ICCAS OpenIR
Dynamical Spin Chirality and Magnetoelectric Effect of alpha-Glycine
Shen Xin-Chun1; Wang Wen-Qing1; Gong Yan2; Zhang Yan3
2008-12-01
Source PublicationACTA PHYSICO-CHIMICA SINICA
ISSN1000-6818
Volume24Issue:12Pages:2153-2158
AbstractDynamical 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.
KeywordAlpha-glycine Dynamical Spin Chirality Magnetoelectric Effect Pyroelectricity Dc-magnetic Susceptibility Atomic Force Spectroscopy
DOI10.1016/S1872-1508(08)60081-9
Indexed BySCI
Language英语
WOS IDWOS:000262024900002
PublisherPEKING UNIV PRESS
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/65106
Collection中国科学院化学研究所
Corresponding AuthorWang Wen-Qing
Affiliation1.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
Recommended Citation
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.
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