| Low thermal conductivity of Lu4Si2O7N2: Theoretical and experimental studies | |
| Sun, Luchao1; Tian, Zhilin1,2; Wang, Jingyang1 | |
| Corresponding Author | Wang, Jingyang(jywang@imr.ac.cn) |
| 2015-10-01 | |
| Source Publication | JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
 |
| ISSN | 0955-2219 |
| Volume | 35Issue:12Pages:3237-3247 |
| Abstract | Thermal conductivity of bulk and dense oxynitride Lu4Si2O7N2 was measured at various temperatures. Results show that Lu4Si2O7N2 possesses low thermal conductivity and has potential applications as thermal insulation material. Detailed analysis shows that the experimental thermal diffusivity is significantly influenced by defects at low temperature and infrared radiation at high temperature. Therefore, we combined Debye model and Slack's equation to predict the temperature dependent intrinsic lattice thermal conductivity of Lu4Si2O7N2. All parameters indispensable in the calculation (equilibrium crystal structure, second order elastic constants, elastic modulus, Debye temperature, and Gruneisen constant) were predicted with the help of first-principles calculation methods. Finally, factors that influence the thermal conductivity of Lu4Si2O7N2 were discussed and possible explanations for the difference between experimental and theoretical thermal conductivity were illustrated. (C) 2015 Elsevier Ltd. All rights reserved. |
| Keyword | Lutetium silicon oxynitride Low thermal conductivity First-principles calculation Experimental investigation |
| Funding Organization | Natural Sciences Foundation of China |
| DOI | 10.1016/j.jeurceramsoc.2015.02.030 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Natural Sciences Foundation of China[51032006] ; Natural Sciences Foundation of China[51372252] ; Natural Sciences Foundation of China[51402313] |
| WOS Research Area | Materials Science |
| WOS Subject | Materials Science, Ceramics |
| WOS ID | WOS:000357356000006 |
| Publisher | ELSEVIER SCI LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/80946 |
| Corresponding Author | Wang, Jingyang |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, High Performance Ceram Div, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| Recommended Citation GB/T 7714 | Sun, Luchao,Tian, Zhilin,Wang, Jingyang. Low thermal conductivity of Lu4Si2O7N2: Theoretical and experimental studies[J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,2015,35(12):3237-3247. |
| APA | Sun, Luchao,Tian, Zhilin,&Wang, Jingyang.(2015).Low thermal conductivity of Lu4Si2O7N2: Theoretical and experimental studies.JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,35(12),3237-3247. |
| MLA | Sun, Luchao,et al."Low thermal conductivity of Lu4Si2O7N2: Theoretical and experimental studies".JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 35.12(2015):3237-3247. |
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