NANOCRYSTALLINE Ni Al ALLOY OBTAINED BY MECHANICAL
... These features make the Ni3Al intermetallic compound a very attractive material for structural applications at elevated temperatures in hostile environments [2]. In the recent years a number of studies have been reported on obtaining Ni-25%Al (at.%) alloy by MA of elemental powder mixtures [3]. The ...
... These features make the Ni3Al intermetallic compound a very attractive material for structural applications at elevated temperatures in hostile environments [2]. In the recent years a number of studies have been reported on obtaining Ni-25%Al (at.%) alloy by MA of elemental powder mixtures [3]. The ...
Topological Analysis of Electron Density
... At a critical point, the eigenvalues of the Hessian are all real and are generally non-zero. The rank of the critical point is defined as the number of non-zero eigenvalues, while the signature is defined as the algebraic sum of the signs of the eigenvalues. These two characteristics are used to lab ...
... At a critical point, the eigenvalues of the Hessian are all real and are generally non-zero. The rank of the critical point is defined as the number of non-zero eigenvalues, while the signature is defined as the algebraic sum of the signs of the eigenvalues. These two characteristics are used to lab ...
Environmental Embrittlement Characteristics of the AlFe and AlCuFe
... and Processing of Intermetallic Compounds" Chapman & Hall, Edited by N. S. Stoloff and V. K. Sikka, 351, 479 ...
... and Processing of Intermetallic Compounds" Chapman & Hall, Edited by N. S. Stoloff and V. K. Sikka, 351, 479 ...
Location of Trapped Electron Centers in the Bulk of Epitaxial MgO
... Figure 1(a) shows the X-band (9-GHz) EPR spectrum of a pristine 20-ML-thick MgO(001) film grown on Mo(001) at room temperature with the magnetic field oriented in the surface plane along the [110] direction. The spectrum exhibits a single resonance close to the g value of the free electron with a li ...
... Figure 1(a) shows the X-band (9-GHz) EPR spectrum of a pristine 20-ML-thick MgO(001) film grown on Mo(001) at room temperature with the magnetic field oriented in the surface plane along the [110] direction. The spectrum exhibits a single resonance close to the g value of the free electron with a li ...
4 characteristics - Warren County Schools
... blues = copper yellows = sodium hemotite (iron) = gold ...
... blues = copper yellows = sodium hemotite (iron) = gold ...
Physical Properties of Minerals
... Describe seven physical properties that help distinguish one mineral from another. ...
... Describe seven physical properties that help distinguish one mineral from another. ...
Monolayer Single-Crystal 1T′-MoTe2 Grown by
... substrate, a procedure was developed where the SiO2 interface layer was etched using hydrofluoric acid (HF). In this process, the sample is first spin coated with C4 PMMA (Microchem) at 3000 rpm for 60 s, and then the sample is carefully floated on top of a dilute HF solution (1:50 in DI water). The sa ...
... substrate, a procedure was developed where the SiO2 interface layer was etched using hydrofluoric acid (HF). In this process, the sample is first spin coated with C4 PMMA (Microchem) at 3000 rpm for 60 s, and then the sample is carefully floated on top of a dilute HF solution (1:50 in DI water). The sa ...
jyvaskla2 - School of Chemistry
... leave the critical point and terminate at infinity. These are part of a family of trajectories defining the zero flux surface. (r)n(r) = 0 The scalar product of (r) with n(r) the vector normal to the surface. This surface encloses each atom and defines a sub-space – the quantum topological defi ...
... leave the critical point and terminate at infinity. These are part of a family of trajectories defining the zero flux surface. (r)n(r) = 0 The scalar product of (r) with n(r) the vector normal to the surface. This surface encloses each atom and defines a sub-space – the quantum topological defi ...
Obtaining structural information from the atomic pair
... the fit (Dc2 < 0) is accepted. ‘Bad’ moves worsening the agreement between the observed and calculated PDF are accepted with a probability of P ¼ exp ðDc2 =2Þ. As the value of Dc2 is proportional to 1=s 2 , the value of s has an influence on the amount of ‘bad’ moves which will be accepted. Obvious ...
... the fit (Dc2 < 0) is accepted. ‘Bad’ moves worsening the agreement between the observed and calculated PDF are accepted with a probability of P ¼ exp ðDc2 =2Þ. As the value of Dc2 is proportional to 1=s 2 , the value of s has an influence on the amount of ‘bad’ moves which will be accepted. Obvious ...
Crystal field effects in chromium and its partitioning in the mantle
... the mantle and crust. CRYSTAL FIELD ENERGIES The electronic configuration of elemental chromium ( ls22s22~63,63s23~63d54~1 s [A]3d54$) is such that all oxidation states from Cr(V1) to Cr(1) can occur. In terrestrial minerals in the crust, the Cr(II1) and Cr(V1) states predominate as the ions Cr3+([A ...
... the mantle and crust. CRYSTAL FIELD ENERGIES The electronic configuration of elemental chromium ( ls22s22~63,63s23~63d54~1 s [A]3d54$) is such that all oxidation states from Cr(V1) to Cr(1) can occur. In terrestrial minerals in the crust, the Cr(II1) and Cr(V1) states predominate as the ions Cr3+([A ...
quartz and feldspar microstructures in metamorphic rocks
... Ftc. 11. a) Commonly observed "rational-impingement" triple junction between two random grains of quatlz and a grain of biotite with (001) planes (shown diagrammatically by parallel lines) perpendicular to the plane of the drawing. b) Hypothetical "adjustment" triple junction with a mica versus quar ...
... Ftc. 11. a) Commonly observed "rational-impingement" triple junction between two random grains of quatlz and a grain of biotite with (001) planes (shown diagrammatically by parallel lines) perpendicular to the plane of the drawing. b) Hypothetical "adjustment" triple junction with a mica versus quar ...
Identification of ferroelectric domain structure sensitive phonon
... the complete set of back-scattering geometries, which is summarized in Table I. Due to back-scattering, only phonons propagating along main crystal axes will be excited. As the direction of lattice displacements for each symmetry species is given, we are further able to distinguish LO and TO modes. ...
... the complete set of back-scattering geometries, which is summarized in Table I. Due to back-scattering, only phonons propagating along main crystal axes will be excited. As the direction of lattice displacements for each symmetry species is given, we are further able to distinguish LO and TO modes. ...
Prospects of Emerging Engineered oxide nanomaterials and their
... artificially engineered nanostructures of oxide materials as well as their potential applications. A fundamental understanding about the state-of-the-art of the synthesis for different size, shape and morphology have been discussed in details, which can be tuned according to the desired properties o ...
... artificially engineered nanostructures of oxide materials as well as their potential applications. A fundamental understanding about the state-of-the-art of the synthesis for different size, shape and morphology have been discussed in details, which can be tuned according to the desired properties o ...
Amorphous phosphates
... rich in phosphates) but can also represent a pathological situation. Usually, the presence of these crystals is non significant. The distinction between amorphous urates and amorphous phosphates is often made on the urinary pH basis. With a simple examination of the centrifuge pellet, the precipitat ...
... rich in phosphates) but can also represent a pathological situation. Usually, the presence of these crystals is non significant. The distinction between amorphous urates and amorphous phosphates is often made on the urinary pH basis. With a simple examination of the centrifuge pellet, the precipitat ...
Metal disordering Cu(II) supramolecular polymers constructed from
... good planarity, which is rare even for rigid BTC ligand. Water and pyridine molecules coordinate to metal atoms lying perpendicular to the layer. As a result, alternating U1-MCU2-MC layers (U1 and U2 represent the water and pyridine units, respectively) along the c axis are formed (Fig. 2b), more di ...
... good planarity, which is rare even for rigid BTC ligand. Water and pyridine molecules coordinate to metal atoms lying perpendicular to the layer. As a result, alternating U1-MCU2-MC layers (U1 and U2 represent the water and pyridine units, respectively) along the c axis are formed (Fig. 2b), more di ...
Crystal structure
In mineralogy and crystallography, a crystal structure is a unique arrangement of atoms, ions or molecules in a crystalline liquid or solid. It describes a highly ordered structure, occurring due to the intrinsic nature of its constituents to form symmetric patterns.The crystal lattice can be thought of as an array of 'small boxes' infinitely repeating in all three spatial directions. Such a unit cell is the smallest unit of volume that contains all of the structural and symmetry information to build-up the macroscopic structure of the lattice by translation.Patterns are located upon the points of a lattice, which is an array of points repeating periodically in three dimensions. The lengths of the edges of a unit cell and the angles between them are called the lattice parameters. The symmetry properties of the crystal are embodied in its space group.A crystal's structure and symmetry play a role in determining many of its physical properties, such as cleavage, electronic band structure, and optical transparency.