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Local structure of ni in Y Ba2(Cu.967Ni.033)3O7-δ determined by XAFS

✍ Scribed by J.B. Boyce; F. Bridges; T. Claeson; T.H. Geballe; J.M. Tarascon

Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
282 KB
Volume
165-166
Category
Article
ISSN
0921-4526

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✦ Synopsis

X-ray absorption fine structure (XAFS) measurements of low concentration Ni substituted YBCO indicate that Ni substitutes nearly uniformly on both Cu sites. The Ni(l) site is essentially undistorted while the Ni(2) site is slightly distorted with longer Ni-Y and shorter Ni(2)-Ba bond lengths.

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Effect of the substitution of Fe, Co, Ni
Effect of the substitution of Fe, Co, Ni for Cu in YBa2Cu3O7−δ studied by anelastic relaxation measurements
✍ Liu Wei; T.S.Kê (Ge Tingsui) 📂 Article 📅 1992 🏛 Elsevier Science 🌐 English ⚖ 289 KB

Measurements of elastic energy dissipation have been made on specimens with substitution of Fe, Co, Ni for Cu in YBazCu307\_6. The effect of substitution on the double internal-friction peaks around Tc was found to be different for substitution of Fe, Co on the Cu ( 1 ) site along the Cu-O chain and