Phase transition temperature and negative thermal expansion of Sc-substituted In2(MoO4)3 ceramics

2020 ◽  
Vol 55 (14) ◽  
pp. 5730-5740
Author(s):  
Zhiping Zhang ◽  
Yuenan Wang ◽  
Weikang Sun ◽  
Xiuyun Zhang ◽  
Hongfei Liu ◽  
...  
2008 ◽  
Vol 47 (2) ◽  
pp. 736-741 ◽  
Author(s):  
Klaartje De Buysser ◽  
Isabel Van Driessche ◽  
Bart Vande Putte ◽  
Paul Vanhee ◽  
Joseph Schaubroeck ◽  
...  

2021 ◽  
Author(s):  
Huanli Yuan ◽  
Chunyan Wang ◽  
QiLong Gao ◽  
Gaojie Zeng ◽  
Juan Guo ◽  
...  

Chemical flexibility of A2M3O12-based compounds enables design of materials with versatile functionalities such as ferroelastic switching, ion conduction and negative thermal expansion (NTE) above ferroelastic transition temperature (Tt), promising for...


2019 ◽  
Vol 6 (7) ◽  
pp. 1842-1850 ◽  
Author(s):  
Hongfei Liu ◽  
Weikang Sun ◽  
Zhiping Zhang ◽  
Xiuyun Zhang ◽  
Yuxue Zhou ◽  
...  

Sc3+substitution reduces theTcof Al2Mo3O12and makes it show stable negative thermal expansion in a wider temperature range.


2014 ◽  
Vol 116 (12) ◽  
pp. 123510 ◽  
Author(s):  
Joe Sakai ◽  
Mustapha Zaghrioui ◽  
Masaaki Matsushima ◽  
Hiroshi Funakubo ◽  
Kunio Okimura

2020 ◽  
Vol 46 (3) ◽  
pp. 3979-3983 ◽  
Author(s):  
Alison Madrid ◽  
Patricia I. Pontón ◽  
Flávio Garcia ◽  
Michel B. Johnson ◽  
Mary Anne White ◽  
...  

2012 ◽  
Vol 535-537 ◽  
pp. 42-46
Author(s):  
Xiang Yang Guo ◽  
Chun Zhen Fan ◽  
Xian Sheng Liu ◽  
Wen Bo Song ◽  
Chun Xiao Cheng ◽  
...  

ZrO2-ZrW2O8 diphasic composites with controllable coefficients of thermal expansion (CTEs) are synthesized by rapid in-situ reactive sintering with ZrO2 and WO3 as reactants. High density of ZrO2-ZrW2O8 composites without decomposition of ZrW2O8 is obtained with Y2O3 sintering additive. The CTEs of specimen with ZrO2 to ZrW2O8 mass ratio 1:1.0, 1:1.3, 1:1.5 and 1:2.0 are measured to be about 1.20×10−6, 0.31×10−6, -0.78×10−6 and -1.13×10−6 K−1, respectively. Raman mappings demonstrate homogenous dispersions of ZrO2 and ZrW2O8 in the ZrO2-ZrW2O8 composites. In addition to the role as sintering additive, some Y3+ cations enter the lattice to substitute Zr4+ in ZrW2O8, leading to an increase in disorder and a decrease in phase transition temperature of ZrW2O8 in the composites.


Author(s):  
Uwe Lücken ◽  
Joachim Jäger

TEM imaging of frozen-hydrated lipid vesicles has been done by several groups Thermotrophic and lyotrophic polymorphism has been reported. By using image processing, computer simulation and tilt experiments, we tried to learn about the influence of freezing-stress and defocus artifacts on the lipid polymorphism and fine structure of the bilayer profile. We show integrated membrane proteins do modulate the bilayer structure and the morphology of the vesicles.Phase transitions of DMPC vesicles were visualized after freezing under equilibrium conditions at different temperatures in a controlled-environment vitrification system. Below the main phase transition temperature of 24°C (Fig. 1), vesicles show a facetted appearance due to the quasicrystalline areas. A gradual increase in temperature leads to melting processes with different morphology in the bilayer profile. Far above the phase transition temperature the bilayer profile is still present. In the band-pass-filtered images (Fig. 2) no significant change in the width of the bilayer profile is visible.


Sign in / Sign up

Export Citation Format

Share Document