• Title/Summary/Keyword: and materials

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Investigation of the Thermal-to-Electrical Properties of Transition Metal-Sb Alloys Synthesized for Thermoelectric Applications

  • Jong Min Park;Seungki Jo;Sooho Jung;Jinhee Bae;Linh Ba Vu;Kwi-Il Park;Kyung Tae Kim
    • Journal of Powder Materials
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    • v.31 no.3
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    • pp.236-242
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    • 2024

  • The development of thermoelectric (TE) materials to replace Bi2Te3 alloys is emerging as a hot issue with the potential for wider practical applications. In particular, layered Zintl-phase materials, which can appropriately control carrier and phonon transport behaviors, are being considered as promising candidates. However, limited data have been reported on the thermoelectric properties of metal-Sb materials that can be transformed into layered materials through the insertion of cations. In this study, we synthesized FeSb and MnSb, which are used as base materials for advanced thermoelectric materials. They were confirmed as single-phase materials by analyzing X-ray diffraction patterns. Based on electrical conductivity, the Seebeck coefficient, and thermal conductivity of both materials characterized as a function of temperature, the zT values of MnSb and FeSb were calculated to be 0.00119 and 0.00026, respectively. These properties provide a fundamental data for developing layered Zintl-phase materials with alkali/alkaline earth metal insertions.

  • https://doi.org/10.4150/jpm.2024.00031 인용 PDF

NUCLEAR ENERGY MATERIALS PREDICTION: APPLICATION OF THE MULTI-SCALE MODELLING PARADIGM

  • Samaras, Maria;Victoria, Maximo;Hoffelner, Wolfgang
    • Nuclear Engineering and Technology
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    • v.41 no.1
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    • pp.1-10
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    • 2009

  • The safe and reliable performance of fusion and fission plants depends on the choice of suitable materials and an assessment of long-term materials degradation. These materials are degraded by their exposure to extreme conditions; it is necessary, therefore, to address the issue of long-term damage evolution of materials under service exposure in advanced plants. The empirical approach to the study of structural materials and fuels is reaching its limit when used to define and extrapolate new materials, new environments, or new operating conditions due to a lack of knowledge of the basic principles and mechanisms present. Materials designed for future Gen IV systems require significant innovation for the new environments that the materials will be exposed to. Thus, it is a challenge to understand the materials more precisely and to go far beyond the current empirical design methodology. Breakthrough technology is being achieved with the incorporation in design codes of a fundamental understanding of the properties of materials. This paper discusses the multi-scale, multi-code computations and multi-dimensional modelling undertaken to understand the mechanical properties of these materials. Such an approach is envisaged to probe beyond currently possible approaches to become a predictive tool in estimating the mechanical properties and lifetimes of materials.

  • https://doi.org/10.5516/NET.2009.41.1.001 인용 PDF KSCI

ANALYSIS OF SrTiO$_3$STEP-FLOW GROWTH BY RHEED

  • Shin, Dong-Suk;Lee, Ho-Nyung;Kim,Yong-Tae;Chol, In-Hoon;Kim, Chang-Jung;Kim, T.Y.;Lee, J.K.;Chung, Il-Sub
    • Proceedings of the Materials Research Society of Korea Conference
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    • 1998.08a
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    • pp.65.2-65
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    • 1998

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