Direct Observation of Optical Band Gap Components in Ga[subscript 1?x]Zn[subscript x]N[subscript 1?x
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Ward, Matthew↗
Engineering topics
Han, Wei-Qiang
Publications and source records attributed to Han, Wei-Qiang.
A New Intermetallic NiSn 5 Phase: Induced Synthesis, Crystal Structure Resolution, and Investigation of Its Mechanism
Benefiting from the nanoscale effect, some metastable compounds can be synthesized in nanoparticles under normal conditions. The new intermetallic NiSn 5 phase is synthesized by us for the first time by using a seed crystal induction method. This tetragonal phase in the P 4 /$mcc$ space group has stoichiometric Ni atom defects, yielding Ni0.62Sn 5 . A study of the growth mechanism reveals that the FeSn 5 /CoSn 5 seed crystal plays a vital role in the formation of the NiSn 5 phase. An investigation of the phase evolution during lithiation/delithiation processes indicates the irreversibility of NiSn 5 as an anode for lithium ion batteries.
36 MATERIALS SCIENCE↗