The Structural Evolution of $(\hbox{Gd}, \hbox{Y}) \hbox{Ba}_{2}\hbox{Cu}_{3}\hbox{O}_{\rm x}$ Tapes With Zr Addition Made by Metal Organic Chemical Vapor Deposition

We have fabricated 5.6 vol.% BaHfO 3 (BHO)-doped SmBa 2 Cu 3 O y (SmBCO) films at a low substrate temperature of 750 °C by using the low temperature growth (LTG) technique with a seed layer. Using the LTG technique, we can obtain a purely c-axis oriented SmBCO film even at low growth temperatures. The LTG technique also greatly increases the number density of BHO nanorods. The size and matching field of the BHO nanorods in the films were 5.4 nm and 9.9 T. Transport measurements were carried out, and a high irreversibility field (B irr ) and strong flux pinning force density (F p ) were obtained. The B irr was 15.1 T at 77 K for B//c. The maximum F p of 407 GN m −3 in 10 T at 40 K and 770 GN m −3 from 9 to 17 T at 20 K have been measured. We believe that the LTG technique can be considered as important for improving of flux pinning performance in BaMO 3 (BMO: M=Zr, Sn and Hf)-doped SmBCO coated conductors.

show abstract

Vortex pinning at low temperature under high magnetic field in SmBa₂Cu₃O_ysuperconducting films with high number density and small size of BaHfO₃nano-rods

Miura

Yoshida

Tsuruta

et al. 2015

Supercond. Sci. Technol.

View full text Add to dashboard Cite

show abstract

Influence of superconductor film composition on adhesion strength of coated conductors

Kesgin

Khatri

Wang

et al. 2015

Supercond. Sci. Technol.

View full text Add to dashboard Cite

The effect of high temperature superconductor (HTS) film composition on the adhesion strength of rare-earth barium copper oxide coated conductors (CCs) has been studied. It has been found that the mechanical integrity of the superconductor layer is very susceptible to the defects especially those along the ab plane, probably due to the weak interfaces between the defects and the matrix. Gd and Y in the standard composition were substituted with Sm and the number of in-plane defects was drastically reduced. Consequently, a four-fold increase in adhesion or peeling strength in Sm-based CCs was achieved compared to the standard GdYBCO samples.

show abstract

2G HTS wires made on 30μm thick Hastelloy substrate

Sundaram¹,

Zhang²,

Knoll³

et al. 2016

Supercond. Sci. Technol.

View full text Add to dashboard Cite

REBCO (RE = rare earth) based high temperature superconducting (HTS) wires are now being utilized for the development of electric and electromagnetic devices for various industrial, scientific and medical applications. In the last several years, the increasing efforts in using the so-called second generation (2G) HTS wires for some of the applications require a further increase in their engineering current density (Je). The applications are those typically related to high magnetic fields where the higher Je of a REBCO wire, in addition to its higher irreversibility fields and higher mechanical strength, is already a major advantage over other superconducting wires. An effective way to increase the Je is to decrease the total thickness of a wire, for which using a thinner substrate becomes an obvious and attractive approach. By using our IBAD-MOCVD (ion beam assisted deposition-metal organic chemical vapor deposition) technology we have successfully made 2G HTS wires using a Hastelloy® C276 substrate that is only 30 μm in thickness. By using this thinner substrate instead of the typical 50 μm thick substrate and with a same critical current (Ic), the Je of a wire can be increased by 30% to 45% depending on the copper stabilizer thickness. In this paper, we report the fabrication and characterization of the 2G HTS wires made on the 30 μm thick Hastelloy® C276 substrate. It was shown that with the optimization in the processing protocol, the surface of the thinner Hastelloy® C276 substrate can be readily electropolished to the quality needed for the deposition of the buffer stack. Same in the architecture as that on the standard 50 μm thick substrate, the buffer stack made on the 30 μm thick substrate showed an in-plane texture with a Δϕ of around 6.7° in the LaMnO3 cap layer. Low-temperature in-field transport measurement results suggest that the wires on the thinner substrate had achieved equivalent superconducting performance, most importantly the Ic, as those on the 50 μm thick substrate. It is expected the 2G HTS wires made on the 30 μm thick Hastelloy® C276 substrate, the thinnest and with the highest Je to date, will greatly benefit such applications as high field magnets and high current cables.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

hi@scite.ai

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

The Structural Evolution of $(\hbox{Gd}, \hbox{Y}) \hbox{Ba}_{2}\hbox{Cu}_{3}\hbox{O}_{\rm x}$ Tapes With Zr Addition Made by Metal Organic Chemical Vapor Deposition

Cited by 6 publications

References 9 publications

Vortex pinning at low temperature under high magnetic field in SmBa₂Cu₃O_ysuperconducting films with high number density and small size of BaHfO₃nano-rods

Vortex pinning at low temperature under high magnetic field in SmBa₂Cu₃O_ysuperconducting films with high number density and small size of BaHfO₃nano-rods

Influence of superconductor film composition on adhesion strength of coated conductors

2G HTS wires made on 30μm thick Hastelloy substrate

Contact Info

Product

Resources

About

The Structural Evolution of $(\hbox{Gd}, \hbox{Y}) \hbox{Ba}_{2}\hbox{Cu}_{3}\hbox{O}_{\rm x}$ Tapes With Zr Addition Made by Metal Organic Chemical Vapor Deposition

Cited by 6 publications

References 9 publications

Vortex pinning at low temperature under high magnetic field in SmBa2Cu3Oysuperconducting films with high number density and small size of BaHfO3nano-rods

Vortex pinning at low temperature under high magnetic field in SmBa2Cu3Oysuperconducting films with high number density and small size of BaHfO3nano-rods

Influence of superconductor film composition on adhesion strength of coated conductors

2G HTS wires made on 30μm thick Hastelloy substrate

Contact Info

Product

Resources

About

Vortex pinning at low temperature under high magnetic field in SmBa₂Cu₃O_ysuperconducting films with high number density and small size of BaHfO₃nano-rods

Vortex pinning at low temperature under high magnetic field in SmBa₂Cu₃O_ysuperconducting films with high number density and small size of BaHfO₃nano-rods