mateltechИзвестия высших учебных заведений. Материалы электронной техникиIzvestiya Vysshikh Uchebnykh Zavedenii. Materialy Elektronnoi Tekhniki = Materials of Electronics Engineering1609-35772413-6387MISIS10.17073/1609-3577-2023-2-122-136ESSMQXmateltech-518Research ArticleФизические свойства и методы исследованияPHYSICAL CHARACTERISTICS AND THEIR STUDYТепловые и термоэлектрические свойства керамики из оксида цинка, легированной металламиThermal and thermoelectric properties of zinc oxide ceramics alloyed with metalshttps://orcid.org/0000-0002-7787-4449ПашкевичА. В.PashkevichA. V.

ул. Бобруйская, д. 11, Минск, 220006;

просп. Независимости, д. 4, Минск, 220030

Пашкевич Алексей Владимирович — магистр физики, младший научный сотрудник лаборатории физики перспективных материалов (1), аспирант кафедры физики твердого тела (2)

11 Bobruiskaya Str., Minsk, 220006;

4 Niezaliežnasci Ave., Minsk 220030

Aliaksei V. Pashkevich — Master of Physics, Junior Researcher, Laboratory of Advanced Materials Physics (1), Postgraduate Student of the Department of Solid State Physics (2)

alexei.paschckevich@yandex.byhttps://orcid.org/0000-0002-7008-847XФедотовА. К.FedotovA. K.

ул. Бобруйская, д. 11, Минск, 220006

Федотов Александр Кириллович — доктор физ.-мат. наук, профессор, главный научный сотрудник лаборатории физики перспективных материалов

11 Bobruiskaya Str., Minsk, 220006

Alexander K. Fedotov — Dr. Sci. (Phys.-Math.), Professor, Chief Researcher, Laboratory of Advanced Materials Physics

akf1942@gmail.comПодденежныйЕ. Н.PoddenezhnyE. N.

просп. Октября, д. 48, Гомель, 246029

Подденежный Евгений Николаевич — доктор хим. наук, профессор, главный научный сотрудник лаборатории керамических материалов

48 Oktyabrya Ave., Gomel 246746

Eugen N. Poddenezhny — Dr. Sci. (Chem.), Professor, Chief Researcher, Laboratory of Ceramic Materials

podd-evgen@yandex.ruhttps://orcid.org/0000-0002-2695-9477БлизнюкЛ. А.BliznyukL. A.

ул. П. Бровки, д. 19, Минск, 220072

Близнюк Людмила Александровна — зав. лабораторией электронной керамики

19 P. Brovka Str., Minsk 220072

Ludmila A. Bliznyuk — Laboratory Manager, Electronic Ceramics Laboratory

luyda@physics.byhttps://orcid.org/0000-0001-7815-100XХовайлоВ. В.KhovayloV. V.

Ленинский просп., д. 4, стр. 1, Москва, 119049

Ховайло Владимир Васильевич — доктор физ.-мат. наук, профессор, кафедра функциональных наносистем и высокотемпературных материалов

4-1 Leninsky Ave., Moscow 119049

Vladimir V. Khovaylo — Dr. Sci. (Phys.-Math.), Professor, Department of Functional Nanosystems and High-Temperature Materials

khovaylo@misis.ruhttps://orcid.org/0000-0002-5993-3839ФедотоваВ. В.FedotovaV. V.

ул. П. Бровки, д. 19, Минск, 220072

Федотова Вера Васильевна — канд. физ.-мат. наук, старший научный сотрудник, лаборатория неметаллических ферромагнетиков

19 P. Brovka Str., Minsk 220072

Vera V. Fedotova — Cand. Sci. (Phys.-Math.), Senior Researcher, Laboratory of Nonmetallic Ferromagnets

fedotova@physics.byhttps://orcid.org/0000-0002-7274-1380ХарченкоА. А.KharchankoA. A.

ул. Бобруйская, д. 11, Минск, 220006

Харченко Андрей Андреевич — канд. физ.-мат. наук, доцент, старший научный сотрудник лаборатории физики перспективных материалов

11 Bobruiskaya Str., Minsk, 220006

Andrei A. Kharchanko — Cand. Sci. (Phys.-Math.), Associate Professor, Senior Researcher, Laboratory of Advanced Materials Physics

XaaTM@mail.ruИнститут ядерных проблем Белорусского государственного университета; Белорусский государственный университетБеларусьResearch Institute for Nuclear Problems of Belarusian State University; Belarusian State UniversityBelarusИнститут ядерных проблем Белорусского государственного университетаБеларусьResearch Institute for Nuclear Problems of Belarusian State UniversityBelarusГомельский государственный технический университет имени П.О. СухогоБеларусьSukhoi State Technical University of GomelBelarusНаучно-практический центр Национальной академии наук Беларуси по материаловедениюБеларусьScientific-Practical Materials Research Centre of the National Academy of Sciences of BelarusBelarusНациональный исследовательский технологический университет «МИСИС»РоссияNational University of Science and Technology “MISIS”Russian Federation202307072023262122136Copyright © Пашкевич А.В., Федотов А.К., Подденежный Е.Н., Близнюк Л.А., Ховайло В.В., Федотова В.В., Харченко А.А., 20232023Пашкевич А.В., Федотов А.К., Подденежный Е.Н., Близнюк Л.А., Ховайло В.В., Федотова В.В., Харченко А.А.Pashkevich A.V., Fedotov A.K., Poddenezhny E.N., Bliznyuk L.A., Khovaylo V.V., Fedotova V.V., Kharchanko A.A.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://met.misis.ru/jour/article/view/518

В работе изучаются тепловые, электрические и термоэлектрические свойства керамик ZnO-MexOy с 1 ≤ x, y ≤ 3, где Me = Al, Co, Fe, Ni, Ti. Образцы изготавливались на основе керамической технологии спекания порошковых смесей двух или более оксидов в открытой атмосфере с вариациями температуры и продолжительности отжига. Структурно-фазовые исследования керамик указывают на то, что добавление порошков легирующих агентов MexOy в порошок ZnO со структурой вюрцита после процесса синтеза приводит к выделению вторичных фаз типа шпинелей Znx(Mе)yO4 и росту пористости полученных керамик в 4 раза. Исследования теплопроводности при комнатной температуре указывают на преобладание решеточного вклада. Уменьшение теплопроводности при легировании обусловлено увеличением рассеяния фононов вследствие воздействия следующих факторов: (1) размерный фактор при замещении ионов цинка в кристаллической решетке ZnO (вюрцит) ионами металлов из добавляемых оксидов MexOy; (2) образование дефектов - точечных, границ зерен (измельчение микроструктуры); (3) рост пористости (снижения плотности); и (4) формирование частиц дополнительных фазы (типа шпинелей Znx(Mе)yO4). Действие перечисленных факторов при замещение ионов цинка металлами (Co, Al, Ti, Ni, Fe) приводит к увеличению термоэлектрической добротности ZT на 4 порядка (за счет уменьшения удельного электросопротивления и теплопроводности при относительно небольшом снижении коэффициента термоЭДС). Причиной снижения электросопротивления является, образующееся при увеличении продолжительности отжига, более равномерное перераспределение ионов легирующих металлов в решетке вюрцита, приводящее к росту числа донорных центров.

The paper studies the thermal, electrical and thermoelectric properties of ZnO–MexOy ceramics with 1 ≤ x, y ≤ 3, where Me = Al, Co, Fe, Ni, Ti. The samples were made on the basis of ceramic sintering technology of powder mixtures of two or more oxides in an open atmosphere with variations in temperature and duration of annealing. Structural and phase studies of ceramics indicate that the addition of powders of MexOy alloying agents to ZnO powder with a wurtzite structure after the synthesis process leads to the release of secondary phases such as Znx(Me)yO4 spinels and a 4-fold increase in the porosity of the resulting ceramics. Studies of thermal conductivity at room temperature indicate the predominance of the lattice contribution. The decrease in thermal conductivity during doping is due to an increase in phonon scattering due to the influence of the following factors: (1) the size factor when replacing zinc ions in the ZnO (wurtzite) crystal lattice with metal ions from the added MexOy oxides; (2) the formation of defects – point, grain boundaries (microstructure grinding); (3) increase in porosity (decrease in density); and (4) formation of additional phase particles (such as spinels Znx(Mе)yO4). The effect of these factors in the substitution of zinc ions with metals (Co, Al, Ti, Ni, Fe) leads to an increase in the thermoelectric Q-factor of ZT by 4 orders of magnitude (due to a decrease in electrical resistivity and thermal conductivity with a relatively small decrease in the coefficient of thermal EMF). The reason for the decrease in electrical resistance is the more uniform redistribution of alloying metal ions in the wurtzite lattice, resulting in an increase in the number of donor centers, formed with an increase in the duration of annealing.

керамикаоксид цинкаплотностьтеплопроводностьрассеяние фононовтермоэлектрическая добротностьceramicszinc oxidedensitythermal conductivityphonon scatteringthermoelectric figure of meritИсследование выполнено за счет Государственной программы научных исследований «Физматтех, новые материалы и технологии» (Беларусь) по гранту № 1.15.1.This research was funded by the State program of scientific research “PhysMatTech, New Materials and Technologies” (Belarus) under grant number 1.15.1.ReferencesPonja S.D., Sathasivam S., Parkin I.P., Carmalt C.J. Highly conductive and transparent gallium doped zinc oxide thin films via chemical vapor deposition. Scientific Reports. 2020; 10(1): 638. https://doi.org/10.1038/s41598-020-57532-7Ponja S.D., Sathasivam S., Parkin I.P., Carmalt C.J. Highly conductive and transparent gallium doped zinc oxide thin films via chemical vapor deposition. Scientific Reports. 2020; 10(1): 638. https://doi.org/10.1038/s41598-020-57532-7Lee Y.-P., Lin Ch-Ch., Hsiao Ch-Ch., Chou P.-A., Cheng Y.-Y., Hsieh Ch-Ch., Dai Ch-A. Nanopiezoelectric devices for energy generation based on ZnO nanorods / flexible-conjugated copolymer hybrids using all wet-coating processes. Micromachines. 2020; 11(1): 14. https://doi.org/10.3390/mi11010014Lee Y.-P., Lin Ch-Ch., Hsiao Ch-Ch., Chou P.-A., Cheng Y.-Y., Hsieh Ch-Ch., Dai Ch-A. Nanopiezoelectric devices for energy generation based on ZnO nanorods / flexible-conjugated copolymer hybrids using all wet-coating processes. Micromachines. 2020; 11(1): 14. https://doi.org/10.3390/mi11010014Bernik S., Daneu N. Characteristics of SnO2-doped ZnO-based varistor ceramics. Journal of the European Ceramic Society. 2001; 21(10-11): 1879—1882. https://doi.org/10.1016/S0955-2219(01)00135-2Bernik S., Daneu N. Characteristics of SnO2-doped ZnO-based varistor ceramics. Journal of the European Ceramic Society. 2001; 21(10-11): 1879–1882. https://doi.org/10.1016/S0955-2219(01)00135-2Wu X., Lee J., Varshney V., Wohlwend J.L., Roy A.K., Luo T. Thermal conductivity of wurtzite zinc-oxide from first-principles lattice dynamics – a comparative study with gallium nitride. Scientific Reports. 2016; 6(1): 22504. https://doi.org/10.1038/srep22504Wu X., Lee J., Varshney V., Wohlwend J.L., Roy A.K., Luo T. Thermal conductivity of wurtzite zinc-oxide from first-principles lattice dynamics – a comparative study with gallium nitride. Scientific Reports. 2016; 6(1): 22504. https://doi.org/10.1038/srep22504Sawalha A., Abu-Abdeen M., Sedky A. Electrical conductivity study in pure and doped ZnO ceramic system. Physica B: Condensed Matter. 2009; 404(8-11): 1316—1320. https://doi.org/10.1016/j.physb.2008.12.017Sawalha A., Abu-Abdeen M., Sedky A., Electrical conductivity study in pure and doped ZnO ceramic system. Physica B: Condensed Matter. 2009; 404(8-11): 1316–1320. https://doi.org/10.1016/j.physb.2008.12.017Winarski D. Synthesis and characterization of transparent conductive zinc oxide thin films by sol-gel spin coating method. Thesis diss. of master science. Graduate College of Bowling Green State University; 2015.Winarski D. Synthesis and characterization of transparent conductive zinc oxide thin films by sol-gel spin coating method. Thesis diss. of master science. Graduate College of Bowling Green State University; 2015.Chen H., Zheng L., Zeng J., Li G., Effect of Sr doping on nonlinear current–voltage properties of ZnO-based ceramics. Journal of Electronic Materials. 2021; 50(7): 4096—4103. https://doi.org/10.1007/s11664-021-08960-2Chen H., Zheng L., Zeng J., Li G., Effect of Sr doping on nonlinear current-voltage properties of ZnO-based ceramics. Journal of Electronic Materials. 2021; 50(7): 4096–4103. https://doi.org/ 10.1007/s11664-021-08960-2Mohammed M.A., Izman S., Alias M.N., Rajoo S., Uday M.B., Obayes N.H., Omar M.F. A review of thermoelectric ZnO nanostructured ceramics for energy recovery. International Journal of Engineering & Technology. 2018; 7(2.29): 27—30. https://doi.org/10.14419/IJET.V7I2.29.13120Mohammed M.A., Izman S., Alias M.N., Rajoo S., Uday M.B., Obayes N.H., Omar M.F. A review of thermoelectric ZnO nanostructured ceramics for energy recovery. International Journal of Engineering & Technology. 2018; 7(2.29): 27–30. https://doi.org/10.14419/IJET.V7I2.29.13120Colder H., Guilmeau E., Harnois C., Marinel S., Retoux R., Savary E. Preparation of Ni-doped ZnO ceramics for thermoelectric applications. Journal of the European Ceramic Society. 2011; 31(15): 2957—2963. https://doi.org/10.1016/j.jeurceramsoc.2011.07.006Colder H., Guilmeau E., Harnois C., Marinel S., Retoux R., Savary E. Preparation of Ni-doped ZnO ceramics for thermoelectric applications. Journal of the European Ceramic Society. 2011; 31(15): 2957–2963. https://doi.org/10.1016/j.jeurceramsoc.2011.07.006Jeong A., Suekuni K., Ohtakia M., Jang B.-K. Thermoelectric properties of In- and Ga-doped spark plasma sintered ZnO ceramics. Ceramics International. 2021; 47(17): 23927—23934. https://doi.org/10.1016/j.ceramint.2021.05.101Jeong A., Suekuni K., Ohtakia M., Jang B.-K. Thermoelectric properties of In- and Ga-doped spark plasma sintered ZnO ceramics. Ceramics International. 2021; 47(17): 23927–23934. https://doi.org/10.1016/j.ceramint.2021.05.101Levinson L.M., Hirano S. Ceramic transactions. In: Procced. materials of Inter. symposium. Vol. 41. Grain boundaries and interfacial phenomena in electronic ceramics. Westerville: American Ceramic Society; 1994.Levinson L.M., Hirano S. Ceramic transactions. In: Procced. of Inter. symposium. Vol. 41. Grain boundaries and interfacial phenomena in electronic ceramics. Westerville: American Ceramic Society; 1994.Li J., Yang S., Pu Y., Zhu D. Effects of pre-calcination and sintering temperature on the microstructure and electrical properties of ZnO-based varistor ceramics. Materials Science in Semiconductor Processing. 2021; 123(6): 105529. https://doi.org/10.1016/j.mssp. 2020.105529Li J., Yang S., Pu Y., Zhu D. Effects of pre-calcination and sintering temperature on the microstructure and electrical properties of ZnO-based varistor ceramics. Materials Science in Semiconductor Processing. 2021; 123(6): 105529. https://doi.org/10.1016/j.mssp. 2020.105529Liang X. Thermoelectric transport properties of naturally nanostructured Ga–ZnO ceramics: Effect of point defect and interfaces. Journal of the European Ceramic Society. 2016; 36(7): 1643—1650. https://doi.org/10.1016/j.jeurceramsoc.2016.02.017Liang X. Thermoelectric transport properties of naturally nanostructured Ga–ZnO ceramics: Effect of point defect and interfaces. Journal of the European Ceramic Society. 2016; 36(7): 1643–1650. https://doi.org/10.1016/j.jeurceramsoc.2016.02.017Liang X. Thermoelectric transport properties of Fe-enriched ZnO with high-temperature nanostructure refinement. ACS Applied Materials & Interfaces. 2015; 7(15): 7927—7937. https://doi.org/10.1021/am509050aLiang X. Thermoelectric transport properties of Fe-enriched ZnO with high- temperature nanostructure refinement. ACS Applied Materials & Interfaces. 2015; 7(15): 7927–7937. https://doi.org/10.1021/am509050aWalia S., Balendhran S., Nili H., Zhuiykov S., Rosengarten G., Wang Q.H., Bhaskaran M., Sriram S., Strano M.S., Kalantar-zadeh K. Transition metal oxides – thermoelectric properties. Progress in Materials Science. 2013; 58(8): 1443—1489. https://doi.org/10.1016/j.pmatsci.2013.06.003Walia S., Balendhran S., Nili H., Zhuiykov S., Rosengarten G., Wang Q.H., Bhaskaran M., Sriram S., Strano M.S., Kalantar-zadeh K. Transition metal oxides – thermoelectric properties. Progress in Materials Science. 2013; 58(8): 1443–1489. https://doi.org/10.1016/j.pmatsci.2013.06.003Li P., Zhang H., Gao C., Jiang G., Li Z. Electrical property of Al/La/Cu modified ZnO-based negative temperature coefficient (NTC) ceramics with high ageing stability. Journal of Materials Science: Materials in Electronics. 2019; 30(21): 19598—19608. https://doi.org/10.1007/s10854-019-02333-6Li P., Zhang H., Gao C., Jiang G., Li Z. Electrical property of Al/La/Cu modified ZnO-based negative temperature coefficient (NTC) ceramics with high ageing stability. Journal of Materials Science: Materials in Electronics. 2019; 30(21): 19598–19608. https://doi.org/10.1007/s10854-019-02333-6Pullar R.C., Piccirilloa C., Novais R.M., Quarta A., Bettini S., Iafisco M. A sustainable multi-function biomorphic material for pollution remediation or UV absorption: aerosol assisted preparation of highly porous ZnO-based materials from cork templates. Journal of Environmental Chemical Engineering. 2019; 7(2): 102936. https://doi.org/10.1016/j.jece.2019.102936Pullar R.C., Piccirilloa C., Novais R.M., Quarta A., Bettini S., Iafisco M. A sustainable multi-function biomorphic material for pollution remediation or UV absorption: aerosol assisted preparation of highly porous ZnO-based materials from cork templates. Journal of Environmental Chemical Engineering. 2019; 7(2): 102936. https://doi.org/10.1016/j.jece.2019.102936Sun Q., Li G., Tian T., Zeng J., Zhao K., Zheng L., Barre M., Dittmer J., Gouttenoire F., Rousseau A., Kassiba A.H. Co-doping effects of (Al, Ti, Mg) on the microstructure and electrical behavior of ZnO-based ceramics. Journal of the American Ceramic Society. 2020; 103(5): 3194—3204. https://doi.org/10.1111/jace.16999Sun Q., Li G., Tian T., Zeng J., Zhao K., Zheng L., Barre M., Dittmer J., Gouttenoire F., Rousseau A., Kassiba A.H. Co-doping effects of (Al, Ti, Mg) on the microstructure and electrical behavior of ZnO-based ceramics. Journal of the American Ceramic Society. 2020; 103(5): 3194–3204. https://doi.org/10.1111/jace.16999Vu D.V., Le D.H., Nguyen C.X., Trinh T.Q. Comparison of structural and electric properties of ZnO-based n-type thin films with different dopants for thermoelectric applications. Journal of Sol-Gel Science and Technology. 2019; 91(1): 146—153. https://doi.org/10.1007/s10971-019-05024-0Vu D.V., Le D.H., Nguyen C.X., Trinh T.Q. Comparison of structural and electric properties of ZnO-based n-type thin films with different dopants for thermoelectric applications. Journal of Sol-Gel Science and Technology. 2019; 91(1): 146–153. https://doi.org/10.1007/s10971-019-05024-0Pashkevich A.V., Fedotov A.K., Poddenezhny E.N., Bliznyuk L.A., Fedotova J.A., Basov N.A., Kharchanka A.A., Zukowski P., Koltunowicz T.N., Korolik O.V., Fedotova V.V. Structure, electric and thermoelectric properties of binary ZnO-based ceramics doped with Fe and Co. Journal of Alloys and Compounds. 2022; 895: 162621. https://doi.org/10.1016/j.jallcom.2021.162621Pashkevich A.V., Fedotov A.K., Poddenezhny E.N., Bliznyuk L.A., Fedotova J.A., Basov N.A., Kharchanka A.A., Zukowski P., Koltunowicz T.N., Korolik O.V., Fedotova V.V. Structure, electric and thermoelectric properties of binary ZnO-based ceramics doped with Fe and Co. Journal of Alloys and Compounds. 2022; 895: 162621. https://doi.org/10.1016/j.jallcom.2021.162621Пашкевич А.В., Близнюк Л.А., Федотов А.К., Ховайло В.В., Харченко А.А., Федотова В.В. Тепловые и термоэлектрические свойства керамики на основе оксида цинка, легированной железом. Журнал Белорусского государственного университета. Физика. 2022; (3): 56—67. https://doi.org/10.33581/2520-2243-2022-3-56-67Pashkevich A.V., Bliznyuk L.A., Fedotov A.K., Khovaylo V.V., Fedotova V.V., Kharchanka A.A. Thermal and thermoelectric properties of ceramics based on zinc oxide alloyed with iron. Zhurnal Belorusskogo gosudarstvennogo universiteta. Fizika. 2022; (3): 56–67. (In Russ.). https://doi.org/10.33581/2520-2243-2022-3-56-67Wu Z.-H., Xie H.-Q., Zhai Y.-B. Preparation and thermoelectric properties of Co-doped ZnO synthesized by sol-gel. Journal of Nanoscience and Nanotechnology. 2015; 15(4): 3147—3150. https://doi.org/10.1166/jnn.2015.9658Wu Z.-H., Xie H.-Q., Zhai Y.-B. Preparation and thermoelectric properties of Co-doped ZnO synthesized by sol-gel. Journal of Nanoscience and Nanotechnology. 2015; 15(4): 3147–3150. https://doi.org/10.1166/jnn.2015.9658Sawalha A., Abu-Abdeen M., Sedky A. Electrical conductivity study in pure and doped ZnO ceramic system. Physica B Condensed Matter. 2009; 404(8-11): 1316—1320. https://doi.org/10.1016/j.physb.2008.12.017Sawalha A., Abu-Abdeen M., Sedky A. Electrical conductivity study in pure and doped ZnO ceramic system. Physica B Condensed Matter. 2009; 404(8-11): 1316–1320. https://doi.org/10.1016/j.physb.2008.12.017Gorokhova E.I., Anan’eva G.V., Eron’ko S.B., Oreshchenko E.A., Rodnyi P.A., Chernenko K.A., Khodyuk I.V., Lokshin E.P., Kunshina G.B., Gromov O.G., Lott K.P. Structural, optical, and scintillation characteristics of ZnO ceramics. Journal of Optical Technology. 2011; 78(11): 733—760. https://doi.org/10.1364/jot.78.000753Gorokhova E.I., Anan’eva G.V., Eron’ko S.B., Oreshchenko E.A., Rodnyi P.A., Chernenko K.A., Khodyuk I.V., Lokshin E.P., Kunshina G.B., Gromov O.G., Lott K.P. Structural, optical, and scintillation characteristics of ZnO ceramics. Journal of Optical Technology.2011; 78(11): 733–760. https://doi.org/10.1364/jot.78.000753Кржижановская М.Г., Фирсова В.А., Бубнова Р.С. Применение метода Ритвельда для решения задач порошковой дифрактометрии. СПб.: Санкт-Петербургский университет; 2016. 67 с.Krzhizhanovskaya M.G., Firsova V.A., Bubnova R.S. Application of the Rietveld method for solving problems of powder diffractometry. St. Petersburg: Sankt-Peterburgskii universitet; 2016. 67 p. (In Russ.)Зеер Г.М., Фоменко О.Ю., Ледяева О.Н. Применение сканирующей электронной микроскопии в решении актуальных проблем материаловедения. Журнал Сибирского федерального университета. Серия: Химия. 2009; 4(2): 287—293.Zeer G.M., Fomenko O.Yu., Ledyaeva O.N. Application of scanning electron microscopy in material science. Zhurnal Sibirskogo federal'nogo universiteta. Seriya: Khimiya = Journal of Siberian Federal University. Chemistry. 2009; 4(2): 287–293. (In Russ.)Bosi F., Biagioni C., Pasero M. Nomenclature and classification of the spinel supergroup. European Journal of Mineralogy. 2019; 31(1): 183—192. https://doi.org/10.1127/ejm/2019/0031-2788Bosi F., Biagioni C., Pasero M. Nomenclature and classification of the spinel supergroup. European Journal of Mineralogy. 2019; 31(1): 183–192. https://doi.org/10.1127/ejm/2019/0031-2788Cheng H., Xu X.J., Hng H.H., Ma J. Characterization of Al-doped ZnO thermoelectric materials prepared by RF plasma powder processing and hot press sintering. Ceramics International. 2009; 35(8): 3067—3072. https://doi.org/10.1016/j.ceramint.2009.04.010Cheng H., Xu X.J., Hng H.H., Ma J. Characterization of Al-doped ZnO thermoelectric materials prepared by RF plasma powder processing and hot press sintering. Ceramics International. 2009; 35(8): 3067–3072. https://doi.org/10.1016/j.ceramint.2009.04.010Chernyshova E., Serhiienko I., Kolesnikov E., Voronin A., Zheleznyy M., Fedotov A., Khovaylo V. Influence of NiO nanoparticles on the thermoelectric propertiesof (ZnO)1-x(NiO)x composites. Nanobiotechnology Reports. 2021; 16(3): 381—386. https://doi.org/10.1134/S2635167621030034Chernyshova E., Serhiienko I., Kolesnikov E., Voronin A., Zheleznyy M., Fedotov A., Khovaylo V. Influence of NiO nanoparticles on the thermoelectric propertiesof (ZnO)1-x(NiO)x composites. Nanobiotechnology Reports. 2021; 16(3): 381–386. https://doi.org/10.1134/S2635167621030034Adun H., Kavaz D., Wole-Osho I., Dagbasi M. Synthesis of Fe3O4–Al2O3–ZnO / water ternary hybrid nanofluid: Investigating the effects of temperature, volume concentration and mixture ratio on specific heat capacity, and development of hybrid machine learning for prediction. Journal of Energy Storage. 2021; 41(13-14): 102947. https://doi.org/10.1016/j.est.2021.102947Adun H., Kavaz D., Wole-Osho I., Dagbasi M. Synthesis of Fe3O4–Al2O3–ZnO / water ternary hybrid nanofluid: Investigating the effects of temperature, volume concentration and mixture ratio on specific heat capacity, and development of hybrid machine learning for prediction. Journal of Energy Storage. 2021; 41(13-14): 102947. https://doi.org/10.1016/j.est.2021.102947Barin I. Thermochemical data of pure substances. Weinheim, Federal Republic of Germany; N.Y., USA: VCH; 1995. 2003 p.Barin I. Thermochemical data of pure substances. Weinheim, Federal Republic of Germany; N.Y., USA: VCH; 1995. 2003 p.Kim H.-S., Gibbs Z.M., Tang Y., Wang H., Snyder G.J. Characterization of Lorenz number with Seebeck coefficient measurement. APL Materials. 2015; 3(4): 041506. https://doi.org/10.1063/1.4908244Kim H.-S., Gibbs Z.M., Tang Y., Wang H., Snyder G.J. Characterization of Lorenz number with Seebeck coefficient measurement. APL Materials. 2015; 3(4): 041506. https://doi.org/10.1063/1.4908244Gadzhiev G.G. The thermal and elastic properties of zinc oxide-based ceramics at high temperatures. High Temperature. 2003; 41(6): 778—782. https://doi.org/10.1023/b:hite.0000008333.59304.58Gadzhiev G.G. The thermal and elastic properties of zinc oxide-based ceramics at high temperatures. High Temperature. 2003; 41(6): 778–782. https://doi.org/10.1023/b:hite.0000008333.59304.58

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