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  1. Article ; Online: Enhanced thermoelectric properties of In-filled Co

    Ghosh, Sanyukta / Jain, Shubhanth / Mishra, Soumya Ranjan / Rogl, Gerda / Rogl, Peter / Bauer, Ernst / Murty, B S / Govindaraj, A / Mallik, Ramesh Chandra

    Dalton transactions (Cambridge, England : 2003)

    2024  Volume 53, Issue 2, Page(s) 715–723

    Abstract: Uniform dispersion of nanosized secondary phases in bulk thermoelectric materials has proven to be an effective strategy to reduce the lattice part of thermal conductivity and improve the thermoelectric efficiency. In this work, reduced graphene oxide ( ... ...

    Abstract Uniform dispersion of nanosized secondary phases in bulk thermoelectric materials has proven to be an effective strategy to reduce the lattice part of thermal conductivity and improve the thermoelectric efficiency. In this work, reduced graphene oxide (rGO) was uniformly dispersed in the In
    Language English
    Publishing date 2024-01-02
    Publishing country England
    Document type Journal Article
    ZDB-ID 1472887-4
    ISSN 1477-9234 ; 1364-5447 ; 0300-9246 ; 1477-9226
    ISSN (online) 1477-9234 ; 1364-5447
    ISSN 0300-9246 ; 1477-9226
    DOI 10.1039/d3dt03399f
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Preferential phonon scattering and low energy carrier filtering by interfaces of

    Ghosh, Sanyukta / Shankar, Gyan / Karati, Anirudha / Rogl, Gerda / Rogl, Peter / Bauer, Ernst / Murty, B S / Suwas, Satyam / Mallik, Ramesh Chandra

    Dalton transactions (Cambridge, England : 2003)

    2020  Volume 49, Issue 44, Page(s) 15883–15894

    Abstract: Filling the voids of cage forming compounds with loosely bound electropositive elements and by incorporating nano-sized secondary phases are promising approaches to enhance the thermoelectric figure of merit of these materials. Hence, in this work, by ... ...

    Abstract Filling the voids of cage forming compounds with loosely bound electropositive elements and by incorporating nano-sized secondary phases are promising approaches to enhance the thermoelectric figure of merit of these materials. Hence, in this work, by combining these two approaches-inserting In into the voids of skutterudite Co4Sb12 as well as dispersing nanoparticles (GaSb)-we have synthesized various samples via ball-milling and spark plasma sintering. InSb as the secondary phase of the matrix, mixed with GaSb, forms the solid solution Ga1-xInxSb. Nanocrystalline grains together with a few larger grains (10-30 μm) are found to be spread in In0.2Co4Sb12. The former is comprised of either InSb, GaSb or Ga1-xInxSb. Because of their identical space group and similar lattice parameters, InSb, GaSb and Ga1-xInxSb could not be detected separately in EBSD. High resolution transmission electron microscopy (HRTEM) was used to resolve different phases, which showed GaSb grains of size ∼10-30 nm and InSb grains of size ∼30-100 nm. Scattering of charge carriers at the interfaces of InSb, GaSb and Ga1-xInxSb as well as the matrix phases increased both the electrical resistivity and Seebeck coefficient. The multi-scale size distribution of grains, of both the matrix phase and the secondary phases, scattered phonons within a broad wavelength range, resulting in very low lattice thermal conductivities. As a result, an enhanced figure of merit of 1.4 was achieved for the (GaSb)0.1 + In0.2Co4Sb12 nanocomposite at 773 K.
    Language English
    Publishing date 2020-11-06
    Publishing country England
    Document type Journal Article
    ZDB-ID 1472887-4
    ISSN 1477-9234 ; 1364-5447 ; 0300-9246 ; 1477-9226
    ISSN (online) 1477-9234 ; 1364-5447
    ISSN 0300-9246 ; 1477-9226
    DOI 10.1039/d0dt03429k
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Ti

    Karati, Anirudha / Nagini, M / Ghosh, Sanyukta / Shabadi, Rajashekhara / Pradeep, K G / Mallik, Ramesh Chandra / Murty, B S / Varadaraju, U V

    Scientific reports

    2019  Volume 9, Issue 1, Page(s) 5331

    Abstract: A new single phase high entropy alloy, ... ...

    Abstract A new single phase high entropy alloy, Ti
    Language English
    Publishing date 2019-03-29
    Publishing country England
    Document type Journal Article
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-019-41818-6
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Thermoelectric properties of Co

    Ghosh, Sanyukta / Bisht, Anuj / Karati, Anirudha / Rogl, Gerda / Rogl, Peter / Murty, B S / Suwas, Satyam / Mallik, Ramesh Chandra

    Journal of physics. Condensed matter : an Institute of Physics journal

    2018  Volume 30, Issue 9, Page(s) 95701

    Abstract: The figure of merit (zT) of a thermoelectric material can be enhanced by incorporation of nanoinclusions into bulk material. The presence of bismuth telluride ( ... ...

    Abstract The figure of merit (zT) of a thermoelectric material can be enhanced by incorporation of nanoinclusions into bulk material. The presence of bismuth telluride (Bi
    Language English
    Publishing date 2018-03-07
    Publishing country England
    Document type Journal Article
    ZDB-ID 1472968-4
    ISSN 1361-648X ; 0953-8984
    ISSN (online) 1361-648X
    ISSN 0953-8984
    DOI 10.1088/1361-648X/aaa5ea
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Enhanced Thermoelectric Performance in the Ba

    Ghosh, Sanyukta / Shankar, Gyan / Karati, Anirudha / Werbach, Katharina / Rogl, Gerda / Rogl, Peter / Bauer, Ernst / Murty, B S / Suwas, Satyam / Mallik, Ramesh Chandra

    ACS applied materials & interfaces

    2020  Volume 12, Issue 43, Page(s) 48729–48740

    Abstract: The thermoelectric efficiency of skutterudite materials can be improved by lowering the lattice thermal conductivity via the uniform dispersion of a nanosized second phase in the matrix of filled ... ...

    Abstract The thermoelectric efficiency of skutterudite materials can be improved by lowering the lattice thermal conductivity via the uniform dispersion of a nanosized second phase in the matrix of filled Co
    Language English
    Publishing date 2020-10-19
    Publishing country United States
    Document type Journal Article
    ISSN 1944-8252
    ISSN (online) 1944-8252
    DOI 10.1021/acsami.0c17254
    Database MEDical Literature Analysis and Retrieval System OnLINE

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