Bidimensional X-ray Diffraction Analysis for Structural and Microstructural Characterization of Lanthanum Manganite Thin Films

2004 ◽  
Vol 108 (17) ◽  
pp. 5189-5191
Author(s):  
Ivano Alessandri ◽  
Marcello Gelfi ◽  
Elza Bontempi ◽  
Roberto Roberti ◽  
Laura E. Depero
1989 ◽  
Vol 25 (2) ◽  
pp. 2245-2249 ◽  
Author(s):  
J. Sizemore ◽  
R. Barton ◽  
A. Marshall ◽  
J.C. Bravman ◽  
M. Naito ◽  
...  

1988 ◽  
Vol 32 ◽  
pp. 269-278
Author(s):  
T. C. Huang ◽  
A. Segmuller ◽  
W. Lee ◽  
V. Lee ◽  
D. Bullock ◽  
...  

AbstractX-ray diffraction techniques have been used for the structure characterization of Y-Ba-Cu-O and Tl-Ca-Ba-Cu-O thin films. A powder diffraction analysis of Y-Ba-Cu-O films showed that the films deposited at 650°C on Si are polycrystalline and have an orthorhambic structure similar to that of the YBa2Cu3O7 bulk superconductors. In addition to the conventional powder diffraction technique, both the rocking curve and the grazing incidence diffraction methods were used to characterize a YBa2Cu3O7 film on (110) SrTiO3 substrate. Results showed that the film was epitaxially grown and aligned with its substrate in a true epitaxy. Phase identification and line broadening analyses of Tl-Ca-Ba-Cu-O films showed that the films are comprised of one or more superconducting phases and probably contain stacking faults.


2014 ◽  
Vol 805 ◽  
pp. 343-349
Author(s):  
Carine F. Machado ◽  
Weber G. Moravia

This work evaluated the influence of additions of the ceramic shell residue (CSR), from the industries of Lost Wax Casting, in the modulus of elasticity and porosity of concrete. The CSR was ground and underwent a physical, chemical, and microstructural characterization. It was also analyzed, the environmental risk of the residue. In the physical characterization of the residue were analyzed, the surface area, and particle size distribution. In chemical characterization, the material powder was subjected to testing of X-ray fluorescence (XRF). Microstructural characterization was performed by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The residue was utilized like addition by substitution of cement in concrete in the percentages of 10% and 15% by weight of Portland cement. It was evaluated properties of concrete in the fresh and hardened state, such as compressive strength, modulus of elasticity, absorption of water by total immersion and by capillarity. The results showed that the residue can be used in cement matrix and improve some properties of concrete. Thus, the CSR may contribute to improved sustainability and benefit the construction industry.


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