Materials Characterization

Journal: Materials Characterization

Abbreviation

Mater. charact.

Publisher

Elsevier

ISSN

1044-5803
1873-4189

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Publications 1 - 10 of 10

Microstructure of selective laser melted nickel-titanium
Bormann, Therese; Müller, Bert; Schinhammer, Michael; et al. (2014)
Materials Characterization
Single-phase high-entropy alloys – A critical update
Steurer, Walter (2020)
Materials Characterization
X-ray dark-field contrast imaging of water transport during hydration and drying of early-age cement-based materials
Yang, Fei; Prade, Friedrich; Griffa, Michele; et al. (2018)
Materials Characterization
Weathering of soapstone in a historical perspective
Storemyr, Per (2004)
Materials Characterization
Microstructure characterization by X-ray tomography and EBSD of porous FeCr produced by liquid metal dealloying
Mokhtari, Morgane; Le Bourlot, Christophe; Adrien, Jérome; et al. (2018)
Materials Characterization
Micro-mechanical properties of cement paste measured by depth-sensing nanoindentation
Hughes, John J.; Trtik, Pavel (2004)
Materials Characterization
Correlating laser energy with compositional and atomic-level information of oxides in atom probe tomography
Hunnestad, Kasper A.; Hatzoglou, Constantinos; Vurpillot, François; et al. (2023)
Materials Characterization
Atom probe tomography (APT) is a 3D analysis technique that offers unique chemical accuracy and sensitivity with sub-nanometer spatial resolution. There is an increasing interest in the application of APT to complex oxides materials, giving new insight into the relation between local variations in chemical composition and emergent physical properties. However, in contrast to the field of metallurgy, where APT is routinely applied to study materials at the atomic level, complex oxides and their specific field evaporation mechanisms are much less explored. Here, we perform APT measurements on the hexagonal manganite ErMnO3 and systematically study the effect of different experimental parameters on the measured composition and structure. We demonstrate that both the mass resolving power (MRP) and compositional accuracy can be improved by increasing the charge-state ratio (CSR) working at low laser energy (< 5 pJ) for a given fixed detection rate. Furthermore, we observe a substantial preferential retention of Er atoms, which is suppressed at higher CSRs. We explain our findings based on fundamental field evaporation concepts, expanding the knowledge about the impact of key experimental parameters and the field evaporation process in complex oxides in general.
Synthesis pathways of (HfZrTiCe/La/Y)O₂₋ₓ nanoparticles via benzyl alcohol route at critical temperature
Guo, Fangwei; Hu, Yanping; Zhang, Wenchen; et al. (2024)
Materials Characterization
The controllable synthesis of high-entropy fluorite oxide (HEO) having large ionic radius mismatch remains a challenging due to poor understanding on nucleation. The (HfZrTiLn)-5HEO nanoparticles with 15 % ionic radius mismatch were synthesized via benzyl alcohol route at 220 °C-5 min in presence of PtCl₄ and Fe(acac)₃, exhibiting novel optical, electrical and magnetic properties. Nucleation pathways of the 5HEO at the critical temperature were elucidated by using a comparison study of conventional heating and microwave irradiation heating. Consistency of XRD patterns and STEM-EDX observation indicate that the resultant Hf-OBn monomers acted as the nucleation center of the 5HEO, determined by diffusion kinetics. The nucleation rate depended on the metal monomers assembly and esterification reaction, which was accelerated by water vapor pressure produced in-situ by 0.5×10⁻⁴mol/l PtCl4 catalyst. The Fe-metal organic cages derived from 1.5×10⁻⁴mol/l Fe(acac)₃ additive served as the structure stabilizer of Zr/Ti monomers, and prevented early hydrothermal reaction route.
Neutron radiography and X-ray computed tomography for quantifying weathering and water uptake processes inside porous limestone used as building material
Dewanckele, J.; De Kock, T.; Fronteau, G.; et al. (2014)
Materials Characterization
Nanoscale analysis of dispersive ferroelectric domains in bulk of hexagonal multiferroic ceramics
Baghizadeh, Ali; Vieira, Joaquim M.; Stroppa, Daniel G.; et al. (2018)
Materials Characterization

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Journal: Materials Characterization

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