Results 31 to 40 of about 147,619 (289)
Synthesis of zirconia-based solid acid nanoparticles for fuel cell application
Journal of Energy in Southern Africa, 2016 Zirconia nanoparticles were prepared by the precipitation and ageing methods. The precipitation method was performed by adding ammonium solution to the aqueous solution of zirconium chloride at room temperature. The ageing method was performed by leaving
Rudzani A Sigwadi +3 more
doaj +1 more source
, 2018 We have carried out systematic temperature-dependent neutron diffraction measurements in conjunction with dielectric spectroscopy from 6 to 300 K for sodium niobate based compounds (1-x) NaNbO3 -xBaTiO3 (NNBTx).
Chaplot, S. L. +5 more
core +1 more source
Low-temperature structural model of hcp solid C$_{70}$
, 1998 We report intermolecular potential-energy calculations for solid C_${70}$ and determine the optimum static orientations of the molecules at low temperature; we find them to be consistent with the monoclinic structural model proposed by us in an earlier ...
B. J. Nelissen +21 more
core +1 more source
Epitaxy of III-Nitrides on β-Ga2O3 and Its Vertical Structure LEDs
Micromachines, 2019 β-Ga2O3, characterized with high n-type conductivity, little lattice mismatch with III-Nitrides, high transparency (>80%) in blue, and UVA (400–320 nm) as well as UVB (320–280 nm) regions, has great potential as the substrate for ...
Weijiang Li +6 more
doaj +1 more source
Atomistic studies of transformation pathways and energetics in plutonium
, 2008 One of the most challenging problems in understanding the structural phase transformations in Pu is to determine the energetically favored, continuous atomic pathways from one crystal symmetry to another.
A. Saxena +7 more
core +1 more source
A monoclinic polymorph of cysteamine hydrochloride [PDF]
Acta Crystallographica Section E Structure Reports Online, 2009 cloruro de 2-mercaptoetano-aminio), C(2)H(8)NS(+)·Cl(-), la sal de hidrocloruro de cisteamina, en contraste con el polimorfo triclínico previamente informado [Kim et al. (2002▶). Polyhedron, 21, 225-228], cristalizado en el sistema cristalino monoclínico.
Saeed Ahmad +2 more
openaire +4 more sources
Advanced Engineering Materials, EarlyView.New features on yttria‐stabilized zirconia after exposure at 1500°C: Newly discovered pyramidal structures on an old material. After exposure at 1550°C on the cross section of YSZ new features, namely pyramidal structures are discovered. These structures grow with time, increase in numbers, appear as singularities, are often arranged in strings, and ...
Doris Sebold +2 more
wiley +1 more source
Monoclinic and triclinic phases in higher-order Devonshire theory [PDF]
, 1999 Devonshire theory provides a successful phenomenological description of many cubic perovskite ferroelectrics such as BaTiO3 via a sixth-order expansion of the free energy in the polar order parameter.
Gallimore, Alec D. +2 more
core +2 more sources
Tailoring Functional Properties of Ti–Ni–Cu Shape Memory Alloy Thin Films for MEMS Actuators
Advanced Engineering Materials, EarlyView.A comprehensive study of critical parameters required to develop well‐performing Ti–Ni–Cu thin film shape memory alloy microactuators is provided. Materials science and device integration aspects are integrated by addressing structural and physical relationships using complementary characterization techniques as well as a practical fabrication solution
Elaheh Akbarnejad +6 more
wiley +1 more source
The Low‐Temperature Besnus Magnetic Transition: Signals Due to Monoclinic and Hexagonal Pyrrhotite
Geochemistry, Geophysics, Geosystems, 2018 The low‐temperature magnetic properties of the many pyrrhotite varieties have not been studied extensively. Monoclinic pyrrhotite (Fe7S8) goes through the Besnus transition at ~30–34 K, which is used widely to diagnose its presence in bulk samples. Other
Chorng‐Shern Horng, Andrew P. Roberts
doaj +1 more source