Mechanical and transport properties of pseudo-binary alloys (PbTe)1−x–(SnTe)x by pressureless sintering

Cui, Jiangpeng; Qian, Xin; Zhao, Xinbing

doi:10.1016/s0925-8388(03)00049-5

Cited by 47 publications

(32 citation statements)

References 10 publications

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“…The MnTe crystallizes in the hexagonal structure of the NiAs type ( [13] and references therein), the metastable, zinc blende phase of this compound only can also be obtained by MBE (see, e.g., [14]). The observed qualitative composition dependence of the microhardness in (Sn,Mn)Te thin layers is similar to that observed in (Pb,Sn)Te bulk crystal [15] but differs significantly from that recently observed for several PbTe-based solid solutions containing Cd [16,17], Ge [18], or Ca [19]. For example using the same experimental setup the determined Young modulus was also a constant value in (Pb,Cd)Te solid solution but the microhardness increased by almost 50% in a similar composition range [17].…”

Section: Resultssupporting

confidence: 80%

Microhardness and the Young Modulus of Thin, MBE-Grown, (Sn,Mn)Te Layers Containing up to 8% of Mn

et al. 2017

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The thin layers of (Sn,Mn)Te solid solution were grown by molecular beam epitaxy onto (111)-oriented BaF2 substrates and characterized by scanning electron microscopy, atomic force microscopy, energy dispersive X-ray spectrometry, and X-ray diffraction methods. The epitaxial character of the growth was confirmed. All the layers exhibited a regular (fcc) structure of the rock-salt type and were (111)-oriented, their thickness was close to about 1 µm. The layers contained up to 8% of Mn. The microhardness and the Young modulus values were determined by the nanoindentation measurements. The Berkovich type of the intender was applied, the maximum applied load was equal to 1 mN. The results of measurements demonstrated a lack of the composition dependence of the Young modulus value. A slight increase of the microhardness value with an increasing Mn content in the (Sn,Mn)Te solid solution was observed.

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Section: Resultssupporting

confidence: 80%

Microhardness and the Young Modulus of Thin, MBE-Grown, (Sn,Mn)Te Layers Containing up to 8% of Mn

et al. 2017

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“…1,2 All three of the transport coefficients that appear in the expression for ZT vary with alloy composition and are sensitive to the process by which the alloy is fabricated. [3][4][5][6][7] This has resulted in a large variation in the reported ZT values for (AgSbTe 2 ) y (Pb x Sn 1Àx Te) 1Ày materials in the literature.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of p-Type Pb0.5Sn0.5Te Thermoelectric Power Generation Elements by Mechanical Alloying

LaLonde

Moran

2009

Journal of Elec Materi

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A mechanical alloying (MA) process to transform elemental powders into solid Pb 0.5 Sn 0.5 Te with thermoelectric functionality comparable to melt-alloyed material is described. The room-temperature doping level and mobility as well as temperature-dependent electrical conductivity, Seebeck coefficient, and thermal conductivity are reported. Estimated values of lattice thermal conductivity (0.7 W m À1 K À1 ) are lower than some reports of functional meltalloyed PbSnTe-based material, providing evidence that MA can engender the combination of properties resulting in highly functional thermoelectric material. Though doping level and Sn composition have not been optimized, this material exhibits a ZT value >0.5 at 550 K.

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“…Small Sn and Terich regions were also noted in the matrix of sintered (PbTe) 0.6 -(SnTe) 0.4 [8]. One explanation is that SnTe is more chemically active than PbTe as it oxidizes more rapidly than PbTe when exposed to air [8]. In sample S 1 with 0.2 at.% Pd, the presence of Pd cannot be confirmed with certainty in all regions as its amount is so small that it is in the instrument limits, though EDS analysis detected some small points (black areas with dimensions of 1-2 μm, Table 1) in the Te and Sn-rich regions (dark-gray and black, Table 1) along grain boundaries where the Pd concentration is higher.…”

Section: Resultsmentioning

confidence: 92%

“…Segregation of Sn in Sn-rich veins along grain or powder particle boundaries was noted in sintered Pb 0.5 Sn 0.5 Te [7]. Small Sn and Terich regions were also noted in the matrix of sintered (PbTe) 0.6 -(SnTe) 0.4 [8]. One explanation is that SnTe is more chemically active than PbTe as it oxidizes more rapidly than PbTe when exposed to air [8].…”

Section: Resultsmentioning

confidence: 98%

Far infrared properties of sintered Pb0.9Sn0.1Te doped with palladium

Nikolić

Paraskevopoulos

Nikolić³

et al. 2009

Powder Metall Met Ceram

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UDC 621.762 Far infrared reflectivity spectra of sintered Pb 0.9 Sn 0.1 Te doped with 0.2 and 2 at.% Pd are measured. The experimental results are analyzed using a fitting procedure based on a modified plasmon-phonon interaction model. The values of calculated parameters are compared with literature data for PbTe and PbSnTe single crystal samples doped with palladium and nickel, with the purpose of determining whether the sintered samples can be used in different devices instead of single crystals.

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Mechanical and transport properties of pseudo-binary alloys (PbTe)1−x–(SnTe)x by pressureless sintering

Cited by 47 publications

References 10 publications

Microhardness and the Young Modulus of Thin, MBE-Grown, (Sn,Mn)Te Layers Containing up to 8% of Mn

Microhardness and the Young Modulus of Thin, MBE-Grown, (Sn,Mn)Te Layers Containing up to 8% of Mn

Synthesis and Characterization of p-Type Pb0.5Sn0.5Te Thermoelectric Power Generation Elements by Mechanical Alloying

Far infrared properties of sintered Pb0.9Sn0.1Te doped with palladium

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