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Charge Transport and Thermoelectric Properties of (La1−zPrz)0.8Fe4−xCoxSb12 Skutterudites
Ye-Eun Cha, Il-Ho Kim
Korean J. Met. Mater. 2018;56(10):772-778.   Published online 2018 Oct 5
DOI: https://doi.org/10.3365/KJMM.2018.56.10.772

Partially La/Pr-double-filled and Co-substituted (La1−zPrz)0.8Fe4−xCoxSb12 skutterudites were synthesized by encapsulated melting and vacuum hot pressing. (La,Pr)Sb2 phases were not formed because the partial filling did not exceed the filling fraction limit, and the amount of secondary phase FeSb2 also decreased as the Co content increased. Electrical conductivity decreased with increasing..... More

Thermoelectric Properties of Ge-doped Higher Manganese Silicides MnSi1.72-1.73:Gem
Sol-Bin Park, In-Jae Lee, Il-Ho Kim
Korean J. Met. Mater. 2018;56(9):693-698.   Published online 2018 Sep 5
DOI: https://doi.org/10.3365/KJMM.2018.56.9.693

Ge-doped higher manganese silicides (HMSs) MnSi1.72–1.73:Gem (m = 0.01-0.04) were prepared and their thermoelectric properties were studied. HMS powders were synthesized by solid-state reaction of raw material powders (Mn, Si, and Ge) at 1273 K for 6 h in vacuum, and hot-pressed at 1173 K for 2 h under 70..... More

Charge Transport and Thermoelectric Properties of N-type Bi2-xSbxTe3-ySey:Im Prepared by Encapsulated Melting and Hot Pressing
Woo-Jin Jung, Hyeok-Jin Kim, Il-Ho Kim
Korean J. Met. Mater. 2018;56(7):544-550.   Published online 2018 Jul 5
DOI: https://doi.org/10.3365/KJMM.2018.56.7.544

Iodine-doped n-type Bi2-xSbxTe3-ySey:Im (x = 0.1–0.2, y = 0.15–0.6, and m = 0.0025–0.005) quaternary solid solutions were prepared by encapsulated melting (EM) and hot pressing (HP). The lattice constants of the resulting materials decreased with increasing Sb and Se contents, whereas the amount of I dopant was too small to..... More

Thermoelectric Properties of Partially Double-filled (Ce1-zNdz)yFe4-xCoxSb12 Skutterudites
Ye-Eun Cha, Il-Ho Kim
Korean J. Met. Mater. 2018;56(6):465-471.   Published online 2018 Jun 4
DOI: https://doi.org/10.3365/KJMM.2018.56.6.465

(Ce1-zNdz)yFe4-xCoxSb12 skutterudites were prepared by encapsulated melting, annealing, and hot pressing. The formation of a marcasite phase (FeSb2) was significantly suppressed by partially filling the voids with Ce/Nd and making a Co substitution at the Fe site. Both the Hall and the Seebeck coefficient values were positive, indicating that all..... More

Charge Transport and Thermoelectric Properties of P-type Bi2-xSbxTe3 Prepared by Mechanical Alloying and Hot Pressing
Kyung-Wook Jang, Hyeok-Jin Kim, Woo-Jin Jung, Il-Ho Kim
Korean J. Met. Mater. 2018;56(1):66-71.   Published online 2018 Jan 1
DOI: https://doi.org/10.3365/KJMM.2018.56.1.66

Bi2-xSbxTe3 (x = 1.4–1.7) solid solutions were synthesized by mechanical alloying (MA) and consolidated by hot pressing (HP), and their charge transport and thermoelectric properties were examined. The relative densities of the hot-pressed specimens were higher than 96% on average. As the Sb content was increased, the lattice constants decreased,..... More

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