Distribution of Inductive&amp;lt;tex&amp;gt;$J_c$&amp;lt;/tex&amp;gt;in Two-Dimensional Large-Size YBCO Films Prepared by Fluorine-Free MOD on&amp;lt;tex&amp;gt;$rm CeO_2$&amp;lt;/tex&amp;gt;-Buffered Sapphire

Manabe, Takaaki; Sohma, M.; Yamaguchi, Iwao; Kondo, W.; Tsukada, K.; Kamiya, Kunio; Mizuta, S.; Kumagai, Toru

doi:10.1109/tasc.2005.848635

Cited by 15 publications

(7 citation statements)

References 12 publications

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“…Co-evaporated film #4 was purchased from THEVA Ltd [14]. published elsewhere [12][13][14]. Figure 1(a) shows the x-ray diffraction (XRD) patterns for the four sample films.…”

Section: Methodsmentioning

confidence: 99%

Strong flux pinning due to dislocations associated with stacking faults in Y Ba₂Cu₃O_{7 − δ}thin films prepared by fluorine-free metal organic deposition

Yamasaki

Ohki²,

Yamaguchi

et al. 2010

Supercond. Sci. Technol.

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The magnetic-field angle dependence of the critical current density J c (H, θ) was measured in YBa 2 Cu 3 O 7−δ (YBCO) thin films with strong flux pinning (J c 2.5 MA cm −2 at 77.3 K) prepared by a fluorine-free (FF) metal organic deposition (MOD) method and by thermal co-evaporation. Steep J c (θ ) peaks around H ab were observed in FF-MOD films, and anisotropic scaling analysis showed that the pinning is mainly due to small random (point) pins and ab-plane-correlated pins. Few small precipitates with diameter less than 10 nm were observed by transmission electron microscopy (TEM); instead, a high density of stacking faults parallel to the ab-plane was observed in some areas in cross-sectional TEM images. We hypothesize that at 77 K most stacking faults are weak planar pinning centers by themselves and that (partial) dislocations formed at the boundary between stacking faults and the YBCO matrix become strong linear pinning centers parallel to the ab-plane. The linear pin acts as an ab-plane-correlated pin when it is perpendicular to the current direction, and acts as a small random pin in other cases, which well explains the observed J c (H, θ) of FF-MOD YBCO films.

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“…Co-evaporated film #4 was purchased from THEVA Ltd [14]. published elsewhere [12][13][14]. Figure 1(a) shows the x-ray diffraction (XRD) patterns for the four sample films.…”

Section: Methodsmentioning

confidence: 99%

Strong flux pinning due to dislocations associated with stacking faults in Y Ba₂Cu₃O_{7 − δ}thin films prepared by fluorine-free metal organic deposition

Yamasaki

Ohki²,

Yamaguchi

et al. 2010

Supercond. Sci. Technol.

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“…In particular, fluorinefree MOD (FF-MOD) has been developed as a promising method because homogeneously textured REBCO crystals form directly through simple reactions. [2][3][4][5][6][7][8][9][10][11][12][13] For practical application, it is necessary to prepare textured REBCO films on buffered metallic substrates with a large length. In this case, a low sintering temperature and a short sintering time are preferable to prevent undesirable phenomena, namely, reactions between REBCO crystals and the surface of buffer layers, generation of cracks owing to different thermal expansion coefficients, and atomic diffusion among the buffer and REBCO layers.…”

mentioning

confidence: 99%

Dramatic effects of chlorine addition on expanding synthesis conditions for fluorine-free metal–organic decomposition YBa₂Cu₃O_y films

Motoki

Ikeda

Honda

et al. 2017

Appl. Phys. Express

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The synthesis conditions of fluorine-free metal–organic decomposition (FF-MOD)-processed YBa2Cu3O y (YBCO) films on buffered metallic substrates have been systematically investigated. Chlorine addition to the starting solution was found to be quite effective for expanding the synthesis conditions of highly c-axis-oriented YBCO films. YBCO films showing a high critical current, ∼100 A/cm (77 K, ∼0 T), were successfully obtained by sintering at 740 °C, which is ∼50 °C lower than the typical sintering temperature for FF-MOD-processed YBCO films. This strongly indicated that chlorine addition is promising for the development of long and homogeneous YBCO tapes even by sintering at a low temperature of ∼740 °C.

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“…The goal value of the project in chapter 2 was achieved (II-3). [31]- [33] 6 Later development Up to the previous chapter, we described the development of the synthesis technology of the large-area superconducting film by the MOD method. In this chapter, we shall discuss the later development: (1) the result of manufacturing the fault current limiting element using the superconducting film developed in this research, in a joint research with external institutions (companies, universities, and the Central Research Institute of Electric Power Industry) and a research group within AIST (jointly with Energy Technology Research Institute), and then creating a prototype FCL by a series-parallel arrangement and conducting the current limiting test; and (2) the application to microwave devices and wire rods.…”

Section: Achievement Of Large-area Superconducting/ Buffer/sapphire Mmentioning

confidence: 99%

Preparation of superconducting films by metal organic deposition

Manabe¹,

Sohma²,

Yamaguchi³

et al. 2015

Synthesiology English edition

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high-volume interconnection of distributed power supply sites using low-cost superconducting film. 1.2 Metal organic deposition (MOD) method The authors had been engaging in the development of ceramic thin film manufacturing process by the metal organic deposition (MOD) method before the discovery of hightemperature superconductors. MOD is a method of "coating and firing" where the metal organic compound containing the constituent elements are dissolved in an organic solvent, this solution is coated onto a substrate, and heat treatment is done to burn off the organic components to form the metal oxide film (Fig. 3). [3][4]

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Distribution of Inductive<tex>$J_c$</tex>in Two-Dimensional Large-Size YBCO Films Prepared by Fluorine-Free MOD on<tex>$rm CeO_2$</tex>-Buffered Sapphire

Cited by 15 publications

References 12 publications

Strong flux pinning due to dislocations associated with stacking faults in Y Ba₂Cu₃O_{7 − δ}thin films prepared by fluorine-free metal organic deposition

Strong flux pinning due to dislocations associated with stacking faults in Y Ba₂Cu₃O_{7 − δ}thin films prepared by fluorine-free metal organic deposition

Dramatic effects of chlorine addition on expanding synthesis conditions for fluorine-free metal–organic decomposition YBa₂Cu₃O_y films

Preparation of superconducting films by metal organic deposition

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Distribution of Inductive&lt;tex&gt;$J_c$&lt;/tex&gt;in Two-Dimensional Large-Size YBCO Films Prepared by Fluorine-Free MOD on&lt;tex&gt;$rm CeO_2$&lt;/tex&gt;-Buffered Sapphire

Cited by 15 publications

References 12 publications

Strong flux pinning due to dislocations associated with stacking faults in Y Ba2Cu3O7 − δthin films prepared by fluorine-free metal organic deposition

Strong flux pinning due to dislocations associated with stacking faults in Y Ba2Cu3O7 − δthin films prepared by fluorine-free metal organic deposition

Dramatic effects of chlorine addition on expanding synthesis conditions for fluorine-free metal–organic decomposition YBa2Cu3Oy films

Preparation of superconducting films by metal organic deposition

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Distribution of Inductive<tex>$J_c$</tex>in Two-Dimensional Large-Size YBCO Films Prepared by Fluorine-Free MOD on<tex>$rm CeO_2$</tex>-Buffered Sapphire

Strong flux pinning due to dislocations associated with stacking faults in Y Ba₂Cu₃O_{7 − δ}thin films prepared by fluorine-free metal organic deposition

Strong flux pinning due to dislocations associated with stacking faults in Y Ba₂Cu₃O_{7 − δ}thin films prepared by fluorine-free metal organic deposition

Dramatic effects of chlorine addition on expanding synthesis conditions for fluorine-free metal–organic decomposition YBa₂Cu₃O_y films