The founders of the journal: National Academy of Sciences of Ukraine; Institute of Thermoelectricity NAS of Ukraine and MES of Ukraine. Media Identifier: R30-02553 (Registered by the National Council of Television and Radio Broadcasting of Ukraine. Decision No. 1189 dated April 11, 2024). The journal is published in two languages - English and Ukrainian. ISSN 1607-8829 (English); ISSN 1726-7714 (Ukrainian). Journal indexed in Scopus (since 2012). SJR 2024 - 0.101; quartile - Q4. The journal is conceived as a specialized publication on thermoelectricity to concentrate information in this field, provide convenience for readers, and ensure qualified peer review of articles. The journal is published by the Institute of Thermoelectricity. The International Thermoelectric Academy actively participates in the journal’s activities, with its members serving on the international editorial board. The journal has been in publication since 1993, with four issues released annually. Over this time, its popularity has significantly increased, and it is now distributed in 40 countries worldwide. The journal’s volume is 100 A4-format pages. The reviewers of the journal are highly qualified experts in thermoelectricity, most of whom are members of the International Thermoelectric Academy.
Інститут термоелектрики Національної академії наук та Міністерства освіти і науки України
Effective Thermoelectric Coefficients for an Exactly Solvable Two-Dimensional Three-Phase Composite
Effective thermoelectric coefficients are found for a two-dimensional three-phase macroscopically disordered medium. To obtain such a value, the method of sequential averaging is used, which allows the method of isomorphism to be used for the two-phased variant. Also here is given a comparison with the mean-field approximation iddle field. It has been shown that the conditions that determine exact values ​​of the effective kinetic coefficients of D – media are insufficient for three-phase media.
Copyright (c) 2026 А.О. Снарський, І.М. Іванова, В.В. Федотов https://creativecommons.org/licenses/by/4.0
Theory of Dipole-Exchange Spin Waves in a Ferromagnetic Nanotube in the Presence of a Thermoelectrically Induced Spin-Transfer Torque
A theoretical study of dipole–exchange spin waves in a conducting ferromagnetic nanotube subjected to a longitudinal temperature gradient is presented. The temperature gradient via the Seebeck effect generates an electric current, which becomes spin-polarized in the ferromagnet and gives rise to a spin-transfer torque acting on the magnetization. The magnetization dynamics is described within the Landau–Lifshitz–Gilbert framework augmented by the Zhang–Li torque terms corresponding to adiabatic and nonadiabatic spin transport. An analytical dispersion relation for spin waves in a thin-walled nanotube with uniaxial anisotropy is derived, taking into account both exchange and dipolar interactions. It is shown that the thermoelectrically induced spin-polarized current leads to a Doppler-like shift of the spin-wave spectrum and modifies the effective damping. A critical temperature gradient is obtained at which the nonadiabatic torque compensates the intrinsic Gilbert damping, resulting in the onset of spin wave generation. Numerical estimates for Permalloy nanotubes demonstrate that the effect can be significant for experimentally accessible parameters. The results reveal a direct coupling between thermoelectric charge transport and spin-wave dynamics in curved magnetic nanostructures, highlighting the potential of ferromagnetic nanotubes as elements of spin-caloritronic and thermoelectric devices.
Copyright (c) 2026 В.В. Куліш, С.І. Єрьомін https://creativecommons.org/licenses/by/4.0
Thermoelectric Power Factor of Flat-Layer Semiconductor Structures
The influence of nanostructuring on the thermoelectric power factor of flat-layer semiconductor structures is studied in the quasi-classical one-miniband approximation. The change in the pulse relaxation time of current carriers in 2D structures as compared to their 3D counterparts in the case of mixed scattering of the pulse by acoustic phonons and point defects in the case of arbitrary statistics is taken into consideration. The analytical dependence of the thermoelectric power factor on the chemical potential and the width of the conduction miniband in the direction of the superlattice axis is established.
Copyright (c) 2026 В.С. Закордонець https://creativecommons.org/licenses/by/4.0
Research on a New Semiconductor Thermoelectric Material n-Zr1-xNbxNiSn. II. Property Modeling
The electronic structure, thermodynamic, structural, energy, and electrokinetic properties of the semiconductor thermoelectric material Zr1-xNbxNiSn were modeled using density functional theory. The nature of the generated energy states and mechanisms of electrical conductivity were analyzed. It is shown that when Nb atoms are introduced into the structure of the ZrNiSn compound in varying ratios, two processes occur simultaneously: Zr atoms are substituted by Nb atoms, resulting in a substitutional solid solution, and Nb atoms also occupy the tetrahedral voids within the structure, leading to the formation of an inclusion solid solution. Structural changes create two types of donor defects in Zr1-xNbxNiSn, along with their corresponding energy states, which are essential for achieving maximum efficiency in converting thermal energy to electrical energy. Modeling of thermoelectric properties showed that the semiconductor solid solution of Zr1-xNbxNiSn is a promising thermoelectric material.
Copyright (c) 2026 В.А. Ромака, В.В. Ромака, Ю.В. Стадник, Л.П. Ромака, А.М. Горинь, В.З. Пашкевич, П.І. Гаранюк https://creativecommons.org/licenses/by/4.0
Low Temperature P-type Inorganic Thermoelectric Telluride (TET) Material: A Review
Renewable energy sources will be essential for solving the power crises and increasing global demand in the future such as thermoelectric material (TE). These materials have many advantages to use in power generation, cooling and heating and can generate usable electricity from different waste heat sources working at different temperature ranges. Our focus is on p-type low temperature inorganic Thermoelectric Telluride (TET) material, suitable near the room temperature. This review starts with a fundamental understanding of thermoelectric materials, their synthesis methodologies and advance strategies for enhancing the performance. Low temperature chalcogenide based telluride TE materials play a very essential role and provide foundation along with promises for future applications. Finally, we summaries challenges and future prospective for inorganic TE materials.
Copyright (c) 2026 Shailendra Kumar Gupta, Pragya Agarwal, Manoj Kumar, Sudhir Kumar Sharma, Suresh Kumar Sharma https://creativecommons.org/licenses/by/4.0
Computer Simulation of Temperature Effect on Human Biological Tissue in The Treatment of Obesity
This study developed a physical, mathematical, and computational model of temperature effect on human biological tissue in the treatment of obesity. Temperature distributions in different layers of biological tissue during cooling were determined. The obtained results allow us to predict the depth of biological tissue freezing and the maximum cooling effect during cryomassage and cryodestruction.
Copyright (c) 2026 Р.Р. Кобилянський, В.В. Лисько, Ю.М. Канут, О.І. Іващук, В.Ю. Бодяка, І.О. Малишевський, С.Л. Говорнян https://creativecommons.org/licenses/by/4.0
Research on Heat Exchange in Biomedical Tubes for Thermoelectric Temperature Control of Irrigation Fluid Flow
The article investigates the problem of steady-state heat transfer in a thin-walled cylindrical tube, along which a liquid moves under conditions of laminar hydraulically stabilized flow. An analytical solution for the temperature distribution in the liquid and the tube material is obtained using a number of Bessel functions. The conditions of a constant temperature of the tube wall and the absence of internal heat sources are considered. Numerical modeling of the temperature field is carried out, which made it possible to visualize the two-dimensional and three-dimensional temperature distribution. It is shown that the cooling of the liquid occurs mainly due to convective heat exchange with the cooled tube wall. The average temperature of the liquid at the outlet, the total heat flux and the effective heat transfer coefficient are determined. The results obtained have applied value for medical and technical thermoelectric cooling systems, in particular where thin silicone biomedical tubes are used. References 9, Fig. 6.
Copyright (c) 2026 М.М. Іваночко, Н.М. Іванущак, Р.В. Кузь, Д.І. Понич https://creativecommons.org/licenses/by/4.0