alternativeАльтернативная энергетика и экология (ISJAEE)Alternative Energy and Ecology (ISJAEE)1608-8298Международный издательский дом научной периодики "Спейс10.15518/isjaee.2023.05.021-031alternative-2255Research ArticleI. ВОЗОБНОВЛЯЕМАЯ ЭНЕРГЕТИКА. 7. Нетрадиционные источники возобновляемой энергииI. RENEWABLE ENERGY. 7. Unconventional sources of renewed energyПрименение CFD моделирования при поиске энергоэффективной системы вентиляции производственного помещенияSynthesis, structure and thermoelectric properties of holmium-doped nanomaterials based on bismuth tellurideЯпрынцевМ. Н.YapryntsevM. N.

Максим Николаевич Япрынцев - к.ф.-м.н., доцент кафедры материаловедения и нанотехнологий

308015 Белгород ул. Победы 85

Maksim Yapryntsev - Candidate of Physical and Mathematical Sciences, Associate Professor of the Department of Materials Science and Nanotechnology

ul. Pobedy, d. 85, g. Belgorod, 308015

yaprintsev@bsu.edu.ruИвановО. Н.IvanovO. N.

Олег Николаевич Иванов - д.ф.-м.н., профессор кафедры материаловедения и нанотехнологий

308015 Белгород ул. Победы 85

Oleg Ivanov - Doctor of Physical and Mathematical Sciences, Professorof the Department of Materials Science and Nanotechnology

ul. Pobedy, d. 85, g. Belgorod, 308015

Белгородский государственный национальный исследовательский университет, НИУ «БелГУ»РоссияBelgorod National Research UniversityRussian Federation202324102023052131Copyright © Международный издательский дом научной периодики "Спейс, 20232023Международный издательский дом научной периодики "СпейсМеждународный издательский дом научной периодики "Спейсhttps://www.isjaee.com/jour/about/submissions#copyrightNoticehttps://www.isjaee.com/jour/article/view/2255

Порошкообразные термоэлектрические материалы Bi2-xHoxTe2,7Se0,3 (x = 0; 0,001; 0,0025; 0,005) получали методом сольвотермального синтеза. Показана возможность получения наноматериалов на основе теллурида висмута, легированного гольмием. Изучено влияние концентрации гольмия на параметры кристаллической решетки, морфологию и средний размер синтезируемых частиц. Методом искрового плазменного спекания были получены объемные материалы Bi2-xHoxTe2,7Se0,3. Все полученные образцы были текстурированы, кристаллографическая ось текстуры (0 0 l), направлена параллельно направлению приложение давления в процессе компактирования. Развитие текстуры подтверждается сканирующей электронной микроскопией и рентгенофазовым анализом. Зерна в текстурированных образцах образуют упорядоченную пластинчатую структуру, а пластинчатые листы лежат в плоскости, перпендикулярной направлению прессования. Увеличение концентрации гольмия приводит к увеличению степени текстурирования. Были изучены термоэлектрические свойства объемных материалов Bi2-xHoxTe2,7Se0,3.

Powdered thermoelectric materials Bi2-xHoxTe2.7Se0.3 (x = 0; 0.001; 0.0025; 0.005) were obtained by the method of solvothermal synthesis. The possibility of obtaining nanomaterials based on holmium-doped bismuth telluride is shown. The influence of holmium concentration on the parameters of the crystal lattice, morphology and average size of the synthesized particles were studied. Bulk materials Bi2-xHoxTe2.7Se0.3 were obtained by spark plasma sintering. All obtained samples were textured, the crystallographic axis of the texture (0 0 l) is directed parallel to the direction of pressure application during compaction. The development of the texture is confirmed by scanning electron microscopy and XRD analysis. The grains in the textured samples form an ordered lamellar structure, and the lamellar sheets lie in a plane perpendicular to the direction of pressing. An increase in the concentration of holmium leads to an increase in the degree of texturing. The thermoelectric properties of bulk materials Bi2-xHoxTe2.7Se0.3.

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The authors declare that there are no conflicts of interest present.