Термоэлектрические свойства экструдированного образца твердого раствора Bi0.85Sb0.15, модифицированного ZrО2
Year: 2023
Type: article
Abstract: The electrical conductivity (σ), thermoelectric power (α), Hall coefficient (RH), and thermal conductivity (κ) of unmodified and 0.5 wt % ZrO2-modified extruded samples of the Bi0.85Sb0.15 solid solution have been measured in the range ~77–300 K at a magnetic field strength of up to ~74 × 104 A/m. The results demonstrate that the addition of 0.5 wt % ZrO2 to Bi0.85Sb0.15 reduces the phonon component of its thermal conductivity, leading to an increase in its thermoelectric figure of merit (Z) to ~6.4 × 10–3 K–1. The use of the modified material is expected to considerably improve parameters of related low-temperature thermoelectric converters. At ~77 K, in both the unmodified and ZrO2-modified Bi0.85Sb0.15 solid solutions heat is transported largely by lattice vibrations.
Source: Неорганические материалы
Language: Russian
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W4394957799