A nitride semiconductor crystal of a group 13 metal in the periodic table in which a principal surface is a non-polar surface or a semi-polar surface, and the maximum width of basal surface lamination defects on the principal surface is 800 μm or less, and the principal surface includes ...
According to this process, a high-quality Periodic Table Group 13 metal nitride bulk crystal can be produced under low pressure or atmospheric pressure.doi:US8133319 B2Yoji AritaYoshinori SekiTakeshi TaharaYuzuru SatoUS
wherein M represents a transition metal of the group V of the Periodic Table; R represents a cyclopentadienyl group, a substituted cyclopentadienyl group, an indenyl group, a substituted indenyl group, a fluorenyl group or a substituted fluorenyl group; O represents an oxygen atom; X represents...
Thealkali metalsare the six metallic elements in Group 1 of the periodic table, namely Li, Na, K, Rb, Cs, and Fr. The first five exist in nature, whereas Fr is only produced through nuclear reaction. The alkalimetal ionsgenerally have smaller atomic radii than the transition metal ions ...
KHANNA is right, he and his colleagues have found a portal to another periodic table of sorts, this one populated by metal cluster "superatoms" that mimic the atoms of the original table. Their latest superatom, an Al 7 -cluster, behaves like a single multivalent germanium atom ( Proc. ...
A metal from group IVb of the periodic table is used as the target in a reactive deposition process. An inert gas such as argon is admitted within the chamber housing the target. Electrical power at a constant level is supplied to the target, ionizing the inert gas so that the ions bomba...
英汉 网络释义 transition.metal n. 1. 过渡金属(位于元素周期表中心的一组金属元素,可形成有色化合物,常作为催化剂)one of the group of metals in the centre of the periodic table(= a list of all the chemical elements) which form coloured compounds and often act as catalysts(= substances that ...
Current research efforts on single-atom catalysts (SACs) exclusively focus on nonmetal or transition-metal atoms as active centers, while employing main-group metal elements is seemingly excluded because their delocalized s/p-bands are prone to yield a broadened resonance for the interaction with adso...
IKEA’s product lines range from your everyday table spoon and doorknobs to larger media furniture, sofas, and full furnished kitchens. With style and functionality at it’s forth front, IKEA needed a material that would both look aesthetically pleasing with their items and durable-stainless ...
15 - 30 mass% of TiCN, and 0 - 10 mass% of at least one kind of carbide, nitride or carbonitride of one or more non-W, non-Tiperiodic table Group 4, 5 or 6 metal; a WC phase (3); and a composite hard phase (2)... KINOSHITA,HIDEYOSHI,HANAKI,... 被引量: 0发表: 2013年...