1997
DOI: 10.1016/s0925-8388(96)02773-9
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Effects of in-plane high angle grain boundaries in YBa2Cu3O7 thin films epitaxially grown on (100) MgO on their physical properties

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Cited by 13 publications
(8 citation statements)
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“…7(c). Although a direct correlation of the real part of the AC-w to the R s is not reported so far, already there exists a strong correlation between the imaginary part of the AC-w signal (which is proportional to the low frequency loss) and the R s [23]. More detailed study which involves AC-w and R s may be helpful to confirm any correlation between AC-w and R s if it exists, and it would serve as a rapid, non-destructive and very useful tool to select samples with low R s value in view of applications.…”
Section: Dbco On As-grown Ceomentioning
confidence: 96%
“…7(c). Although a direct correlation of the real part of the AC-w to the R s is not reported so far, already there exists a strong correlation between the imaginary part of the AC-w signal (which is proportional to the low frequency loss) and the R s [23]. More detailed study which involves AC-w and R s may be helpful to confirm any correlation between AC-w and R s if it exists, and it would serve as a rapid, non-destructive and very useful tool to select samples with low R s value in view of applications.…”
Section: Dbco On As-grown Ceomentioning
confidence: 96%
“…[6][7][8] In experiment, MgO thin¯lms are of interest as substrate for various thin metal¯lms such as Ag/MgO, 9 Fe/MgO, 10 Co/MgO, 11 Nb/MgO 12 etc. Many ferroelectric and high-temperature superconducting thin¯lms such as LiNbO 3 , 13 BaTiO 3 14 and YBa 2 Cu 3 O 7 , [15][16][17] etc. have been fabricated using MgO as an intermediate layer.…”
Section: Introductionmentioning
confidence: 99%
“…MgO is one of the substrates that meets the above-mentioned requirements. Although the very low values of ε r (10) and tan δ (0.62 × 10 −5 ) at 77 K and 10 GHz [1] of single-crystal MgO make it a viable substrate for growing YBCO films, the formation of high-angle grain boundaries (HAGBs) [2,3] (i.e. the existence of two in-plane oriented YBCO grains, namely 0 • and 45 • grains due to a large lattice mismatch of ∼9% between YBCO and MgO) poses a serious problem in using MgO substrates to grow YBCO films for microwave devices due to the occurrence of huge loss at microwave frequency mainly in HAGBs.…”
Section: Introductionmentioning
confidence: 99%