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| Giant negative thermal expansion covering room temperature in nanocrystalline GaNxMn3 | |
| Lin, JC; Tong, P; Zhou, XJ; Lin, H; Ding, YW; Bai, YX; Chen, L; Guo, XG; Yang, C; Song, B; Wu, Y; Lin, S; Song, WH; Sun, YP; Lin, JC (reprint author), Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China. | |
| 2015 | |
| Source Publication | APPLIED PHYSICS LETTERS
 |
| ISSN | 0003-6951 |
| Volume | 107Issue:13Pages:— |
| Subtype | 期刊文献 |
| Abstract | Nanocrystalline antiperovskite GaNxMn3 powders were prepared by mechanically milling. The micrograin GaNxMn3 exhibits an abrupt volume contraction at the antiferromagnetic (AFM) to paramagnetic (PM) (AFM-PM) transition. The temperature window of volume contraction (Delta T) is broadened to 50 K as the average grain size (< D >) is reduced to similar to 30 nm. The corresponding coefficient of linear thermal expansion (alpha) reaches similar to -70 ppm/K, which are comparable to those of giant NTE materials. Further reducing < D > to similar to 10 nm, Delta T exceeds 100K and alpha remains as large as -30 ppm/K (-21 ppm/K) for x = 1.0 (x = 0.9). Excess atomic displacements together with the reduced structural coherence, revealed by high-energy X-ray pair distribution functions, are suggested to delay the AFM-PM transition. By controlling < D >, giant NTE may also be achievable in other materials with large lattice contraction due to electronic or magnetic phase transitions. (C) 2015 AIP Publishing LLC. |
| Keyword | Antiperovskite Manganese Nitride Window |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000362575600017 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.sinap.ac.cn/handle/331007/24936 |
| Collection | 中科院上海应用物理研究所2011-2020年 |
| Corresponding Author | Lin, JC (reprint author), Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China. |
| Recommended Citation GB/T 7714 | Lin, JC,Tong, P,Zhou, XJ,et al. Giant negative thermal expansion covering room temperature in nanocrystalline GaNxMn3[J]. APPLIED PHYSICS LETTERS,2015,107(13):—. |
| APA | Lin, JC.,Tong, P.,Zhou, XJ.,Lin, H.,Ding, YW.,...&Lin, JC .(2015).Giant negative thermal expansion covering room temperature in nanocrystalline GaNxMn3.APPLIED PHYSICS LETTERS,107(13),—. |
| MLA | Lin, JC,et al."Giant negative thermal expansion covering room temperature in nanocrystalline GaNxMn3".APPLIED PHYSICS LETTERS 107.13(2015):—. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Giant negative therm（2105KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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