Mechanical properties and negative thermal expansion of a dense rare earth formate framework

被引：12

作者：

Zhang, Zhanrui ^{[1
]}

Jiang, Xingxing ^{[2
]}

Feng, Guoqiang ^{[3
,4
]}

Lin, Zheshuai ^{[2
]}

Hu, Bing ^{[5
]}

Li, Wei ^{[3
,4
]}

机构：

[1] Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, Wuhan 430074, Peoples R China

[2] Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Funct Crystals & Laser Technol, Ctr Crystal R&D, Beijing 100190, Peoples R China

[3] Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430074, Peoples R China

[4] Huazhong Univ Sci & Technol, Wuhan Natl High Magnet Field Ctr, Wuhan 430074, Peoples R China

[5] Chinese Acad Sci, Fujian Inst Res Struct Matter, Fuzhou 350002, Peoples R China

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2016年 / 233卷

基金：

中国国家自然科学基金;

关键词：

Metal-organic frameworks; Mechanical properties; Nanoindentation; Thermal expansion; METAL-ORGANIC FRAMEWORKS; ELASTIC-MODULUS; NANOINDENTATION; INDENTATION; TOPOLOGY; CRYSTALS; HARDNESS;

D O I：

10.1016/j.jssc.2015.10.043

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The fundamental mechanical properties of a dense metal-organic framework material, [NH2CHNH2][Er(HCOO)(4)] (1), have been studied using nanoindentation technique. The results demonstrate that the elastic moduli, hardnesses, and yield stresses on the (021)/(02-1) facets are 29.8/30.2, 1.80/1.83 and 0.93/1.01 GPa, respectively. Moreover, variable-temperature powder and single-crystal X-ray diffraction experiments reveal that framework I shows significant negative thermal expansion along its b axis, which can be explained by using a hinge-strut structural motif. (C) 2015 Elsevier Inc. All rights reserved.

引用

页码：289 / 293

页数：5

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