Sm-Co-based amorphous alloy films for zero-field operation of transverse thermoelectric generation
Transverse thermoelectric generation using magnetic materials is essential to develop active thermal engineering technologies, for which the improvements of not only the thermoelectric output but also applicability and versatility are required. In this study, using combinatorial material science and...
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| Format: | Article |
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Taylor & Francis Group
2022-12-01
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| Series: | Science and Technology of Advanced Materials |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/14686996.2022.2138538 |
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| author | Rajkumar Modak Yuya Sakuraba Takamasa Hirai Takashi Yagi Hossein Sepehri-Amin Weinan Zhou Hiroto Masuda Takeshi Seki Koki Takanashi Tadakatsu Ohkubo Ken-ichi Uchida |
| author_facet | Rajkumar Modak Yuya Sakuraba Takamasa Hirai Takashi Yagi Hossein Sepehri-Amin Weinan Zhou Hiroto Masuda Takeshi Seki Koki Takanashi Tadakatsu Ohkubo Ken-ichi Uchida |
| author_sort | Rajkumar Modak |
| collection | DOAJ |
| description | Transverse thermoelectric generation using magnetic materials is essential to develop active thermal engineering technologies, for which the improvements of not only the thermoelectric output but also applicability and versatility are required. In this study, using combinatorial material science and lock-in thermography technique, we have systematically investigated the transverse thermoelectric performance of Sm-Co-based alloy films. The high-throughput material investigation revealed the best Sm-Co-based alloys with the large anomalous Nernst effect (ANE) as well as the anomalous Ettingshausen effect (AEE). In addition to ANE/AEE, we discovered unique and superior material properties in these alloys: the amorphous structure, low thermal conductivity, and large in-plane coercivity and remanent magnetization. These properties make it advantageous over conventional materials to realize heat flux sensing applications based on ANE, as our Sm-Co-based films can generate thermoelectric output without an external magnetic field. Importantly, the amorphous nature enables the fabrication of these films on various substrates including flexible sheets, making the large-scale and low-cost manufacturing easier. Our demonstration will provide a pathway to develop flexible transverse thermoelectric devices for smart thermal management. |
| format | Article |
| id | doaj-art-6b16cbcc3b2c4023b5a8b41c5e7f2b2c |
| institution | OA Journals |
| issn | 1468-6996 1878-5514 |
| language | English |
| publishDate | 2022-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Science and Technology of Advanced Materials |
| spelling | doaj-art-6b16cbcc3b2c4023b5a8b41c5e7f2b2c2025-08-20T01:52:31ZengTaylor & Francis GroupScience and Technology of Advanced Materials1468-69961878-55142022-12-0123176778210.1080/14686996.2022.2138538Sm-Co-based amorphous alloy films for zero-field operation of transverse thermoelectric generationRajkumar Modak0Yuya Sakuraba1Takamasa Hirai2Takashi Yagi3Hossein Sepehri-Amin4Weinan Zhou5Hiroto Masuda6Takeshi Seki7Koki Takanashi8Tadakatsu Ohkubo9Ken-ichi Uchida10Research Center for Magnetic and Spintronic Materials, National Institute for Materials Science, Tsukuba, JapanResearch Center for Magnetic and Spintronic Materials, National Institute for Materials Science, Tsukuba, JapanResearch Center for Magnetic and Spintronic Materials, National Institute for Materials Science, Tsukuba, JapanNational Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, Tsukuba, JapanResearch Center for Magnetic and Spintronic Materials, National Institute for Materials Science, Tsukuba, JapanResearch Center for Magnetic and Spintronic Materials, National Institute for Materials Science, Tsukuba, JapanInstitute for Materials Research, Tohoku University, Sendai, JapanResearch Center for Magnetic and Spintronic Materials, National Institute for Materials Science, Tsukuba, JapanInstitute for Materials Research, Tohoku University, Sendai, JapanResearch Center for Magnetic and Spintronic Materials, National Institute for Materials Science, Tsukuba, JapanResearch Center for Magnetic and Spintronic Materials, National Institute for Materials Science, Tsukuba, JapanTransverse thermoelectric generation using magnetic materials is essential to develop active thermal engineering technologies, for which the improvements of not only the thermoelectric output but also applicability and versatility are required. In this study, using combinatorial material science and lock-in thermography technique, we have systematically investigated the transverse thermoelectric performance of Sm-Co-based alloy films. The high-throughput material investigation revealed the best Sm-Co-based alloys with the large anomalous Nernst effect (ANE) as well as the anomalous Ettingshausen effect (AEE). In addition to ANE/AEE, we discovered unique and superior material properties in these alloys: the amorphous structure, low thermal conductivity, and large in-plane coercivity and remanent magnetization. These properties make it advantageous over conventional materials to realize heat flux sensing applications based on ANE, as our Sm-Co-based films can generate thermoelectric output without an external magnetic field. Importantly, the amorphous nature enables the fabrication of these films on various substrates including flexible sheets, making the large-scale and low-cost manufacturing easier. Our demonstration will provide a pathway to develop flexible transverse thermoelectric devices for smart thermal management.https://www.tandfonline.com/doi/10.1080/14686996.2022.2138538Transverse thermoelectric conversionmagnetic thin filmsrare-earth magnetamorphous alloyheat flux sensor |
| spellingShingle | Rajkumar Modak Yuya Sakuraba Takamasa Hirai Takashi Yagi Hossein Sepehri-Amin Weinan Zhou Hiroto Masuda Takeshi Seki Koki Takanashi Tadakatsu Ohkubo Ken-ichi Uchida Sm-Co-based amorphous alloy films for zero-field operation of transverse thermoelectric generation Science and Technology of Advanced Materials Transverse thermoelectric conversion magnetic thin films rare-earth magnet amorphous alloy heat flux sensor |
| title | Sm-Co-based amorphous alloy films for zero-field operation of transverse thermoelectric generation |
| title_full | Sm-Co-based amorphous alloy films for zero-field operation of transverse thermoelectric generation |
| title_fullStr | Sm-Co-based amorphous alloy films for zero-field operation of transverse thermoelectric generation |
| title_full_unstemmed | Sm-Co-based amorphous alloy films for zero-field operation of transverse thermoelectric generation |
| title_short | Sm-Co-based amorphous alloy films for zero-field operation of transverse thermoelectric generation |
| title_sort | sm co based amorphous alloy films for zero field operation of transverse thermoelectric generation |
| topic | Transverse thermoelectric conversion magnetic thin films rare-earth magnet amorphous alloy heat flux sensor |
| url | https://www.tandfonline.com/doi/10.1080/14686996.2022.2138538 |
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