Comparison of Ba/sub 2/YCu/sub 3/O/sub 7- delta / films on NdGaO/sub 3/ and LaAlO

Phillips, Julia M.; Siegal, Michael P.; Perry, Catherine L.; Marshall, J. H.

doi:10.1109/20.133963

Cited by 13 publications

(2 citation statements)

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“…3 Finally, the dielectric properties of the substrate are a major concern in high frequency applications. For the well-known Ba 2 YCu 3 0 7 _« (BYCO) system, perovskite crystals are preferred as substrates since they are of the same crystal structure and can exhibit good lattice match.…”

Section: Introductionmentioning

confidence: 99%

“…1 ' 2 Furthermore, the increased likelihood of chemical reactions and interdiffusion between the substrate and BYCO film at high temperature may pose severe problems. 3 Lanthanum aluminate has a distorted perovskite structure with angles between the perovskite unit cell edges slightly larger than 90° at room temperature. This was attributed to the reaction/interdiffusion which occurs at high temperatures.…”

Section: Introductionmentioning

confidence: 99%

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Synchrotron x-ray topography studies of twin structures in lanthanum aluminate single crystals

et al. 1992

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An extensive investigation of twin structures in lanthanum aluminate single crystals at room temperature has been undertaken using White Beam Synchrotron X-Ray Topography (WBSXRT). Twin configurations, directly observable via orientation contrast, were found to comprise both large-volume, macroscopic twins and thick twin lamellae. Positional shifts of twin domain images with respect to matrix images, arising from the mutual misorientation of diffraction vectors, were measured on x-ray topographic images recorded from the (220) rhom planes approximately parallel to the specimen surface and compared to calculated values in order to solve the twin laws in this system. The dominant twin operations were found to be (101) rhom , (011) r hom, and (112) rhom mirror reflections. The potential influence of the twins on the growth of epitaxial B thin films is discussed.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%