Abstract: The conditions for the synthesis of compounds based on rare earth elements (REE) of the compositions Y2O3@SmS, (Y0.90Gd0.10)2O3@SmS and (Y0.99Gd0.01)2O3@SmS were optimized with a core-shell type nanostructure. The optimization process consisted in finding the minimum times and optimal temperatures at each stage of synthesis to stabilize the phase of Y and Gd oxides, as well as complete conversion to SmS in the studied composites after successive stages of sulfidation and annealing of the initial precursors. The thermoelectric properties in the temperature range T = 298−873 K were studied and compared with the literature data for thermoelectric compounds based on REE. For connection (Y0.99Gd0.01)2O3@SmS at T = 873 K, the values of the Seebeck coefficient S = −94 µV/K, the resistivity ρ = 17 µ · m and the total thermal conductivity coefficient κtot = 1.50 W/m · K. The maximum achieved value of the thermoelectric ZT parameter for the connection (Y0.99Gd0.01)2O3@SmS reaches values of ZT = 0.56 at T = 873 K, which is a promising result in comparison with other thermoelectrics based on rare earth elements

Cite: Sotnikov A.V. , Bakovets V.V. , Filatova I.Y.
Thermoelectric properties of Y2O3@SmS and (YxGd1−x )2O3@SmS with a core-shell type nanostructure
Physics of the Solid State. 2024. V.66. N2. P.183-187. DOI: 10.61011/PSS.2024.02.57914.266

Original: Сотников А.В. , Баковец В.В. , Филатова И.Ю.
Термоэлектрические свойства соединений Y2O3@SmS и (YxGd1−x )2O3@SmS c наноструктурой типа ядро–оболочка
Физика твердого тела. 2024. Т.66. №2. С.190-197. DOI: 10.61011/FTT.2024.02.57242.266 РИНЦ

Dates:

Submitted:	Dec 1, 2023
Accepted:	Jan 18, 2024
Published print:	Jun 28, 2024

Identifiers: No identifiers

Citing: Пока нет цитирований

Altmetrics: