There is an incredibly large variety of crystal structures of the elements as a function of temperature and/or pressure. While with increasing temperature the atomic pair potentials are probed, under pressure the potentials are changed as well as the electronic structure. This cannot only lead to ...
3.an arrangement in space of isolated points in a regular pattern, showing the positions of atoms, molecules, or ions in the structure of a crystal. 4.a partially ordered set in which every subset containing exactly two elements has a greatest lower bound or intersection and a least upper ...
The crystal structure has been determined and the Co Co distance found to be 2.327(2) . This structure completes the information on M M distanc... WIB Jr,DM Collins,FA Cotton,... - 《Journal of Organometallic Chemistry》 被引量: 59发表: 1979年 Multiple bonds between main group elements ...
properties.It is specially suited for the strict cases, such as the carrier for the purification of vehicle exhaust emission and LSC's substrate.Up to now,cordierite has been doped with other elements to decrease the linear thermal expansion coefficient and anisotropy thermal expansion of cordierite...
Structure Crystals can be grown under moderate conditions from all 92 naturally occurringelementsexcept helium, and helium can be crystallized at low temperatures by using 25 atmospheres of pressure.Binarycrystals are composed of two elements. There are thousands of binary crystals; some examples are ...
The structure was ... William R. Cullen, , Steven J. Rettig, and , Tu Cai Zheng - 《Canadian Journal of Chemistry》 被引量: 9发表: 1992年 Diene and dienyl complexes of transition elements: VI. The protonation of two isomeric (η5-cyclopentadienyl)-(η4-1,7-diphenylheptatrien-1-one)...
11.5 Crystal Structure A crystal is a material that has a periodic array of molecules or ions. When the periodic array extends throughout the entire crystal it is called a single crystal. Some materials are made of tightly bound small crystals and are referred to as polycrystalline materials. ...
Synthesis and crystal structure of M11X10 compounds, M = Sr, Ba and X = Bi, Sb. Electronic requirements and chemical bonding The intermetallic compounds Sr11Bi10, Ba11Bi10, and (Sr5Ba6)Sb-10) have been obtained from melts of mixtures of the elements. They crystallize in the tetragonal ...
是体心立方晶体，除了8个角原子外，一个原子在其立方中心上。在体心立方晶格中，每个原子具有8个相近原子。body-centeredcubic（体心立方）(bcc)崇德尚学求实创新 Chapter1SemiconductorsPhysics CrystalStructure Crystalsexhibitingbcclatticesincludethoseofsodium（钨）andtungsten（钠）.呈bcc晶格的晶体包括钨和钠晶体。
elements from the fourth column of the periodic table (germanium, tin, and lead)combinewith the chalcogenides from the sixth row to form good binary semiconductors such asgermanium telluride (GeTe) ortin sulfide (SnS). They have the sodium chloride structure, where each atom has six neighbours....