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Related papers: Structural changes of Ti3SiC2 induced by helium ir…

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The structure of titanium films on \alpha - Al2O3(0001) surfaces at room temperature was investigated through in situ reflection high energy electron diffraction (RHEED). The \alpha-phase of titanium was observed to grow with the Ti(0001)…

Materials Science · Physics 2007-05-23 E. Sondergard , O. Kerjan , C. Barreteau , J. Jupille

We studied the crystal and magnetic structure of Ca2RuO4 by different diffraction techniques under high pressure. The observed first order phase transition at moderate pressure (0.5 GPa) between the insulating phase and the metallic high…

Strongly Correlated Electrons · Physics 2009-11-11 P. Steffens , O. Friedt , P. Alireza , W. G. Marshall , W. Schmidt , F. Nakamura , S. Nakatsuji , Y. Maeno , R. Lengsdorf , M. M. Abd-Elmeguid , M. Braden

This work extends our Object Kinetic Monte Carlo model for neutron irradiation-induced nanostructure evolution in Fe-C alloys to consider higher irradiation temperatures. The previous study concentrated on irradiation temperatures < 370 K.…

Materials Science · Physics 2014-07-29 Ville Jansson , Monica Chiapetto , Lorenzo Malerba

A high-intensity proton beam exposure with 181 MeV energy has been conducted at Brookhaven Linac Isotope Producer facility on various material specimens for accelerator targetry applications, including titanium alloys as a beam window…

To elucidate the mechanism by which THz radiation non-thermally affects living organisms, the lateral diffusion constants of lipid molecules in the cell membranes of HeLa cells were measured using fluorescence recovery after photobleaching…

Biological Physics · Physics 2024-12-10 Hiromichi Hoshina

We examine the temperature structure of the intergalactic medium IGM) surounding a hard radiation source, such as a Quasi-Stellar Object (QSO), as it responds to the onset of helium reionization by the source. We model the reionization…

Cosmology and Nongalactic Astrophysics · Physics 2010-04-28 Avery Meiksin , Eric R. Tittley , Calum K. Brown

Lithium doped sodium niobate is an ecofriendly piezoelectric material that exhibits a variety of structural phase transitions with composition and temperature. We have investigated the phase stabilities of an important composition…

Room and high temperature mechanical properties of reactive magnetron sputtered TaSiN coatings were measured using nanoindentation (between 25C and 500C). Fracture toughness was also evaluated at a similar temperature range using the…

Defect engineering is applied to hybrid (CH$_3$NH$_3$)PbI$_3$ organic-inorganic perovskites. These materials have become one of the most promising low-cost alternatives to traditional semiconductors in the field of photovoltaics and light…

Wadsley--Roth crystallographic shear phases form a family of compounds that have attracted attention due to their excellent performance as lithium-ion battery electrodes. The complex crystallographic structure of these materials poses a…

Materials Science · Physics 2019-09-26 Can P. Koçer , Kent J. Griffith , Clare P. Grey , Andrew J. Morris

When calcium titanate crystals are grown from stoichiometric melts, they crystallize in the cubic perovskite structure. Upon cooling to room temperature they undergo subsequent phase transitions to tetragonal and orthorhombic modifications.…

Materials Science · Physics 2018-02-02 Detlef Klimm , Max Schmidt , Nora Wolff , Christo Guguschev , Steffen Ganschow

The effects of ageing at 800 $^\circ$C on the properties of the IRIS alloy (Ti$_{49.9}$Al$_{48}$W$_2$B$_{0.1}$) are studied. The initial microstructure of this alloy densified by Spark Plasma Sintering (SPS) is mainly composed of lamellar…

We investigated the complex interaction between a nickel layer and a 4H-SiC substrate under UV-laser irradiation since the early stages of the atomic inter-diffusion. An exhaustive description is still lacking in the literature. A…

We solve the equations of radiation hydrodynamics in the two-temperature fluid approximation on an adaptive grid. The temperature structure depends upon the electron-ion energy exchange length, $l_{ei}$, and the electron conduction length,…

Astrophysics · Physics 2007-05-23 M W Sincell , M Gehmeyr , D Mihalas

We discovered the enhancement of superconducting transition temperature, Tc, in yttrium sesquicarbide system with the maximum Tc of Tc=18K and their superconducting properties were discussed. The crystal structure of Y2C3 is the…

Superconductivity · Physics 2007-05-23 G. Amano , S. Akutagawa , T. Muranaka , Y. Zenitani , J. Akimitsu

Thermal stability of hydrogenated amorphous Si/Ge multilayers has been investigated by Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM) and Small-Angle X-Ray Diffraction (SAXRD) techniques. Amorphous H-Si/Ge…

Materials Science · Physics 2009-02-11 A. Csik , M. Serenyi , Z. Erdelyi , A. Nemcsics , C. Cserhati , G. A. Langer , D. L. Beke , C. Frigeri , A. Simon

Ti/Cu multilayers with periods ranging from 4 to 52.5 nm were synthesized by magnetron sputtering to examine how the period thickness affects morphology, crystallization, texture development, and preservation of periodicity. The structural…

Understand the nature of liquid structure and its evolution under different conditions is a major challenge in condensed physics and materials science. Here, we report a pressure-induced structure change spanning a wide pressure range in…

Materials Science · Physics 2025-01-28 X. Z. Yan , Y. M. Chen , Hua Y. Geng , Y. F. Wang , Y. Sun , L. L. Zhang , H. Wang , Y. L. Xu

We examine the impact of helium reionization on the structure of the intergalactic medium (IGM). We model the reionization using a radiative transfer (RT) code coupled to the combined gravity hydrodynamics code Enzo. Neutral hydrogen and…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-30 A. Meiksin , E. R. Tittley

Effects of x-ray irradiation on the crystal structure and the electrical resistance were examined at low temperatures for the insulating phase of spinel compound CuIr2S4. We found that the resistance decreases by more than five decades by…

Strongly Correlated Electrons · Physics 2015-06-24 Takao Furubayashi , Hiroyuki Suzuki , Takehiko Matsumoto , Shoichi Nagata
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