Defect structure in neutron-irradiated β−6LiAl and β−7LiAl: Ele

Abstract

The neutron-irradiation effects on the electrical resistivities of p-LiA1 and p-LiA1 with 48 -54 at. % Li at room temperature are presented. A remarkable decrease of the electrical resistivity is observed in

Diffusion of ⁸Li Short-Lived Radiotracer in Li Ionic Conductors of NaTl-Type Intermetallic Compounds

“…V Li is the dominant defect for the Li-deficient region, Li Ga is the dominant defect for the Li-rich one. The coexistence V Li of Li Ga is expected to form V Li -Li Ga complex defects [10] as reported for the defect structure of -LiAl [9], which would play an important role in reducing the strain energy caused by the point defects in the real cystal. Especially, almost the same amounts of V Li and Li Ga exist around the content of 51 at.% Li.…”

“…Therefore, the concentration of the radiation-induced defects like a frenkel pair is several order of magnitude smaller than that of the native defects and the effects of the radiation-induced defects are negligibly small [10].…”

“…Reflection and transmission Laue X-ray analysis showed that the crystal was polycrystal. The content of lithium was determined by the electrical resistivity measurements [9,10]. The surface of the sample was polished to the roughness less than 1 µm before the experiments.…”

Diffusion Experiment in Lithium Ionic Conductors with the Radiotracer of 8Li

“…The composition of Li was determined by the electrical resistivity measurements, relying on the systematic correlation between them (Kuriyama et al, 1996) as shown in Fig. 7 (Kuriyama et al, 1996) as reported for the defect structure of β-LiAl (Sugai et al, 1995), which would play an important role in reducing the strain energy caused by the point www.intechopen.com defects in the lattice matrix. Especially, almost the same amounts of V Li and Li Ga exist for the composition of about 51 at.…”

“…% Li for LiIn). In order to understand the motion of Li in the β phase as an ionic conductor, the defect structure in the Li compounds, closely related to the fast ionic motion, has been intensively studied via the measurement of electrical resistivity and density with help of the standard x-ray diffraction analysis (Sugai et al, 1995;Kuriyama et al, 1996). There exist three kinds of defects (see Fig.…”