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18 papers · 2 filters
Phase co-existence and structured diffuse scattering seen by X-ray 3D mapping of reciprocal space for Cs0.8Fe1.6Se2
A. Bosak, V. Svitlyk, A. Krzton-Maziopa +6
AxFe2-ySe2 (A=K, Rb, Cs) superconductors may show a complex mixture of structural phases even in a single crystal form. A full sphere of the diffraction intensity has been collecte…
The effect of compressive strain on the Raman modes of the dry and hydrated BaCe0.8Y0.2O3 proton conductor
Qianli Chen, Tzu-Wen Huang, Maria Baldini +7
The BaCe0.8Y0.2O3-δ proton conductor under hydration and under compressive strain has been analyzed with high pressure Raman spectroscopy and high pressure x-ray diffraction. The p…
Structural and magnetic dynamics of a laser induced phase transition in FeRh
S. O. Mariager, F. Pressacco, G. Ingold +11
We use time-resolved x-ray diffraction and magnetic optical Kerr effect to study the laser induced antiferromagnetic to ferromagnetic phase transition in FeRh. The structural respo…
Pulsed laser deposition growth of heteroepitaxial YBa2Cu3O7/La0.67Ca0.33MnO3 superlattices on NdGaO3 and Sr0.7La0.3Al0.65Ta0.35O3 substrates
V. K. Malik, I. Marozau, S. Das +9
Heteroepitaxial superlattices of [YBa2Cu3O7(n)/ La0.67Ca0.33MnO3(m)]x, where n and m are the number of YBCO and LCMO monolayers and x the number of bilayer repetitions, have been g…
Phonon spectrum, thermal expansion and heat capacity of UO from first-principles
Younsuk Yun, Dominik Legut, Peter M. Oppeneer
We report first-principles calculations of the phonon dispersion spectrum, thermal expansion, and heat capacity of uranium dioxide. The so-called direct method, based on the quasih…
Formation of iron nitride thin films with Al and Ti additives
Rachana Gupta, Akhil Tayal, Mukul Gupta +3
In this work we investigate the process of iron nitride (Fe-N) phase formation using 2 at.% Al or 2 at.% Ti as additives. The samples were prepared with a magnetron sputtering tech…