb12 and Fe0.2Ni0.15Co3.65Sb12 after HPHT. Electrical and thermal transport properties were meticulously researched in the temperature range of 300 K to 700 K. The Fe0.2Ni0.15Co3.65Sb12 sample shows a lower thermal conductivity than that of Ni0.15Co3.85Sb12. The dimensionless thermoelectric figure-of-merit (zT) reaches the maximal values of 0.52 and 0.35 at 600 K and 700 K respectively, for Ni0.15Co3.85Sb12 and Fe0.2Ni0.15Co3.65Sb12 samples synthesized at 1 GPa.

Grzechotki termoelektryczne : związki o strukturze wypełnionego skutteruditu

Suski W.

Wiadomości Chemiczne

2001

[Z] 55, 7-8

693--714

In a brief introduction a general description of thermoelectricity, thermoelectric materials and their characteristics, and early investigation are given. Then the skutterudite structure is discussed with the emphasis on the atomic displacement parameters (ADP). The presented properties concern magnetism, superconductivity as well as the behavior indicating the presence of strongly correlated electronic states in some skutterudites. Particular attention is devoted to the heavy fermion and non--Fermi liquid states, and intermediate valence. Finally, some remarks about band structure and perspective of improving the thermoelectric properties of the filled skutterudites are considered.