cubic表晶体属立方晶系, Fm-3m为空间群符号, 表明其晶体为立方晶系, 点阵形式为立方面心, 点群为Oh, 在其3个位方向上(a,a+b+c, a+b)上的对称元素分别为 4/m -3 2/m.常见晶体中NaCl, Cu Ag Au CaF2都属该空间群.
Cover: 3D cubic Fm3m mesoporous aluminosilicates (AlKIT-5) with very high structural order and unprecedented loadings of Al in the silica framework are reported by Ajayan Vinu and co-workers on p. 640. The specific surface area, specific pore volume, and pore diameter of AlKIT-5 can be ...
Is there theoretical evidence for a metallic carbon polymorph with space group symmetry Fm3m at ambient conditions? Diam. Relat. Mater. 10, 2225–2227 (2001). Article CAS Google Scholar Murrieta, G., Tapia, A. & deCoss, R. Structural stability of carbon in the face-centred-cubic (Fm3m...
The phonon dispersion of cubic GeTe is similar to that of IV–VI family, such as PbTe29, SnTe30, and SnSe31, which share the same space group of Fm3m. The phonon lifetimes of the acoustic and optical phonon modes of cubic GeTe at 693 K, extracted by IXS and calculated using both...
A detailed study of the effects of temperature and hydrostatic pressure on the ionic conductivity of PbF2 in both the cubic (Fm3m-Oh5) and orthorhombic (Pmnb-V2h16) phases was performed with some emphasis on the changes in conductivity accompanying the transition between the two phases. Both...
which are assigned to the simplecubic space groupPm3n (8 micelles)[61], the face centred Fm3m space group (4 micelles)[43], and the body-centred Im3m space group[43]. Concerning the reverse I2type (type II), only a structure containing 24micellesand assigned to the Fd3m space group...
中文: X射线的实验结果表明:样品均形成了在a-b方向上具有双倍周期的钙钛矿结构,属于立方晶系,晶体空间群为Fm3m(No225). Sr2YRuO6原胞为立方结构(a=0.8164nm),Y离子和Ru离子分别有序占据4a(0,0,0)和4b(1/2,1/2,1/2)原子等效位置.英文: Usually, cubic splines are expressed by four polynomial ...
The archetype of oxides with ionic bonds, MgO crystallizes in an NaCl-like structure (space group Fm3m). Which type of crystal is a cubic crystal? In crystallography, the cubic (or isometric) crystal system is a crystal system where the unit cell is in the shape of a cube. This is ...
The protocol also enables the production of well-ordered pores, particularly with 3D-cubic symmetries Fm3m and Im3m, and some hexagonal, as well as to... RM Silveira,ERD Almeida,CA Ospina,... 被引量: 0发表: 2021年 加载更多来源期刊 Studies in Surface Science & Catalysis 2005 研究点推荐...
中文: X射线的实验结果表明:样品均形成了在a-b方向上具有双倍周期的钙钛矿结构,属于立方晶系,晶体空间群为Fm3m(No225). Sr2YRuO6原胞为立方结构(a=0.8164nm),Y离子和Ru离子分别有序占据4a(0,0,0)和4b(1/2,1/2,1/2)原子等效位置.英文: Usually, cubic splines are expressed by four polynomial ...