Site-selective oxygen isotope effect in
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D. Zech; H. Keller; K.A. MΓΌller; K. Conder; E. Kaldis
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Article
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1994
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Elsevier Science
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English
β 231 KB
New measurements of the oxygen (x60 vs. 'sO) isotope effect (OIS) in optimally doped YBa2CuaO~ (z = 6.95) are presented. A new two-step exchange process allowed the simultaneous preparation of fully isotope exchanged YBa2GusO~ samples and site-selective substituted samples. This allows a direct comp