Journal
APPLIED PHYSICS LETTERS
Volume 89, Issue 8, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2338564
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A multilayer thin film epitaxial passivation of single crystal MgO substrates was developed. YBa2Cu3O7-x films on the buffered MgO substrates demonstrate pure c-axis orientation, absence of in-plane disoriented grains, transition temperature T-c > 91 K, and critical current density J(c) similar to 5 MA/cm(2) at 77.4 K and were deposited in thicknesses of up to several micrometers without cracks. High-temperature superconductor multilayer flux transformers of 2 mu m thickness on the buffered MgO substrates demonstrated improved insulation between the superconducting layers and an increased dynamic range compared to flux transformers on SrTiO3 substrates. ((c))2006 American Institute of Physics.
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