Thermal conductivity of PrRh4.8B2, a layered boride compound
Transmission electron microscopy (TEM), specific heat, and thermal conductivity measurements were carried out for PrRh4.8B2 single crystals. PrRh4.8B2 takes an interesting layered crystal structure, where PrRh3B2 blocks are separated by metal Rh honeycomb layers. The existence of the Rh layers enhan...
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2017-12-01
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| Series: | APL Materials |
| Online Access: | http://dx.doi.org/10.1063/1.5005869 |
| _version_ | 1819070688045039616 |
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| author | Yohei Kakefuda Kunio Yubuta Toetsu Shishido Akira Yoshikawa Shigeru Okada Hiraku Ogino Naoyuki Kawamoto Tetsuya Baba Takao Mori |
| author_facet | Yohei Kakefuda Kunio Yubuta Toetsu Shishido Akira Yoshikawa Shigeru Okada Hiraku Ogino Naoyuki Kawamoto Tetsuya Baba Takao Mori |
| author_sort | Yohei Kakefuda |
| collection | DOAJ |
| description | Transmission electron microscopy (TEM), specific heat, and thermal conductivity measurements were carried out for PrRh4.8B2 single crystals. PrRh4.8B2 takes an interesting layered crystal structure, where PrRh3B2 blocks are separated by metal Rh honeycomb layers. The existence of the Rh layers enhances the ferrimagnetic transition temperature. From area-selective picosecond thermoreflectance, the cross-plane thermal conductivity of PrRh4.8B2 is estimated to be 1.39 Wm−1 K−1, much lower than other layered borides like AlB2. Judging from the fine crystal structures obtained by TEM, phonon conduction is considered to be depressed due to random dispersion of Rh vacancy sites and two-dimensional nature of PrRh4.8B2. |
| first_indexed | 2024-12-21T17:09:54Z |
| format | Article |
| id | doaj.art-828c695fbea04f4b870eaeaecf28c06b |
| institution | Directory Open Access Journal |
| issn | 2166-532X |
| language | English |
| last_indexed | 2024-12-21T17:09:54Z |
| publishDate | 2017-12-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | APL Materials |
| spelling | doaj.art-828c695fbea04f4b870eaeaecf28c06b2022-12-21T18:56:26ZengAIP Publishing LLCAPL Materials2166-532X2017-12-01512126103126103-710.1063/1.5005869005712APMThermal conductivity of PrRh4.8B2, a layered boride compoundYohei Kakefuda0Kunio Yubuta1Toetsu Shishido2Akira Yoshikawa3Shigeru Okada4Hiraku Ogino5Naoyuki Kawamoto6Tetsuya Baba7Takao Mori8National Institute for Materials Science (NIMS), MANA, 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, JapanInstitute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, JapanKokushikan University, 4-28-1 Setagaya, Tokyo 154-8515, JapanElectronics and Photonics Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Central 2, Umezono, Tsukuba 305-8568, JapanNational Institute for Materials Science (NIMS), MANA, Namiki 1-1, Tsukuba 305-0044, JapanNational Institute for Materials Science (NIMS), MANA, Namiki 1-1, Tsukuba 305-0044, JapanNational Institute for Materials Science (NIMS), MANA, Namiki 1-1, Tsukuba 305-0044, JapanTransmission electron microscopy (TEM), specific heat, and thermal conductivity measurements were carried out for PrRh4.8B2 single crystals. PrRh4.8B2 takes an interesting layered crystal structure, where PrRh3B2 blocks are separated by metal Rh honeycomb layers. The existence of the Rh layers enhances the ferrimagnetic transition temperature. From area-selective picosecond thermoreflectance, the cross-plane thermal conductivity of PrRh4.8B2 is estimated to be 1.39 Wm−1 K−1, much lower than other layered borides like AlB2. Judging from the fine crystal structures obtained by TEM, phonon conduction is considered to be depressed due to random dispersion of Rh vacancy sites and two-dimensional nature of PrRh4.8B2.http://dx.doi.org/10.1063/1.5005869 |
| spellingShingle | Yohei Kakefuda Kunio Yubuta Toetsu Shishido Akira Yoshikawa Shigeru Okada Hiraku Ogino Naoyuki Kawamoto Tetsuya Baba Takao Mori Thermal conductivity of PrRh4.8B2, a layered boride compound APL Materials |
| title | Thermal conductivity of PrRh4.8B2, a layered boride compound |
| title_full | Thermal conductivity of PrRh4.8B2, a layered boride compound |
| title_fullStr | Thermal conductivity of PrRh4.8B2, a layered boride compound |
| title_full_unstemmed | Thermal conductivity of PrRh4.8B2, a layered boride compound |
| title_short | Thermal conductivity of PrRh4.8B2, a layered boride compound |
| title_sort | thermal conductivity of prrh4 8b2 a layered boride compound |
| url | http://dx.doi.org/10.1063/1.5005869 |
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