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Raman spectroscopy of (Pb(1+x)/2Cu(1-x)/2)Sr2(Y1-xCax)Cu2O7+δ(x=0, 0.35)

✍ Scribed by M.V. Abrashev; M.N. Iliev; L.N. Bozukov

Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
413 KB
Volume
200
Category
Article
ISSN
0921-4534

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Using a vibrating reed technique, internal friction (Q -1 ) and Young's-modulus sound velocity (VE) were measured for polycrystalline samples of two types of superconducting Pbo.75Cuo.2s(Sro.9Cao.l )2(Yo.5Cao.5)Cu207+6 (Tc= 58 and 48 K) and insulating Pbo.sCuo.sSr2YCu207 in the temperature range bet