Search
Now showing items 1-10 of 30
Anisotropy of crystallite growth during sintering of SnO2 xerogels
(1996-12-01)
The crytallite and pore-size evolution during isothermal sintering (400 ≤ T ≤ 700°C) of SnO2 xerogels was studied by X-ray line broadening and nitrogen adsorption-desorption isotherms. The experimental results show a strong ...
Quantification of dislocations densities in zirconium hydride by X-ray line profile analysis
(Pergamon-Elsevier Science Ltd, 2016-09-17)
Zirconium-based components in nuclear power plants are embrittled by precipitates of δ zirconium hydride, which involves a martensitic-type transformation of the hexagonal α-Zr lattice into the face-centered cubic Zr ...
gamma Cassiopeiae: an X-ray Be star with personality
(EDP SCIENCES S A, 2010)
An exciting unsolved problem in the study of high energy processes of early type stars concerns the physical mechanism for producing X-rays near the Be star gamma Cassiopeiae. By now we know that this source and several ...
Anisotropic and Heterogeneous Development of Microstructures. Combining Laboratory/Synchrotron X-rays and EBSD on a few SPD Metallic Systems
(IOP Publishing, 2014-10)
The onset of Severe Plastic Deformation (SPD) regime is quite instructive on the possible origins of the nano-microstructures developed in metals and alloys. It is known that grain fragmentation and dislocation accumulation, ...
Magnetocrystalline interactions and oxidation state determination of Mn(2-x)V(1+x)O4 (x=0, 1/3 and 1) magnetorresistive spinel family
(Elsevier B.V., 2013-09-01)
Oxidation states of transition metal cations in spinels-type oxides are sometimes extremely difficult to determine by conventional spectroscopic methods. One of the most complex cases occurs when there are different cations, ...
Considerations about the variability of the bragg´S law fulfilment
(Revista Mexicana de Física, 2009)
Anisotropic lattice thermal expansion of PbFeBO4: A study by X-ray and neutron diffraction, Raman spectroscopy and DFT calculations
(Pergamon-Elsevier Science Ltd., 2014-11)
The lattice thermal expansion of mullite-type PbFeBO4 is presented in this study. The thermal expansion coefficients of the metric parameters were obtained from composite data collected from temperature-dependent neutron ...
Magnetocrystalline interactions and oxidation state determination of Mn(2−x)V(1+x)O4 (x=0, 1/3 and 1) magnetorresistive spinel family
(Elsevier Inc, 2013-07)
Oxidation states of transition metal cations in spinels-type oxides are sometimes extremely difficult to determine by conventional spectroscopic methods. One of the most complex cases occurs when there are different cations, ...