scholarly journals Glass Transition of Ultrathin Sugar Films Probed by X-Ray Reflectivity

Carbohydrate ◽  
10.5772/66432 ◽  
2017 ◽  
Author(s):  
Shigesaburo Ogawa ◽  
Isao Takahashi
Keyword(s):  

2001 ◽  
Vol 64 (6) ◽  
Author(s):  
R. Weber ◽  
K.-M. Zimmermann ◽  
M. Tolan ◽  
J. Stettner ◽  
W. Press ◽  
...  
Keyword(s):  


Author(s):  
K. Ota ◽  
K. Hajlaoui ◽  
G. Vaughan ◽  
Marco Di Michiel ◽  
Dmitri V. Louzguine-Luzgin ◽  
...  


2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Jian Hui ◽  
Haiqian Ma ◽  
Zheyu Wu ◽  
Zhan Zhang ◽  
Yang Ren ◽  
...  

AbstractA high-throughput investigation of metallic glass formation via solid-state reaction was reported in this paper. Combinatorial multilayered thin-film chips covering the entire Ti–Ni–Cu ternary system were prepared using ion beam sputtering technique. Microbeam synchrotron X-ray diffraction (XRD) and X-ray fluorescence (XRF) measurements were conducted, with 1,325 data points collected from each chip, to map out the composition and the phase constitution before and after annealing at 373 K for 110 hours. The composition dependence of the crystal-to-glass transition by solid-state reaction was surveyed using this approach. The resulting composition–phase map is consistent with previously reported results. Time-of-flight secondary ion mass spectroscopy (ToF-SIMS) was performed on the representative compositions to determine the inter-diffusion between layers, the result shows that the diffusion of Ti is the key factor for the crystal-to-glass transition. In addition, both layer thickness and layer sequence play important roles as well. This work demonstrates that combinatorial chip technique is an efficient way for systematic and rapid study of crystal-to-glass transition for multi-component alloy systems.



2004 ◽  
Vol 37 (24) ◽  
pp. 8813-8815 ◽  
Author(s):  
Jörn Erichsen ◽  
Kai Dolgner ◽  
Vladimir Zaporojtchenko ◽  
Franz Faupel


2012 ◽  
Vol 23 ◽  
pp. 111-115 ◽  
Author(s):  
Cang Fan ◽  
H.G. Yan ◽  
C.T. Liu ◽  
H.Q. Li ◽  
P.K. Liaw ◽  
...  




1992 ◽  
Vol 293 ◽  
Author(s):  
B.V.R. Chowdari ◽  
K.L. Tan ◽  
W.T. Chia

AbstractThe conductivity of the Li2O:P2O5:MO3 (M = Cr2, Mo, W) glasses increases as P2O5 is progressively substituted by MO3 and as the Li2O content increases. Amongst the glass compositions studied, the 0.50Li2O:0.20P2O5:0.30WO3 glass has the highest conductivity at 25°C of 2. 1×10−6 ×−1 cm−1. The glass transition temperature of the glasses increases initially with network former substitution, reaches a maximum at around MO3/P2O5 = 1, and decreases with further substitution. X-ray photoelectron spectroscopy reveals the presence of M ions in more than one oxidation state and oxygen species such as P=O, P-O-P, P-O, M-O-M, M-O and P-O-M. Raman spectroscopy shows that the Li2O:P2O5:MoO3 and Li2O:P2O5:WO3 glasses consist of PO4, MoO4 (WO4) and MoO6 (WO6) polyhedra while the Li2O:P2O5:Cr2O3 glasses consist of the PO4 and CrO6 polyhedra only. The phosphate groups are preferentially modified by Li2O in comparison with the tungstate, molybdate and chromate groups. The increasing number of non-bridging oxygen atoms per phosphate group may be related to the increasing conductivity with the progressive substitution of MO3 for P2O5.





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