Giant negative thermal expansion covering room temperature in nanocrystalline GaNxMn3
文献类型：期刊论文
| 作者 | Lin, JC; Tong, P; Zhou, XJ; Lin, H; Ding, YW; Bai, YX; Chen, L; Guo, XG; Yang, C; Song, B |
| 刊名 | APPLIED PHYSICS LETTERS
 |
| 出版日期 | 2015 |
| 卷号 | 107期号:13页码:— |
| 关键词 | ANTIPEROVSKITE MANGANESE NITRIDE WINDOW |
| ISSN号 | 0003-6951 |
| 通讯作者 | Lin, JC (reprint author), Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China. |
| 英文摘要 | 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. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000362575600017 |
| 公开日期 | 2016-03-08 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/24936]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 推荐引用方式 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.,...&Sun, YP.(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):—. |
入库方式： OAI收割
来源：上海应用物理研究所
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