Thermal conductivity of layered borides: The effect of building defects on the thermal conductivity of TmAlB4 and the anisotropic thermal conductivity of AlB2
Rare earth metal borides have attracted great interest due to their unusual properties, such as superconductivity and f-electron magnetism. A recent discovery attributes the tunability of magnetism in rare earth aluminoborides to the effect of so-called “building defects.” In this paper, we report d...
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2014-04-01
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| Series: | APL Materials |
| Online Access: | http://dx.doi.org/10.1063/1.4871797 |
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| author | X. J. Wang T. Mori I. Kuzmych-Ianchuk Y. Michiue K. Yubuta T. Shishido Y. Grin S. Okada D. G. Cahill |
| author_facet | X. J. Wang T. Mori I. Kuzmych-Ianchuk Y. Michiue K. Yubuta T. Shishido Y. Grin S. Okada D. G. Cahill |
| author_sort | X. J. Wang |
| collection | DOAJ |
| description | Rare earth metal borides have attracted great interest due to their unusual properties, such as superconductivity and f-electron magnetism. A recent discovery attributes the tunability of magnetism in rare earth aluminoborides to the effect of so-called “building defects.” In this paper, we report data for the effect of building defects on the thermal conductivities of α-TmAlB4 single crystals. Building defects reduce the thermal conductivity of α-TmAlB4 by ≈30%. At room temperature, the thermal conductivity of AlB2 is nearly a factor of 5 higher than that of α-TmAlB4. AlB2 single crystals are thermally anisotropic with the c-axis thermal conductivity nearly twice the thermal conductivity of the a-b plane. Temperature dependence of the thermal conductivity near and above room temperature reveals that both electrons and phonons contribute substantially to thermal transport in AlB2 with electrons being the dominant heat carriers. |
| first_indexed | 2024-12-19T19:28:37Z |
| format | Article |
| id | doaj.art-ede8e1fa59764e7a834558204cc2cbe4 |
| institution | Directory Open Access Journal |
| issn | 2166-532X |
| language | English |
| last_indexed | 2024-12-19T19:28:37Z |
| publishDate | 2014-04-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | APL Materials |
| spelling | doaj.art-ede8e1fa59764e7a834558204cc2cbe42022-12-21T20:08:41ZengAIP Publishing LLCAPL Materials2166-532X2014-04-0124046113046113-610.1063/1.4871797012404APMThermal conductivity of layered borides: The effect of building defects on the thermal conductivity of TmAlB4 and the anisotropic thermal conductivity of AlB2X. J. Wang0T. Mori1I. Kuzmych-Ianchuk2Y. Michiue3K. Yubuta4T. Shishido5Y. Grin6S. Okada7D. G. Cahill8Department of Materials Science and Engineering and Materials Research Laboratory, University of Illinois, Urbana, Illinois 61801, USAInternational Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba 305-0044, JapanInternational Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba 305-0044, JapanInternational Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba 305-0044, JapanInstitute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, JapanInstitute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, JapanMax-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Str. 40, 01187 Dresden, GermanyFaculty of Science and Engineering, Kokushikan University, 4-28-1 Setagaya, Tokyo 154-8515, JapanDepartment of Materials Science and Engineering and Materials Research Laboratory, University of Illinois, Urbana, Illinois 61801, USARare earth metal borides have attracted great interest due to their unusual properties, such as superconductivity and f-electron magnetism. A recent discovery attributes the tunability of magnetism in rare earth aluminoborides to the effect of so-called “building defects.” In this paper, we report data for the effect of building defects on the thermal conductivities of α-TmAlB4 single crystals. Building defects reduce the thermal conductivity of α-TmAlB4 by ≈30%. At room temperature, the thermal conductivity of AlB2 is nearly a factor of 5 higher than that of α-TmAlB4. AlB2 single crystals are thermally anisotropic with the c-axis thermal conductivity nearly twice the thermal conductivity of the a-b plane. Temperature dependence of the thermal conductivity near and above room temperature reveals that both electrons and phonons contribute substantially to thermal transport in AlB2 with electrons being the dominant heat carriers.http://dx.doi.org/10.1063/1.4871797 |
| spellingShingle | X. J. Wang T. Mori I. Kuzmych-Ianchuk Y. Michiue K. Yubuta T. Shishido Y. Grin S. Okada D. G. Cahill Thermal conductivity of layered borides: The effect of building defects on the thermal conductivity of TmAlB4 and the anisotropic thermal conductivity of AlB2 APL Materials |
| title | Thermal conductivity of layered borides: The effect of building defects on the thermal conductivity of TmAlB4 and the anisotropic thermal conductivity of AlB2 |
| title_full | Thermal conductivity of layered borides: The effect of building defects on the thermal conductivity of TmAlB4 and the anisotropic thermal conductivity of AlB2 |
| title_fullStr | Thermal conductivity of layered borides: The effect of building defects on the thermal conductivity of TmAlB4 and the anisotropic thermal conductivity of AlB2 |
| title_full_unstemmed | Thermal conductivity of layered borides: The effect of building defects on the thermal conductivity of TmAlB4 and the anisotropic thermal conductivity of AlB2 |
| title_short | Thermal conductivity of layered borides: The effect of building defects on the thermal conductivity of TmAlB4 and the anisotropic thermal conductivity of AlB2 |
| title_sort | thermal conductivity of layered borides the effect of building defects on the thermal conductivity of tmalb4 and the anisotropic thermal conductivity of alb2 |
| url | http://dx.doi.org/10.1063/1.4871797 |
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