Raman study of compositionally induced phase transitions in Nd1+xBa2-xCu3Oz solid solutions

V. V. Petrykin, E. A. Goodilin, M. Kakihana, Yu D. Tretyakov

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    6 Citations (Scopus)

    Abstract

    In the present research we studied single phase Nd123ss within a wide range of compositions x=0...0.9 by Raman spectroscopy. For such solid solutions we observed the increase of the area of Raman-active apical oxygen mode for x=0...0.5, and its decrease for higher Nd content, which can be explained by existence of non-random distribution of Nd in Ba(Nd)O layers for x>0.6 resulting in formation of orthorhombic structure of 213. Nevertheless observed Raman, IR-spectra and high oxygen content of Nd-213 (z=7.30) are inconsistent with structural model proposed before. It was found that single phase NdBa2Cu3O7 prepared at low oxygen partial pressure decomposes into BaCuO2 and Nd123ss after subsequent annealing in oxygen at temperature higher than 700°C.

    Original languageEnglish
    Pages (from-to)1285-1288
    Number of pages4
    JournalKey Engineering Materials
    Issue number136 PART 2
    Publication statusPublished - 1997 Jan 1

    Keywords

    • NdBaCuO solid solutions
    • Polymerized complex method
    • Raman scattering

    ASJC Scopus subject areas

    • Materials Science(all)
    • Mechanics of Materials
    • Mechanical Engineering

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