{"title":"Synthesis, Structure, and Thermoelectric Properties of Holmium-Doped Nanomaterials Based on Bismuth Telluride","authors":"","doi":"10.1134/s2635167623600980","DOIUrl":null,"url":null,"abstract":"<span> <h3>Abstract</h3> <p>Powdered thermoelectric materials Bi<sub>2–<em>x</em></sub>Ho<sub><em>x</em></sub>Te<sub>2.7</sub>Se<sub>0.3</sub> (<em>x</em> = 0, 0.001, 0.0025, 0.005, 0.01, and 0.02) are obtained by the method of solvothermal synthesis. The possibility of obtaining nanomaterials based on holmium-doped bismuth telluride is shown<sub>.</sub> The influence of the concentration of holmium on the parameters of the crystal lattice, morphology and average size of the synthesized particles are studied. Bulk materials Bi<sub>2–<em>x</em></sub>Ho<sub><em>x</em></sub>Te<sub>2.7</sub>Se<sub>0.3</sub> are obtained by spark plasma sintering. All obtained samples are textured, the crystallographic axis of the texture (0 0 <em>l</em>) is directed parallel to the direction of the application of pressure during compaction. Development of the texture is confirmed by scanning electron microscopy and X-ray diffraction (XRD) analysis. The grains in the textured samples form an ordered lamellar structure, and the lamellar sheets lie in the 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 the bulk materials Bi<sub>2–<em>x</em></sub>Ho<sub><em>x</em></sub>Te<sub>2.7</sub>Se<sub>0.3</sub> are also obtained</p> </span>","PeriodicalId":716,"journal":{"name":"Nanotechnologies in Russia","volume":null,"pages":null},"PeriodicalIF":0.8000,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nanotechnologies in Russia","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1134/s2635167623600980","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"Engineering","Score":null,"Total":0}
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Abstract
Powdered thermoelectric materials Bi2–xHoxTe2.7Se0.3 (x = 0, 0.001, 0.0025, 0.005, 0.01, and 0.02) are obtained by the method of solvothermal synthesis. The possibility of obtaining nanomaterials based on holmium-doped bismuth telluride is shown. The influence of the concentration of holmium on the parameters of the crystal lattice, morphology and average size of the synthesized particles are studied. Bulk materials Bi2–xHoxTe2.7Se0.3 are obtained by spark plasma sintering. All obtained samples are textured, the crystallographic axis of the texture (0 0 l) is directed parallel to the direction of the application of pressure during compaction. Development of the texture is confirmed by scanning electron microscopy and X-ray diffraction (XRD) analysis. The grains in the textured samples form an ordered lamellar structure, and the lamellar sheets lie in the 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 the bulk materials Bi2–xHoxTe2.7Se0.3 are also obtained
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Nanobiotechnology Reports publishes interdisciplinary research articles on fundamental aspects of the structure and properties of nanoscale objects and nanomaterials, polymeric and bioorganic molecules, and supramolecular and biohybrid complexes, as well as articles that discuss technologies for their preparation and processing, and practical implementation of products, devices, and nature-like systems based on them. The journal publishes original articles and reviews that meet the highest scientific quality standards in the following areas of science and technology studies: self-organizing structures and nanoassemblies; nanostructures, including nanotubes; functional and structural nanomaterials; polymeric, bioorganic, and hybrid nanomaterials; devices and products based on nanomaterials and nanotechnology; nanobiology and genetics, and omics technologies; nanobiomedicine and nanopharmaceutics; nanoelectronics and neuromorphic computing systems; neurocognitive systems and technologies; nanophotonics; natural science methods in a study of cultural heritage items; metrology, standardization, and monitoring in nanotechnology.
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