Synthesis and negative thermal expansion property of Y2−xLaxW3O12 (0≤x≤2)

2013 ◽  
Vol 39 (3) ◽  
pp. 2781-2786 ◽  
Author(s):  
Hongfei Liu ◽  
Zhiping Zhang ◽  
Wei Zhang ◽  
Xianghua Zeng ◽  
Xiaobing Chen
Keyword(s):  
Thermal Expansion ◽  
Negative Thermal Expansion ◽  
Thermal Expansion Property ◽  
Expansion Property

Enhanced Negative Thermal Expansion Property Deduced by the Breaks of Superstructure

2021 ◽  
Vol 13 (4) ◽  
pp. 556-562
Author(s):  
Niu Zhang ◽  
Ming-Yi Wu ◽  
Ya-Ming Liu ◽  
Meng-Jie Yang ◽  
Ming-Ju Chao ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Thermal Expansion ◽  
Wide Temperature Range ◽  
Potential Application ◽  
Negative Thermal Expansion ◽  
Thermal Expansion Property ◽  
Expansion Property ◽  
Good Potential ◽  
Nested Structure

The HfV2O7/HfMo2O8 composite were prepared in situ. The phase, structure and thermal expansion property were analyzed. The results indicate the composite consist of cubic HfV2O7 and hexagonal HfMo2O8. The two types of structures were coexisted and mixed uniformly, and interacted with each other. The mutual nested structure suppressed the formation of 3×3×3 superstructure in HfV2O7 (RT) introduced by the reaction in situ. The promoted coupled rotation of quasi-rigid polyhedron units could enhance the negative thermal expansion (NTE) property. The HfV2O7/HfMo2O8 composite exhibits excellent NTE property from 250 to 673 K (at least) with CTE -3.09 × 10-6 K-1. The good NTE property and thermal stability over a wide temperature range, especially near the RT range, bring a good potential application in designing zero thermal expansion materials.

Preparation and Negative Thermal Expansion Property of ZrWMoO8

2010 ◽  
Vol 177 ◽  
pp. 245-248
Author(s):  
Juan Yang ◽  
Qin Qin Liu ◽  
Chuang Liang Zang ◽  
Xiao Nong Cheng
Keyword(s):  
Thermal Expansion ◽  
Negative Thermal Expansion ◽  
Mechanical Analysis ◽  
Cell Parameters ◽  
Thermal Expansion Property ◽  
In Situ Xrd ◽  
Structure And Morphology ◽  
Expansion Property ◽  
Different Temperatures

Negative thermal expansion (NTE) material ZrWMoO8 was prepared by hydrothermal method. The phase structure and morphology of the obtained precursor and final product were examined by XRD and SEM, respectively. To study its negative thermal expansion property, two methods were utilized. One is based on the in-situ XRD results and the thermal expansion coefficient (CTE) was calculated by the cell parameters obtained at different temperatures. Another is based on the thermo-mechanical analysis (TMA) and the CTE was calculated by the length of ZrWMoO8 bar at different temperatures. The differences between these two methods were also discussed.

Negative thermal expansion property of Er0.7Sr0.3NiO3−δ

2014 ◽  
Vol 378 (28-29) ◽  
pp. 1909-1912 ◽  
Author(s):  
Linjie Fu ◽  
Mingju Chao ◽  
He Chen ◽  
Xiansheng Liu ◽  
Yaming Liu ◽  
...  
Keyword(s):  
Thermal Expansion ◽  
Negative Thermal Expansion ◽  
Thermal Expansion Property ◽  
Expansion Property

Negative thermal expansion property of Zn2V1.7P0.3O7

2021 ◽  
pp. 106515
Author(s):  
Yanwen Zhu ◽  
Rui Chen ◽  
Lu Chen ◽  
Mingju Chao ◽  
Juan Guo ◽  
...  
Keyword(s):  
Thermal Expansion ◽  
Negative Thermal Expansion ◽  
Thermal Expansion Property ◽  
Expansion Property
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