Scientists are excited about diamonds—not the types that adorn jewelry, but the microscopic variety that are less than the width of a human hair. These so-called "nanodiamonds" are made up almost entirely of carbon. But ...
Nanomaterials
May 03, 2019
2
270
People are not the only ones to be occasionally frustrated. Some crystals also show frustrations. They do so whenever their elementary magnets, the magnetic spins, cannot align properly. Cesium copper chloride (Cs2CuCl4) ...
Condensed Matter
Apr 25, 2019
0
141
Scientists from Skoltech, IPCP RAS, MSU and UFU have considered the application of emerging photovoltaics in spacecrafts and satellites and explored the radiation stability of perovskite solar cells with respect to gamma ...
Materials Science
Mar 21, 2019
0
26
Physicists have discovered a new effect, which makes it possible to create excellent thermal insulators which conduct electricity. Such materials can be used to convert waste heat into electrical energy.
General Physics
Feb 21, 2019
0
456
Using a new computational method, an international collaboration has succeeded for the first time in systematically investigating magnetic quantum effects in the well-known 3-D pyrochlore Heisenberg model. The surprising ...
Quantum Physics
Jan 23, 2019
0
342
The absorption of light in semiconductor crystals without inversion symmetry can generate electric currents. Researchers at the Max Born Institute have now generated directed currents at terahertz (THz) frequencies, much ...
General Physics
Jan 14, 2019
0
36
A team of Immanuel Kant Baltic Federal University (BFU) together with an international scientific group has studied a correlation between the structure of ceramic materials based on bismuth ferrite (BiFeO3) and their magnetic ...
General Physics
Dec 18, 2018
0
6
There is often a pronounced symmetry when you look at the lattice of crystals: It doesn't matter where you look—the atoms are uniformly arranged in every direction. This behavior would also be expected of a crystal, which ...
General Physics
Dec 10, 2018
0
10
The pattern of arrangement of atoms in a crystal, called the crystal lattice, can have a huge effect on the properties of solid materials. Controlling and harnessing these properties is a challenge that promises rewards in ...
Condensed Matter
Dec 04, 2018
0
18
One-fifth of global electricity consumption is based on lighting; efficient and stable white-light emission with single materials is ideal for applications. Photon emission that covers the entire visible spectrum is, however, ...
In mineralogy and crystallography, a crystal structure is a unique arrangement of atoms in a crystal. A crystal structure is composed of a motif, a set of atoms arranged in a particular way, and a lattice. Motifs are located upon the points of a lattice, which is an array of points repeating periodically in three dimensions. The points can be thought of as forming identical tiny boxes, called unit cells, that fill the space of the lattice. 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 properties, such as cleavage, electronic band structure, and optical properties.
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