@article {298, title = {Site-selective oxygen-isotope substitution in YBa2Cu3O7-δ}, journal = {Physical Review B}, volume = {44}, year = {1991}, chapter = {9556}, abstract = {

We report selective substitution of oxygen-18 and oxygen-16 isotopes into the inequivalent oxygen lattice sites in YBa2Cu3O7-δ. The technique involves gas-phase diffusion and exploits the site dependence of diffusion rates. The CuO2-plane [O(2),O(3)] sites of YBa2Cu3O7-δ 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.

}, doi = {10.1103/PhysRevB.44.9556}, url = {https://journals.aps.org/prb/abstract/10.1103/PhysRevB.44.9556}, author = {Morris, D. E. and Markelz, A. G. and Wei, J. Y. T. and Huitgren, C. T. and Nickel, J. H. and Hamilton, J. C. and McCarty, K. F.} } @proceedings {321, title = {Conversion of 124 and 123 + cupric oxide: microstructure and phase diagram}, volume = {169}, year = {1990}, pages = {245-248}, author = {Morris, D. E. and Nickel, J. H. and Markelz, A.G. and Gronksy, R. and Fendorf, M. and Burmester, C. P.} } @article {280, title = {CONVERSION OF 124 INTO 123+CUO AND 124, 123 AND 247 PHASE REGIONS IN THE Y-BA-CU-O SYSTEM}, journal = {Physica C}, volume = {168}, number = {1-2}, year = {1990}, note = {Markelz, Andrea/0000-0003-0443-4319
76}, month = {Jun 1}, pages = {153-160}, isbn = {0921-4534}, doi = {10.1016/0921-4534(90)90118-X}, author = {Morris, D. E. and Markelz, A. G. and Fayn, B. and Nickel, J. H.} } @article {281, title = {8 NEW HIGH-TEMPERATURE SUPERCONDUCTORS WITH THE 1-2-4 STRUCTURE}, journal = {Physical Review B}, volume = {39}, number = {10}, year = {1989}, note = {Scheven, Ulrich/D-7582-2013
Markelz, Andrea/0000-0003-0443-4319; Scheven, Ulrich/0000-0001-8111-0081
B
241}, month = {Apr 1}, pages = {7347-7350}, isbn = {0163-1829}, doi = {10.1103/physrevb.39.7347 }, author = {Morris, D. E. and Nickel, J. H. and Wei, J. Y. T. and Asmar, N. G. and Scott, J. S. and Scheven, U. M. and Hultgren, C. T. and Markelz, A. G. and Post, J. E. and Heaney, P. J. and Veblen, D. R. and Hazen, R. M.} } @article {278, title = {OXYGEN CONCENTRATION EFFECT ON TC OF THE BI-CA-SR-CU-O SUPERCONDUCTOR}, journal = {Physical Review B}, volume = {39}, number = {10}, year = {1989}, note = {A
155}, month = {Apr 1}, pages = {6612-6614}, isbn = {0163-1829}, doi = {https://doi.org/10.1103/physrevb.39.6612 }, author = {Morris, D. E. and Hultgren, C. T. and Markelz, A. M. and Wei, J. Y. T. and Asmar, N. G. and Nickel, J. H.} } @article {279, title = {SMALL OXYGEN ISOTOPE SHIFT IN YBA2CU3O7}, journal = {Physical Review B}, volume = {37}, number = {10}, year = {1988}, note = {Markelz, Andrea/0000-0003-0443-4319
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74}, month = {Apr 1}, pages = {5936-5939}, isbn = {0163-1829}, doi = {10.1103/physrevb.37.5936}, author = {Morris, D. E. and Kuroda, R. M. and Markelz, A. G. and Nickel, J. H. and Wei, J. Y. T.} }