Dynamical Spin Chirality and Magnetoelectric Effect of alpha-Glycine
文献类型：期刊论文
| 作者 | Shen Xin-Chun1; Wang Wen-Qing1; Gong Yan2; Zhang Yan3 |
| 刊名 | ACTA PHYSICO-CHIMICA SINICA
 |
| 出版日期 | 2008-12-01 |
| 卷号 | 24期号:12页码:2153-2158 |
| 关键词 | Alpha-glycine Dynamical Spin Chirality Magnetoelectric Effect Pyroelectricity Dc-magnetic Susceptibility Atomic Force Spectroscopy |
| ISSN号 | 1000-6818 |
| DOI | 10.1016/S1872-1508(08)60081-9 |
| 英文摘要 | Dynamical spin chirality of alpha-glycine crystal at 301-302 K wits investigated by DC (direct current)magnetic susceptibility measurement at temperatures ranging from 2 to 315 K under the external magnetic fields (H=+/- 1 T) parallel to the b axis. The alpha-glycine crystallizes in space group P2(1)/n with four molecules in a cell, which has centrosymmetric charge distribution. The bifurcated hydrogen bonds N+(3)-H(8)center dot center dot center dot O(1) and N+(3)-H(8)center dot center dot center dot O(2) are stacked along the b axis with different bond intensities and angles, which form anti-parallel double layers. Atomic force spectroscopy result at 303 K indicated that the surface molecular structures of alpha-glycine formed a regular flexuous framework in the b axis direction. The strong temperature dependence is related to the reorientation of NH3+ group and the electron spin flip-flop of (N+H) mode. Under the opposite external magnetic field of 1 T and -1 T, the electron spins of N+(3)-H(8)center dot center dot center dot O(1) and N+(3)-H(8)center dot center dot center dot O(2) flip-flop at 301-302 K. These results suggested a mechanism of the magnetoelectric effect based on the dynamical spin chirality of (N+H), which induced the electric polarization to produce the onset of pyroelectricity of alpha-glycine around 304 K. |
| 语种 | 英语 |
| WOS记录号 | WOS:000262024900002 |
| 出版者 | PEKING UNIV PRESS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/65105]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Wang Wen-Qing |
| 作者单位 | 1.Peking Univ, Dept Appl Chem, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China 2.Tsinghua Univ, Sch Med, Beijing 100084, Peoples R China 3.Peking Univ, Sch Phys, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shen Xin-Chun,Wang Wen-Qing,Gong Yan,et al. Dynamical Spin Chirality and Magnetoelectric Effect of alpha-Glycine[J]. ACTA PHYSICO-CHIMICA SINICA,2008,24(12):2153-2158. |
| APA | Shen Xin-Chun,Wang Wen-Qing,Gong Yan,&Zhang Yan.(2008).Dynamical Spin Chirality and Magnetoelectric Effect of alpha-Glycine.ACTA PHYSICO-CHIMICA SINICA,24(12),2153-2158. |
| MLA | Shen Xin-Chun,et al."Dynamical Spin Chirality and Magnetoelectric Effect of alpha-Glycine".ACTA PHYSICO-CHIMICA SINICA 24.12(2008):2153-2158. |
入库方式： OAI收割
来源：化学研究所
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