Effect of filler mass and binding on thermal conductivity of fully filled skutterudites
The relations between the thermal conductivity of cagelike structures and their crystal parameters are investigated using a two-dimensional toy model. The model consists of host atoms on a rectangular lattice with fillers at the center of each rectangle. The effect of mass and size of the filler on...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2011
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| Online Access: | http://hdl.handle.net/1721.1/64673 https://orcid.org/0000-0002-3968-8530 |
| _version_ | 1826216134931644416 |
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| author | Zebarjadi, Mona Esfarjani, Keivan Yang, Jian Ren, Z. F. Chen, Gang |
| author2 | Massachusetts Institute of Technology. Department of Mechanical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Mechanical Engineering Zebarjadi, Mona Esfarjani, Keivan Yang, Jian Ren, Z. F. Chen, Gang |
| author_sort | Zebarjadi, Mona |
| collection | MIT |
| description | The relations between the thermal conductivity of cagelike structures and their crystal parameters are investigated using a two-dimensional toy model. The model consists of host atoms on a rectangular lattice with fillers at the center of each rectangle. The effect of mass and size of the filler on thermal conductivity is investigated using equilibrium molecular-dynamics simulations. We show that the thermal conductivity decreases with increasing atomic displacement parameter while it has local minima versus the filler to host mass ratio. Similar trends were observed in experiments on filled skutterudites. The trends are explained by analyzing the effect of the filler on the phonon dispersion and relaxation times of the host material. |
| first_indexed | 2024-09-23T16:42:50Z |
| format | Article |
| id | mit-1721.1/64673 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T16:42:50Z |
| publishDate | 2011 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/646732022-10-03T07:45:27Z Effect of filler mass and binding on thermal conductivity of fully filled skutterudites Zebarjadi, Mona Esfarjani, Keivan Yang, Jian Ren, Z. F. Chen, Gang Massachusetts Institute of Technology. Department of Mechanical Engineering Chen, Gang Zebarjadi, Mona Esfarjani, Keivan Chen, Gang The relations between the thermal conductivity of cagelike structures and their crystal parameters are investigated using a two-dimensional toy model. The model consists of host atoms on a rectangular lattice with fillers at the center of each rectangle. The effect of mass and size of the filler on thermal conductivity is investigated using equilibrium molecular-dynamics simulations. We show that the thermal conductivity decreases with increasing atomic displacement parameter while it has local minima versus the filler to host mass ratio. Similar trends were observed in experiments on filled skutterudites. The trends are explained by analyzing the effect of the filler on the phonon dispersion and relaxation times of the host material. United States. Dept. of Energy (DOE grant no. DE-FG02-09ER46577) Solid-State Solar-Thermal Energy Conversion Center Robert Bosch GmbH Massachusetts Institute of Technology. Energy Initiative 2011-06-24T22:13:13Z 2011-06-24T22:13:13Z 2010-11 2010-07 Article http://purl.org/eprint/type/JournalArticle 1098-0121 1550-235X http://hdl.handle.net/1721.1/64673 Zebarjadi, Mona et al. “Effect of filler mass and binding on thermal conductivity of fully filled skutterudites.” Physical Review B 82.19 (2010) : n. pag. © 2010 The American Physical Society https://orcid.org/0000-0002-3968-8530 en_US http://dx.doi.org/10.1103/PhysRevB.82.195207 Physical review B Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Physical Society APS |
| spellingShingle | Zebarjadi, Mona Esfarjani, Keivan Yang, Jian Ren, Z. F. Chen, Gang Effect of filler mass and binding on thermal conductivity of fully filled skutterudites |
| title | Effect of filler mass and binding on thermal conductivity of fully filled skutterudites |
| title_full | Effect of filler mass and binding on thermal conductivity of fully filled skutterudites |
| title_fullStr | Effect of filler mass and binding on thermal conductivity of fully filled skutterudites |
| title_full_unstemmed | Effect of filler mass and binding on thermal conductivity of fully filled skutterudites |
| title_short | Effect of filler mass and binding on thermal conductivity of fully filled skutterudites |
| title_sort | effect of filler mass and binding on thermal conductivity of fully filled skutterudites |
| url | http://hdl.handle.net/1721.1/64673 https://orcid.org/0000-0002-3968-8530 |
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