%0 Journal Article %J Physical Review B %D 1991 %T Site-selective oxygen-isotope substitution in YBa2Cu3O7−δ %A Morris, D. E. %A Markelz, A. G. %A Wei, J. Y. T. %A Huitgren, C. T. %A Nickel, J. H. %A Hamilton, J. C. %A McCarty, K. F. %X

We report selective substitution of oxygen-18 and oxygen-16 isotopes into the inequivalent oxygen lattice sites in YBa2Cu3O7δ. The technique involves gas-phase diffusion and exploits the site dependence of diffusion rates. The CuO2-plane [O(2),O(3)] sites of YBa2Cu3O7δ can be filled with 18O while the apical [O(4)] and CuO-chain sites [O(1)] contain 16O (the opposite distribution can also be made). The site-selective isotope occupation has been confirmed by Raman spectroscopy. Our method will permit experiments to determine the contributions of the different oxygen sites to the isotope effect, in order to locate the pairing interaction within the unit cell.

%B Physical Review B %V 44 %G eng %U https://journals.aps.org/prb/abstract/10.1103/PhysRevB.44.9556 %& 9556 %R 10.1103/PhysRevB.44.9556 %0 Conference Proceedings %B Materials Research Society Symposium Proceedings %D 1990 %T Conversion of 124 and 123 + cupric oxide: microstructure and phase diagram %A Morris, D. E. %A Nickel, J. H. %A Markelz, A.G. %A Gronksy, R. %A Fendorf, M. %A Burmester, C. P. %B Materials Research Society Symposium Proceedings %V 169 %P 245-248 %G eng %0 Journal Article %J Physica C %D 1990 %T CONVERSION OF 124 INTO 123+CUO AND 124, 123 AND 247 PHASE REGIONS IN THE Y-BA-CU-O SYSTEM %A Morris, D. E. %A Markelz, A. G. %A Fayn, B. %A Nickel, J. H. %B Physica C %V 168 %P 153-160 %8 Jun 1 %@ 0921-4534 %G eng %M WOS:A1990DL38100022 %R 10.1016/0921-4534(90)90118-X %0 Journal Article %J Physical Review B %D 1989 %T 8 NEW HIGH-TEMPERATURE SUPERCONDUCTORS WITH THE 1-2-4 STRUCTURE %A Morris, D. E. %A Nickel, J. H. %A Wei, J. Y. T. %A Asmar, N. G. %A Scott, J. S. %A Scheven, U. M. %A Hultgren, C. T. %A Markelz, A. G. %A Post, J. E. %A Heaney, P. J. %A Veblen, D. R. %A Hazen, R. M. %B Physical Review B %V 39 %P 7347-7350 %8 Apr 1 %@ 0163-1829 %G eng %M WOS:A1989T985500074 %R 10.1103/physrevb.39.7347 %0 Journal Article %J Physical Review B %D 1989 %T OXYGEN CONCENTRATION EFFECT ON TC OF THE BI-CA-SR-CU-O SUPERCONDUCTOR %A Morris, D. E. %A Hultgren, C. T. %A Markelz, A. M. %A Wei, J. Y. T. %A Asmar, N. G. %A Nickel, J. H. %B Physical Review B %V 39 %P 6612-6614 %8 Apr 1 %@ 0163-1829 %G eng %M WOS:A1989T985400040 %R https://doi.org/10.1103/physrevb.39.6612 %0 Journal Article %J Physical Review B %D 1988 %T SMALL OXYGEN ISOTOPE SHIFT IN YBA2CU3O7 %A Morris, D. E. %A Kuroda, R. M. %A Markelz, A. G. %A Nickel, J. H. %A Wei, J. Y. T. %B Physical Review B %V 37 %P 5936-5939 %8 Apr 1 %@ 0163-1829 %G eng %M WOS:A1988M824000089 %R 10.1103/physrevb.37.5936 %0 Journal Article %J Physical Review B %D 1988 %T SPECIFIC-HEAT MEASUREMENTS ON SUPERCONDUCTING BI-CA-SR-CU AND TL-CA-BA-CU OXIDES - ABSENCE OF A LINEAR TERM IN THE SPECIFIC-HEAT OF BI-CA-SR-CU OXIDES %A Fisher, R. A. %A Kim, S. %A Lacy, S. E. %A Phillips, N. E. %A Morris, D. E. %A Markelz, A. G. %A Wei, J. Y. T. %A Ginley, D. S. %B Physical Review B %V 38 %P 11942-11945 %8 Dec 1 %@ 0163-1829 %G eng %M WOS:A1988R274300075 %R 10.1103/PhysRevB.38.11942