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Band Gap Closing in La2-xSrxNiO4+δ

✍ Scribed by X. Granados; J. Fontcuberta; M. Vallet-Regı́; M.J. Sayagué; J.M. Gonzá-Calbet

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
404 KB
Volume
102
Category
Article
ISSN
0022-4596

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Evolution of the Structure of the K2NiF4 Phases La2−xSrxNiO4+δ with Oxidation State: Octahedral Distortion and Phase Separation (0.2≤x≤1.0)
✍ J.E. Millburn; M.A. Green; D.A. Neumann; M.J. Rosseinsky 📂 Article 📅 1999 🏛 Elsevier Science 🌐 English ⚖ 398 KB

The structural properties of the La 2؊x Sr x NiO 4؉ solid solution have been investigated by high resolution powder neutron di4raction as a function of Sr dopant concentration. There is a signi5cant change in the evolution of the shape of the NiO 6 octahedron beyond x ‫؍‬ 0.6, where previous transpo