Competition between ferromagnetism and superconductivity in GdBa2Cu3O7-x/La0.7Sr0.3MnO3 bilayers with varying thickness

Oh, J. Y.; Yang, Dong‐Seok; Kang, Won Nam; Kang, Byeongwon

doi:10.1016/j.ceramint.2021.09.192

Cited by 7 publications

(3 citation statements)

References 38 publications

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“…Similar behavior has been seen in the case of LSMO/GdBCO bilayer samples. 26 , 27 The variation of p and q parameters indicates that the defect contribution is maximum when the LSMO thickness is 10 nm. As the LSMO layer becomes thicker, magnetization in the ferromagnetic layer increases, which enhances the magnetic pinning in these bilayer samples.…”

Section: Resultsmentioning

confidence: 99%

Interface Effects on Magnetic Flux Pinning in La_0.7Sr_0.3MnO₃/YBa ₂Cu₃O_7–x Bilayers

2023

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The magnetic pinning properties of a ferromagnet/superconductor hybrid structure consisting of a La0.7Sr0.3MnO3(LSMO) layer with various thicknesses on top of a fixed thickness YBa2Cu3O7–x (YBCO) layer are investigated in this article. The existence of a weakly magnetic layer was identified at the interface between YBCO and LSMO by a ferromagnetic resonance (FMR) study. Magnetic moment and anisotropy of the interfacial layer were probed using the angular-dependent FMR study. This layer gives rise to an additional flux pinning contribution to the bulk magnetic pinning from the LSMO layer. Our study provides insight into the complex interface physics in the LSMO/YBCO bilayer system, promoting a new pathway for the development of novel flux pinning-related functionality.

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Section: Resultsmentioning

confidence: 99%

Interface Effects on Magnetic Flux Pinning in La_0.7Sr_0.3MnO₃/YBa ₂Cu₃O_7–x Bilayers

2023

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“…Specifically, a positive (negative) value of A XLD indicates the presence of compressive (tensile) strain in the in-plane direction. Moreover, the LFO (110) plane spacing of BL, representing the out-of-plane lattice parameter obtained through XRD, is directly correlated with the in-plane strain. − …”

Section: Resultsmentioning

confidence: 99%

“…Fourier transformation of the EXAFS spectra was performed, followed by first shell fitting. This analytical approach enabled the extraction of information about the Fe–O and Cu–O bonds, representing the closest atomic interactions at each edge. , Specific details such as bond stability and length were derived from this valuable information. In Figure a,b, we analyzed the variations in Fe–O bonds for the SL and BL.…”

Section: Resultsmentioning

confidence: 99%

Exploring Structural Features and Growth Mechanisms in GdBa₂Cu₃O_7–x/LaFeO₃ Bilayers on SrTiO₃ Substrates

Park,

Oh,

Kang

2024

ACS Omega

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This study investigated a novel approach to enhance the performance of superconductors by applying a LaFeO 3 (LFO) buffer layer on a GdBa 2 Cu 3 O 7−x (GdBCO) superconducting thin film. LFO is a rare-earth orthoferrite (REFO) materials. The objective was to assess how the thickness of the LFO layer influences the superconducting properties of the GdBCO material. LFO layers were fabricated at thicknesses of 50, 100, 150, and 200 nm, and subsequently, a 200 nm thick layer of GdBCO was deposited to create a bilayer structure. This study represents the first utilization of a REFO material, specifically LFO, as a buffer layer, with findings showing its growth in a pseudocubic structure. We thoroughly examined the characteristics of LFO, including its structural, surface, and strain states, focusing on the impact of varying layer thicknesses. Additionally, we investigated changes within the GdBCO/LFO bilayer and analyzed how LFO influences the properties of GdBCO. It was found that the application of the LFO buffer layer by varying thicknesses not only provided structural compatibility with GdBCO but also consistently resulted in the improvement of its superconducting transition temperature, as evidenced by the enhanced Tc-onset values reaching up to 92.4 K with an LFO thickness of 150 nm. These findings reveal significant potential in utilizing REFO materials, particularly those derived from LFO, as effective buffer layers in superconductor applications.

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Study on I-V Behavior of YBCO Film on 5 mm × 10 mm LAO Under DC Pulse by Electric Transport Method

Liang

et al. 2022

J Supercond Nov Magn

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Competition between ferromagnetism and superconductivity in GdBa2Cu3O7-x/La0.7Sr0.3MnO3 bilayers with varying thickness

Cited by 7 publications

References 38 publications

Interface Effects on Magnetic Flux Pinning in La_0.7Sr_0.3MnO₃/YBa ₂Cu₃O_7–x Bilayers

Interface Effects on Magnetic Flux Pinning in La_0.7Sr_0.3MnO₃/YBa ₂Cu₃O_7–x Bilayers

Exploring Structural Features and Growth Mechanisms in GdBa₂Cu₃O_7–x/LaFeO₃ Bilayers on SrTiO₃ Substrates

Study on I-V Behavior of YBCO Film on 5 mm × 10 mm LAO Under DC Pulse by Electric Transport Method

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Competition between ferromagnetism and superconductivity in GdBa2Cu3O7-x/La0.7Sr0.3MnO3 bilayers with varying thickness

Cited by 7 publications

References 38 publications

Interface Effects on Magnetic Flux Pinning in La0.7Sr0.3MnO3/YBa 2Cu3O7–x Bilayers

Interface Effects on Magnetic Flux Pinning in La0.7Sr0.3MnO3/YBa 2Cu3O7–x Bilayers

Exploring Structural Features and Growth Mechanisms in GdBa2Cu3O7–x/LaFeO3 Bilayers on SrTiO3 Substrates

Study on I-V Behavior of YBCO Film on 5 mm × 10 mm LAO Under DC Pulse by Electric Transport Method

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Interface Effects on Magnetic Flux Pinning in La_0.7Sr_0.3MnO₃/YBa ₂Cu₃O_7–x Bilayers

Interface Effects on Magnetic Flux Pinning in La_0.7Sr_0.3MnO₃/YBa ₂Cu₃O_7–x Bilayers

Exploring Structural Features and Growth Mechanisms in GdBa₂Cu₃O_7–x/LaFeO₃ Bilayers on SrTiO₃ Substrates