scholarly journals MnP films with desired magnetic, magnetocaloric and thermoelectric properties for a perspective magneto‐thermo‐electric cooling device

2021 ◽  
Author(s):  
C.M. Hung ◽  
R.P. Madhogaria ◽  
B. Muchharla ◽  
E.M. Clements ◽  
A.T. Duong ◽  
...  
Keyword(s):  
Thermoelectric Properties ◽  
Cooling Device ◽  
Thermo Electric

6. Laboratory Notes by Professor Tait (c) The Electric Conductivity of Nickel

1878 ◽  
Vol 9 ◽  
pp. 120-123
Author(s):  
C. Michie Smith ◽  
J. Gordon MacGregor
Keyword(s):  
Electric Conductivity ◽  
Thermoelectric Properties ◽  
Pure Nickel ◽  
Nickel Foil ◽  
Thermo Electric

Pure nickel foil, obtained in Paris by Dr Andrews, was cut into spiral about 20 inches long, and it was on this spiral that all the following experiments were made. During the month of November 1875 a large number of experiments were made as to its thermoelectric properties, and these were found to be almost identical with that of the specimen from observations on which the line was laid down on the “thermo-electric diagram.” (Trans. R.S.E., 1872–3.) This line, it will be remembered, is a peculiar one, and is very similar to that of iron, with this difference, that the peculiar changes take place at much lower temperatures in nickel than in iron.

scholarly journals Фазовые равновесия в системе Sm2Te3–GeTe

2019 ◽  
Vol 21 (2) ◽  
pp. 328-333
Author(s):  
Ziyafat Mukhtarova
Keyword(s):  
Spinodal Decomposition ◽  
Thermoelectric Properties ◽  
Electronic Materials ◽  
Decomposition Reaction ◽  
Simultaneous Optimization ◽  
Thermoelectric Performance ◽  
Advanced Materials ◽  
Energy Materials ◽  
Thermo Electric ◽  
P Type

Методами физико-химического анализа – дифференциально-термическим, высокотемпературным дифференциально-термическим, рентгенофазовым, микроструктурным, а также измерением микротвердости изучена система Sm2Te3–GeTe, которая является квазибинарным сечением тройной системы Ge–Sm–Te. При соотношении исходных теллуридов 1:1 (50 мол. %) и температуре 1100 К по перитектической реакции ж+Sm2Te3→ GeSm2Te4 образуется тройное соединение GeSm2Te4. Образцы системы, богатые GeTe, представляют собой компактные слитки блестяще-серого цвета, а сплавы, бо-гатые Sm2Te3 – спек черного цвета. Ликвидус системы Sm2Te3–GeTe состоит из трех ветвей: Sm2Te3, GeSm2Te4 и a-твердых растворов на основе GeTe. Рентгенофазовый анализ закристаллизованных образцов показал, что набор рентгеновских отражений соответствует фазам Sm2Te3, GeSm2Te4 и a-твердых растворов на основе GeTe. Установлено образование инконгруэнтно плавящегося соединения состава GeSm2Te4, которое может использоваться как термоэлектрический материал. На основе GeTe образуется узкая область твердого раствора   REFERENCES Kohri H., Shiota , Kato M., Ohsugi J., Goto T. Synthesis and Thermolelectric Properties of Bi2Te3–GeTe Pseudo Binary System. Advances in Science and Technology, 2006, v. 46, pp. 168-173. https://doi.org/10.4028/www.scientifi c.net/ST.46.168 Gelbstein Y., Dado B., Ben-Yehuda O., Sadia Y., Dashevsky Z. and Dariel M. P. Highly effi cient Ge-Rich GexPb1-x Te thermoelectric alloys. Journal of Electronic Materials, 2010, v. 39(9), pp. 2049–2052. https://doi.org/10.1007/s11664-009-1012-z Gelbstein Y., Davidow J., Girard S.N., Chung D. Y. and Kanatzidis M. Controlling Metallurgical Phase Separation Reactions of the Ge0.87 Pb0.13Te Alloy for High Thermoelectric Performance. Advanced Energy Materials, 2013, v. 3, pp. 815–820. https://doi.org/10.1002/aenm.201200970 Gelbstein Y., Dashevsky Z. and Dariel M. P. Highly efficient bismuth telluride doped p-type Pb0.13Ge0.87Te for thermoelectric applications. Physical Status Solidi, 2007, v. 1(6), pp. 232–234. https://doi.org/10.1002/pssr.200701160 Gelbstein Y., Ben-Yehuda O., Dashevsky Z. and Dariel M. P. Phase transitions of p-type (Pb,Sn,Ge)Tebased alloys for thermoelectric applica tions. Journal of Crystal Growth, 2009, v. 311(18), pp. 4289–4292. https://doi.org/10.1007/s11664-008-0652-8 Gelbstein Y., Ben-Yehuda O., Pinhas E., et al. Thermoelectric properties of (Pb,Sn,Ge) Te-based alloys. Journal of Electronic Materials, 2009, v. 38(7), 1478–1482. https://doi.org/10.1007/s11664-008-0652-8 Li J., Chen Z., Zhang X., Sun Y., Yang J., Pei Y. Electronic origin of the high thermo- electric performance of GeTe among the p-type group IV monotellurides. NPG Asia Materials, 2017, v. 9, p. 353. https://doi.org/10.1038/am.2017.8 Sante D. Di., Barone P., Bertacco R., Picozzi S. Electric control of the giant rashba effect in bulk GeTe. Advanced materials, 2013, v. 25(27), pp. 3625–3626. https://doi.org/10.1002/adma.201203199 Li J., Zhang X., Lin S., Chen Z., Pei Y. Realizing the high thermoelectric performance of GeTe by Sbdoping and Se-alloying. Mater., 2017, v. 29(2), pp. 605–611. https://doi.org/10.1021/acs.chemmater.6b04066 Abrikosov N. Kh., Shelimova L. B. Poluprovodnikovye materialy na osnove soedineniy AIV BVI. [Semiconductor materials based on compounds АIV В]. Moscow, Nauka Publ., 1975, 195 p. (in Russ.) Korzhuev M. A. Vliyaniye legirovaniya na parametric of GeTe. Series 6. [Effect of doping on GeTe Series 6]. Moscow, 1983, no. 6 (179), pp. 33–36. (in Russ.) Okoye I. Electronic and optical properties of SnTe and GeTe. Journal of Physics: Condensed Matter, 2002, 14(36), pp. 8625–8637. https://doi.org/10.1088/0953-8984/14/36/318 Gelbstein Y., Rosenberg Y., Sadia Y. and Dariel M. P. Thermoelectric properties evolution of spark plasma sintered (Ge0.6Pb0.3Sn0.1)Te following a spinodal decomposition. Journal of Physical Chemistry, 2010, v. 114(30), pp. 13126–13131. https://doi.org/10.1021/jp103697s Rosenthal T., Schneider N., Stiewe C., Düblinger M., Oeckler O. Real Structure and thermoelectric properties of GeTe-rich germanium antimony tellurides. Mater., 2011, v. 23(19), pp. 4349–4356. https://doi.org/10.1021/cm201717z Li J., Chen Z., Zhang X., Yu H., Wu Z., Xie H., Chen Y., Pei Y. Simultaneous optimization of carrier concentration and alloy scattering for ultrahigh. Mater., 2017, v. 4(12), p. 341. https://doi.org/10.1002/advs.201700341 Bletskan D. I. Phase equilibrium in the system AIV-BVI-part II: systems germanium-chalcogen. Journal of Ovonic Research, 2005, v. 1(5), p. 53–60. Li S. P., Li J. Q., Wang Q. B., Wang L., Liu F. S., Ao W. Q. Synthesis and thermoelectric properties of the (GeTe)1-x(PbTe)x alloys. Solid State Sciences, 2011, v. 13(2), pp. 399–403. https://doi.org/10.1016/j.solidstatesciences. 2010.11.045 Gelbstein Y., Dado B., Ben-Yehuda O., Sadia Y., Dashevsky Z., Dariel M. P. High thermoelectric fi gure of merit and nanostructuring in bulk p-type Gex(SnyPb1–y)1–x Te alloys following a spinodal decomposition reaction. Chemistry of Materials, 2010, v. 22(3), pp. 1054–1058. https://doi.org/10.1021/cm902009t Yarembash E. I., Eliseev A. A. Khal’kogenidy redkozemel’nykh elementov: sintez i kristallokhimiya [Chalcogenides of rare-earth elements: synthesis and crystal chemistry]. Moscow, Nauka Publ., 1975, p. 258. (in Russ.) Mukhtarova Z. M., Bakhtiyarly I. B., Azhdarova D. S. Politermicheskoye secheniye Ge0.80 Te0.20–Sm0.80 Te0.20. khim. zhurn., 2010, no. 4, pp. 144–146. Mukhtarova Z. M., Bakhtiyarly I. B., Azhdarova D. S. Issledovaniye politermicheskogo secheniye Ge0.84Te0.16–Sm5Ge2Te7 v troynoy sisteme Ge–Te–Sm. Aze-rb. khim. zhurn., 2011, no. 4, pp. 57–59.

scholarly journals The Effect of Tension on the Thermoelectric Properties of Metals

1953 ◽  
Vol 6 (4) ◽  
pp. 410 ◽  
Author(s):  
AJ Mortlock
Keyword(s):  
Electric Power ◽  
Thermoelectric Properties ◽  
Tensile Strain ◽  
General Effect ◽  
Thermo Electric ◽  
Temperature Range

Measurements have been made on 11 different metals of the change in thermo-electric power accompanying elastic tensile strain. The measurements were made over the temperature range 20?400 �C on specimens of known purity. There is evidence that the magnitude of the general effect is dependent upon the purity of the specimen. The results obtained with gold differ considerably from those found by another observer.

Structural, Optoelectronic and Thermoelectric Properties of Ternary CaBe2X2 (X = N, P, As, Sb, Bi) Compounds

2018 ◽  
Vol 73 (10) ◽  
pp. 965-973 ◽  
Author(s):  
Abdul Ahad Khan ◽  
Aziz Ur Rehman ◽  
A. Laref ◽  
Masood Yousaf ◽  
G. Murtaza
Keyword(s):  
Band Gap ◽  
Thermoelectric Properties ◽  
Density Functional ◽  
Electronic Band Structure ◽  
Structural Parameters ◽  
Infrared Region ◽  
Ultraviolet Region ◽  
Thermo Electric ◽  
Electronic Band ◽  
Electron Charge Density

AbstractThe structural, electronic, optical and thermoelectric properties of ternary CaBe2X2 (X = N, P, As, Sb and Bi) have been investigated comprehensively for the first time using density functional theory. All the compounds are optimized to obtain their ground states. Computed structural parameters agree to the available experimental results. Electronic band structure calculations reveal the semiconducting nature of the compounds, while bang gap decreases by changing the anion X from N to Bi the band gap decreases. In the valence band, major contribution is due to X-p state, while in conduction band (CB) the major contribution is mainly due to the Ca-d state. Furthermore, electron charge density plots reveal ionic bonding character with small covalent bonding. Optical properties are calculated in detail. Static value of refractive index shows inverse variation with band gap. The refractive indices of these compounds are high in the infrared region and gradually decreased in the visible and ultraviolet region. The thermoelectric properties are studied using Boltzmann statistics through BoltzTraP code. High optical conductivity peaks and figure of merits (ZT) for compounds reveal that they are good candidates for the optoelectronics and thermo-electric devices.

Synthesis and thermoelectric properties of the pseudo-binary skutterudites CoGe1.5Se1.5 and CoSn1.5Te1.5

2008 ◽  
Author(s):  
David Johnson ◽  
Qiyin Lin ◽  
Mary Smeller ◽  
Colby Heideman ◽  
Arwyn L. E. Smalley
Keyword(s):  
Thermoelectric Properties

Thermoelectric Properties of PbSr(Se,Te)-Based Low Dimensional Structures

2000 ◽  
Vol 626 ◽  
Author(s):  
Harald Beyer ◽  
Joachim Nurnus ◽  
Harald Böttner ◽  
Armin Lambrecht ◽  
Lothar Schmitt ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Thermoelectric Properties ◽  
Power Factor ◽  
Evaluation Method ◽  
Interband Transition ◽  
Multiple Quantum Well ◽  
Calculated Data ◽  
Multiple Quantum ◽  
Ir Transmission ◽  
Low Dimensional

ABSTRACTThermoelectric properties of low dimensional structures based on PbTe/PbSrTe-multiple quantum-well (MQW)-structures with regard to the structural dimensions, doping profiles and levels are presented. Interband transition energies and barrier band-gap are determined from IR-transmission spectra and compared with Kronig-Penney calculations. The influence of the data evaluation method to obtain the 2D power factor will be discussed. The thermoelectrical data of our layers show a more modest enhancement in the power factor σS2 compared with former publications and are in good agreement with calculated data from Broido et al. [5]. The maximum allowed doping level for modulation doped MQW structures is determined. Thermal conductivity measurements show that a ZT enhancement can be achieved by reducing the thermal conductivity due to interface scattering. Additionally promising lead chalcogenide based superlattices for an increased 3D figure of merit are presented.

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