Influence of the characteristics of a SrTiO3 buffer layer on the superconductivity of laser-ablated YBa2Cu3O7−ϖ films

Cheng, Hsiu‐Fung; Lin, Chiung–Wei; Lin, Hsin-Fu; Lo, Jyi-Tsong; Tseng, Tzu-Feng; Liu, K.-S.; Lin, I‐Nan

doi:10.1016/0921-4534(94)90839-7

Cited by 12 publications

(4 citation statements)

References 16 publications

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“…Though this material has previously been used as a buffer between YBCO and single-crystal MgO, [9][10][11] our initial attempts to use it with IBAD MgO were not promising. Though this material has previously been used as a buffer between YBCO and single-crystal MgO, [9][10][11] our initial attempts to use it with IBAD MgO were not promising.…”

Section: Introductionmentioning

confidence: 99%

Microstructure of SrTiO₃ buffer layers and itseffects on superconducting properties ofYBa₂Cu₃O_7-δ coated conductors

et al. 2004

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A thin layer of SrTiO 3 (STO) has successfully been used as a buffer layer to grow high-quality superconducting YBa 2 Cu 3 O 7-␦ (YBCO) thick films on polycrystalline metal substrates with a biaxially oriented MgO template produced by ion-beam-assisted deposition. Using this architecture, 1.5-m-thick YBCO films with an in-plane mosaic spread in the range of 2.5°to 3.5°in full width at half-maximum and critical current density over 2 × 10 6 A/cm 2 in self-field at 75 K have routinely been achieved. It is interesting to note that the pulsed laser deposition growth conditions of SrTiO 3 buffer layers, such as growth temperature and oxygen pressure, have strong effects on the superconducting properties of YBCO. Detailed studies using transmission electron microscopy, scanning electron microscopy, and atomic force microscopy were used to explore the microstructures of STO deposited at different conditions and to understand further their effects on the growth and properties of YBCO films.

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Section: Introductionmentioning

confidence: 99%

Microstructure of SrTiO₃ buffer layers and itseffects on superconducting properties ofYBa₂Cu₃O_7-δ coated conductors

et al. 2004

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“…It is noteworthy that the measured height is about the distance between TiO and SrO 2 atom-planes in a SrTiO 3 crystal. There have been some reports on surface morphology of STO films on MgO and STO substrates [3,28,29]. However, we note that this is the first time that such a terraced-island structure is reported in a sputtered SrTiO 3 film on MgO substrate.…”

Section: Nucleation and Growth Mechanisms Of Srtio 3 Andmentioning

confidence: 53%

AFM studies of surface morphologies of sputtered SrTiO 3 films and annealed MgO substrates

Meng¹,

Moerman²,

Sonnenberg³

et al. 1999

Applied Physics A: Materials Science & Processing

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Atomic force microscopy (AFM) is applied to study the surface morphologies and growth mechanisms of sputtered SrTiO 3 films on single-crystal MgO(100) substrates. Meanwhile, surface morphologies of as-polished and post-annealed MgO(100) substrates are investigated as well. Effects of the miscut (or misorientation) of the substrate surface on morphologies and growth mechanisms are discussed. For comparison, a typical surface morphology and growth mechanism of the spiral island structure in sputtered PrBa 2 Cu 3 O 7−δ films on MgO(100) substrates are presented.

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“…In order to overcome these problems, many authors have studied suitable buffer layers for the growth of HTS films on MgO substrates. The buffer materials dealt with in these studies are mainly SrTiO 3 [4][5][6][7][8][9][10] and a few other materials such as CeO 2 [11] and Sr 2 (AlTa)O 6 [12]. Little work on CeO 2 /YSZ double buffer layers on MgO has been reported in the literature except by Li et al [13], who fabricated biepitaxial grain boundary junctions on CeO 2 /YSZ buffered MgO substrates using a laser ablation technique.…”

Section: Introductionmentioning

confidence: 99%

Preparation of in-plane textured large-area YBCO films on (100) MgO with CeO₂/YSZ buffer layers

Kawagishi¹,

Komori²,

Fukutomi³

et al. 2000

Supercond. Sci. Technol.

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Epitaxial YBa 2 Cu 3 O y (YBCO) thin films with smooth surfaces have been successfully grown on large area (100) MgO (30 × 30 mm 2 ) substrates buffered by CeO 2 /YSZ (Y 2 O 3 -stabilized ZrO 2 ) double layers. The use of the double buffer layers and the employment of a new technique for controlling substrate temperature greatly enhance not only the YBCO film quality, but also the reproducibility of deposition. An excellent in-plane epitaxy was achieved with no evidence of misoriented grains in the YBCO/CeO 2 /YSZ/MgO structure. Good microwave properties were observed for YBCO films grown on buffered MgO compared with those on bare MgO.

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Influence of the characteristics of a SrTiO3 buffer layer on the superconductivity of laser-ablated YBa2Cu3O7−ϖ films

Cited by 12 publications

References 16 publications

Microstructure of SrTiO₃ buffer layers and itseffects on superconducting properties ofYBa₂Cu₃O_7-δ coated conductors

Microstructure of SrTiO₃ buffer layers and itseffects on superconducting properties ofYBa₂Cu₃O_7-δ coated conductors

AFM studies of surface morphologies of sputtered SrTiO 3 films and annealed MgO substrates

Preparation of in-plane textured large-area YBCO films on (100) MgO with CeO₂/YSZ buffer layers

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Influence of the characteristics of a SrTiO3 buffer layer on the superconductivity of laser-ablated YBa2Cu3O7−ϖ films

Cited by 12 publications

References 16 publications

Microstructure of SrTiO3 buffer layers and itseffects on superconducting properties ofYBa2Cu3O7-δ coated conductors

Microstructure of SrTiO3 buffer layers and itseffects on superconducting properties ofYBa2Cu3O7-δ coated conductors

AFM studies of surface morphologies of sputtered SrTiO 3 films and annealed MgO substrates

Preparation of in-plane textured large-area YBCO films on (100) MgO with CeO2/YSZ buffer layers

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Microstructure of SrTiO₃ buffer layers and itseffects on superconducting properties ofYBa₂Cu₃O_7-δ coated conductors

Microstructure of SrTiO₃ buffer layers and itseffects on superconducting properties ofYBa₂Cu₃O_7-δ coated conductors

Preparation of in-plane textured large-area YBCO films on (100) MgO with CeO₂/YSZ buffer layers