ISSN:
1662-9779
Quelle:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Thema:
Physik
Notizen:
Bismuth cuprate superconductor has a unique structure called a structural modulation(supercell, SC) consisting of modulated several unit cells. Strain induced by multilayered structureincreases the intensity of SC modulation, while an oxygen deficient sample shows expansion of SCsize. In this study, as opposed to the multilayer strain, by preparing samples with thick filmthicknesses the effect of strain on crystal structure was investigated including SC structure. Epitaxialgrowth was verified by x-ray diffraction, and the thicker film showed other epitaxial phase rotated 32°around the surface normal with respect to the initial epitaxial phase. The SC size estimated by x-rayreciprocal space mapping was double the size of the initial epitaxial phase. Interestingly, the initialepitaxial phase became a dominant structure after further deposition. In order to evaluate the differentSC size and SC modulation, a new index related with an incline of the modulation vector wasproposed
Materialart:
Digitale Medien
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/24/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.139.53.pdf
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