Reduced Local Symmetry in Lithium Compound Li2SrSiO4 Distinguished by an Eu3+ Spectroscopy Probe

被引：28

作者：

Chen, Lei ^{[1
,2
]}

Cheng, Peng ^{[1
]}

Zhang, Zhao ^{[1
]}

He, Liangrui ^{[1
]}

Jiang, Yang ^{[1
]}

Li, Guobao ^{[3
]}

Jing, Xiping ^{[3
]}

Qin, Yan'guang ^{[4
]}

Yin, Min ^{[4
]}

Chan, Ting-Shan ^{[5
]}

Hong, Bin ^{[6
]}

Tao, Shi ^{[7
]}

Chu, Wangsheng ^{[7
]}

Zhao, Zhi ^{[8
]}

Ni, Haiyong ^{[9
]}

Kohlmann, Holger ^{[10
]}

Oeckler, Oliver ^{[11
]}

机构：

[1] Hefei Univ Technol, Sch Mat Sci & Engn, Hefei 230009, Anhui, Peoples R China

[2] Hefei Univ Technol, Intelligent Mfg Inst, Hefei 230051, Anhui, Peoples R China

[3] Peking Univ, Coll Chem & Mol Engn, Beijing 100871, Peoples R China

[4] Univ Sci & Technol China, Dept Phys, Hefei 230026, Anhui, Peoples R China

[5] Natl Synchrotron Radiat Res Ctr, Hsinchu 30076, Taiwan

[6] Beihang Univ, Hefei Innovat Res Inst, Hefei 230013, Anhui, Peoples R China

[7] Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230026, Anhui, Peoples R China

[8] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China

[9] Guangdong Acad Sci, Guangdong Res Inst Rare Met, Guangzhou 510651, Guangdong, Peoples R China

[10] Univ Leipzig, Inst Anorgan Chem, Johannisallee 29, D-04103 Leipzig, Germany

[11] Univ Leipzig, Inst Mineral Kristallog & Mat Wissensch, Scharnhorststr 20, D-04275 Leipzig, Germany

来源：

ADVANCED SCIENCE | 2019年 / 6卷 / 16期

关键词：

crystal structures; Eu3+ spectroscopy probes; lithium compounds; luminescence; symmetry breaking; CRYSTAL-STRUCTURE; ENERGY-LEVELS; PHOSPHOR; LIGHT; SITE; PHOTOLUMINESCENCE; EMISSION; SILICATE; SPECTRA; CE3+;

D O I：

10.1002/advs.201802126

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Research on lithium compounds has attracted much attention nowadays. However, to elucidate the precise structure of lithium compounds is a challenge, especially when considering the small ions that may be transferred between the interstitial voids. Here, the discovery of reduced local symmetry (symmetry breaking) in small domains of Li2SrSiO4 is reported by employing Eu3+ as a spectroscopic probe, for which X-ray, neutron, and electron diffraction have confirmed the average long-range structure with the space group P3(1)21. However, luminescence shows a lower local symmetry, as confirmed by the extended X-ray absorption fine structure. By considering the reduced symmetry of the local structure, this work opens the door to a new class of understanding of the properties of materials.

引用

页数：9

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