<P>This study examined the epitaxial growth of YBa<SUB>2</SUB>Cu<SUB>3</SUB>O<SUB>7-x</SUB> (YBCO) films on (00l) LaAlO<SUB>3</SUB> substrates prepared by metal organic deposition (MOD) using a tri...
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https://www.riss.kr/link?id=A107533720
2007
-
SCI,SCIE,SCOPUS
학술저널
3298-3301(4쪽)
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
<P>This study examined the epitaxial growth of YBa<SUB>2</SUB>Cu<SUB>3</SUB>O<SUB>7-x</SUB> (YBCO) films on (00l) LaAlO<SUB>3</SUB> substrates prepared by metal organic deposition (MOD) using a tri...
<P>This study examined the epitaxial growth of YBa<SUB>2</SUB>Cu<SUB>3</SUB>O<SUB>7-x</SUB> (YBCO) films on (00l) LaAlO<SUB>3</SUB> substrates prepared by metal organic deposition (MOD) using a trifluoroacetate (TFA) solution. The effects of humidity (0-20% of P<SUB>H2O</SUB>) and film thickness (0.4-2.1 mum) on the phase formation, texture, and microstructures of the YBCO films were examined by X-ray diffraction, pole-figure, and scanning electron microscopy (SEM). The microstructure and resultant critical properties varied remarkably with humidity. With increasing humidity, the amount of the second phase (BaF<SUB>2</SUB>) decreased, the degree of texture was enhanced, and consequently the critical current (I<SUB>C</SUB>) and temperature (T<SUB>C</SUB> ) were improved. In the case of multi-coated films, the I<SUB>C</SUB> value increased from 35 to 152 A/cm-width with an increasing number of coatings from one to three, while the corresponding critical current density (J<SUB>C</SUB>) was in the range of 0.9-1.5 MA/cm<SUP>2</SUP> . Both the I<SUB>C</SUB> and J<SUB>C</SUB> decreased when an additional coating was applied due to microstructural degradation.</P>
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