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Modulated structure in YSr2Cu2.5B0.5Oy oxide

โœ Scribed by J.Q Li; H Chen; Z.X Zhao

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
649 KB
Volume
233
Category
Article
ISSN
0921-4534

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โœฆ Synopsis

The modulated structure in YSr2Cu2.sBo.5Oy is characterized by electron diffraction and high resolution electron microscopy.

A structural model is postulated for the modulation, in which the periodic changes are considered due to the ordered arrangement of B and Cu atoms in the 123 structure. Computer calculated images for this model are compared with high resolution electron micrographs. Upon in situ heating, the structural modulation disappears at a temperature of around 760 K. Substitution of Ba for Sr in YSr2Cu2.sBo.5Oy is found to induce superconductivity and affect the structural modulation.

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