Superlattices of Y-Ba-Cu-O/Yy-Pr1-y-Ba-Cu-O grown by pulsed laser deposition
Abstract
Superlattices of YBa2Cu3O7-x/YyPr1-yBa2Cu3O7-x(y=0.8 and 0.0) have been successfully grown in situ on MgO and LaAlO3 by using a multitarget pulsed laser deposition system. Satellite peaks have been observed in x-ray diffraction for the superlattices with modulation wavelengths from about few tens of angstroms to few hundred angstroms. The x-ray diffraction measurements also indicate that the multilayers have c axis normal to the substrates. Good crystallinity has been observed in the superlattices with He ion backscattering minimum yields of about 10%, indicating highly oriented growth. The presence of a periodic layer structure was further confirmed by the observation of composition oscillations in these structures by secondary-ion mass spectrometry.
- Publication:
-
Applied Physics Letters
- Pub Date:
- January 1990
- DOI:
- 10.1063/1.103293
- Bibcode:
- 1990ApPhL..56..400W
- Keywords:
-
- Crystal Growth;
- High Temperature Superconductors;
- Mixed Oxides;
- Pulsed Lasers;
- Superlattices;
- Yttrium Oxides;
- Backscattering;
- Barium Oxides;
- Copper Oxides;
- Mass Spectroscopy;
- Praseodymium;
- X Ray Diffraction;
- Solid-State Physics