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Korean J. Met. Mater.
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Korean Journal of Metals and Materials
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Korean J. Met. Mater.
2022;60(6):440-447. Published online 2022 May 24
DOI:
https://doi.org/10.3365/KJMM.2022.60.6.440
Abstract
Si-doped Cu
12
Sb
4-y
Si
y
S
13
(y = 0.1-0.4) compounds were prepared using solid-state synthesis. Each specimen consisted of a single tetrahedrite phase with a densely sintered body whose relative density exceeded 98.9%. The lattice constant decreased from 1.0357 nm to 1.0336 nm as the Si content increased. When the Si doping content (y).....
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Korean J. Met. Mater.
2022;60(5):376-383. Published online 2022 Apr 22
DOI:
https://doi.org/10.3365/KJMM.2022.60.5.376
Abstract
Ge-doped tetrahedrites Cu
12
Sb
4-y
Ge
y
S
13
(
y
= 0.1–0.4) were prepared using mechanical alloying and hot pressing. An X-ray diffraction analysis after mechanical alloying showed a single tetrahedrite phase without secondary phases. The tetrahedrite phase was stable after hot pressing at 723 K under 70 MPa. As the Ge content increased, the lattice.....
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Korean J. Met. Mater.
2021;59(10):724-731. Published online 2021 Sep 6
DOI:
https://doi.org/10.3365/KJMM.2021.59.10.724
Abstract
In this study, tetrahedrite compounds doped with Sn were prepared by mechanical alloying and hot pressing, and their charge transport and thermoelectric properties were analyzed. X-ray diffraction analysis revealed that both the synthetic powders and sintered bodies were synthesized as a single tetrahedrite phase without secondary phases. Densely sintered specimens.....
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Crossref 4
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Korean J. Met. Mater.
2021;59(8):560-566. Published online 2021 Jul 5
DOI:
https://doi.org/10.3365/KJMM.2021.59.8.560
Abstract
Tetrahedrite is a promising thermoelectric material mainly due to its low thermal conductivity, a consequence of its complicated crystal structure. However, tetrahedrite has a high hole concentration; therefore, optimizing carrier concentration through doping is required to maximize the power factor. In this study, Te-doped tetrahedrites Cu
12
Sb
4-y
Te
y
S
13
(0.1 ≤ y ≤.....
More
Crossref 1
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Korean J. Met. Mater.
2021;59(5):329-335. Published online 2021 Apr 6
DOI:
https://doi.org/10.3365/KJMM.2021.59.5.329
Abstract
Mn-doped tetrahedrites Cu
12-x
Mn
x
Sb
4
S
13
(0.1 ≤ x ≤ 0.4) were synthesized by mechanical alloying (MA) and sintered by hot pressing (HP). A single tetrahedrite phase was synthesized by MA without post-annealing, and it was stable without any phase changes after HP. The hot-pressed specimens had a relative density higher than 98.6%......
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Web of Science 1
Crossref 1
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Korean J. Met. Mater.
2020;58(5):340-347. Published online 2020 Apr 20
DOI:
https://doi.org/10.3365/KJMM.2020.58.5.340
Abstract
Tetrahedrite (C
12
Sb
4
S
13
) has attracted attention as a p-type thermoeletric material with very low thermal conductivity induced by the anharmonic oscillation of Cu due to the lone-pair electrons of Sb. Many studies have been conducted to improve its thermoelectric performance by partially substituting the transition elements for the Cu sites. In.....
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Web of Science 9
Crossref 10
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Korean J. Met. Mater.
2020;58(4):272-277. Published online 2020 Mar 9
DOI:
https://doi.org/10.3365/KJMM.2020.58.4.272
Abstract
Tetrahedrite has low lattice thermal conductivity because of the lone-pair electrons of Sb, which cause the Cu atoms to vibrate at a low frequency and high amplitude. The synthesis of tetrahedrite compounds by conventional melting methods requires a long-time reaction and annealing. However, a homogeneous and solid-state synthesis can be.....
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Web of Science 18
Crossref 18
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Korean J. Met. Mater.
2019;57(5):328-333. Published online 2019 Apr 10
DOI:
https://doi.org/10.3365/KJMM.2019.57.5.328
Abstract
Tetrahedrite Cu12Sb4S13 has low lattice thermal conductivity because of the lone-pair electrons of Sb, which cause the Cu atoms to vibrate at a low frequency and high amplitude. When the Cu atoms of Cu12Sb4S13 are partially substituted with a transition metal, changes in the Cu vibrations can intensify phonon scattering,.....
More
Web of Science 8
Crossref 6
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