On the deuterium quadrupole coupling constant of H-doped Y---Ba---Cu---O systems期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

On the deuterium quadrupole coupling constant of H-doped Y---Ba---Cu---O systems

Authors:	S. D. Goren C. Korn E. R ssler H. M. Vieth K. Lü ders Z. Gavra J. R. Johnson J. J. Reilly

Affiliation:	^a Department of Physics, Ben Gurion University, POB 653, Beer Sheva, Israel ^b Fachbereich Physik, Freie Universität Berlin, Berlin, Germany ^c Nuclear Research Centre Negev, POB 9001, Beer Sheva, Israel ^d Brookhaven National Laboratory, Upton, NY 11973, USA

Abstract:	The ²H quadrupole coupling constant e²qQ/h and asymmetry parameter η were measured for deuterium-doped Y₂BaCuO₅ (green phase) where x=0.31 and 0.61 in H_xY₂BaCuO₅ and at temperatures of 180, 300 and 360 K. The values are e²qQ/h = 235 ± 20 kHz and η = 0.05 ± 0.05, independent of x and the temperature. These results, together with previously measured quadrupole coupling constants of other hydrogen-doped Y---Ba---Cu---O compounds, are correlated with IR stretching frequencies of these compounds and support the model that the hydrogen forms an O---H bond.

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