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Miura, Masashi; Maiorov, B.; Baily, S. A.; Haberkorn, N.; Willis, J. O.; Marken, K.R.; Izumi, Toru; Shiohara, Yuh; Civale, L.

doi:10.1103/physrevb.83.184519

Cited by 106 publications

(97 citation statements)

References 37 publications

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“…42 This improvement is maintained as a function of field with J c (H) that does not follow the standard power-law dependence. This type of non-power-law dependence is similar to that observed in cuprate 21,31,41,43 and pnictide films 44 with the strong pinning in both cases being due to the NPs. Because of the large NP size (~25 nm) in the +12BZO (d coat = 150 nm) film, NPs cease being the dominant pinning center at low temperatures; the significant improvements at high temperatures are lost, and a power-law dependence is regained similarly to the reference film.…”

Section: Dramatically Higher J C With Nearly Isotropic Angular Dependsupporting

confidence: 65%

“…This behavior occurs at all temperatures with α~0.63-0.7. 41 For both NP films, we observe an increase in J c s.f. and μ 0 H* at all temperatures, consistent with a much larger density of NPs.…”

Section: Dramatically Higher J C With Nearly Isotropic Angular Dependmentioning

confidence: 76%

“…There is additional evidence of the link between S improvement and J c enhancement; a lower S(T) for BZO is observed down to~40 K, where D BZO /2ξ ab (T)~3, which is concomitant with the loss of the non-power-law behavior in J c (H) and the marked decrease in the J c,BZO /J c,standard ratio. 41 On the other hand, the +12BHO (d coat = 30 nm) film shows a lower S at all temperatures compared with that of the other two films. These data indicate the importance of both density and size to reduce flux creep as well as to increase J c .…”

Section: Dramatically Higher J C With Nearly Isotropic Angular Dependmentioning

confidence: 96%

“…Because of the large NP size (~25 nm) in the +12BZO (d coat = 150 nm) film, NPs cease being the dominant pinning center at low temperatures; the significant improvements at high temperatures are lost, and a power-law dependence is regained similarly to the reference film. 41 However, given the small size (~7 nm) of the +12BHO (d coat = 30 nm) films, a non-power-law J c (H) decay is observed, indicating that NPs are the dominant pinning center at all temperatures. This is also seen in the magnitude of the J c increase at 3 T that is approximately a factor of 6 at all temperatures (see Table 1).…”

Section: Dramatically Higher J C With Nearly Isotropic Angular Dependmentioning

confidence: 99%

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Tuning nanoparticle size for enhanced functionality in perovskite thin films deposited by metal organic deposition

et al. 2017

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Because of pressing global environmental challenges, focus has been placed on materials for efficient energy use, and this has triggered the search for nanostructural modification methods to improve performance. Achieving a high density of tunable-sized second-phase nanoparticles while ensuring the matrix remains intact is a long-sought goal. In this paper, we present an effective, scalable method to achieve this goal using metal organic deposition in a perovskite system REBa 2 Cu 3 O 7 (rare earth (RE)) that enhances the superconducting properties to surpass that of previous achievements. We present two industrially compatible routes to tune the nanoparticle size by controlling diffusion during the nanoparticle formation stage by selecting the second-phase material and modulating the precursor composition spatially. Combining these routes leads to an extremely high density (8 × 10 22 m − 3 ) of small nanoparticles (7 nm) that increase critical currents and reduce detrimental effects of thermal fluctuations at all magnetic field strengths and temperatures. This method can be directly applied to other perovskite materials where nanoparticle addition is beneficial.

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Section: Dramatically Higher J C With Nearly Isotropic Angular Dependsupporting

confidence: 65%

Section: Dramatically Higher J C With Nearly Isotropic Angular Dependmentioning

confidence: 76%

Section: Dramatically Higher J C With Nearly Isotropic Angular Dependmentioning

confidence: 96%

Section: Dramatically Higher J C With Nearly Isotropic Angular Dependmentioning

confidence: 99%

See 2 more Smart Citations

Tuning nanoparticle size for enhanced functionality in perovskite thin films deposited by metal organic deposition

et al. 2017

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“…To the best of our knowledge, such a high J c value has not been reported on any of the iron-based superconductors. This is a remarkably high J c for a single crystal, considering that even in state-of-the-art YBCO conductors, the self-field J c has reached only 15-25% of the depairing current after a decade of pinning landscape engineering [24][25][26] . By increasing the density of defects and by combining different types of pinning centres into SmFeAsO 0.8 F 0.15 , further enhancement of J c can be expected.…”

Section: Resultsmentioning

confidence: 99%

Huge critical current density and tailored superconducting anisotropy in SmFeAsO0.8F0.15 by low-density columnar-defect incorporation

et al. 2013

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Iron-based superconductors could be useful for electricity distribution and superconducting magnet applications because of their relatively high critical current densities and upper critical fields. SmFeAsO 0.8 F 0.15 is of particular interest as it has the highest transition temperature among these materials. Here we show that by introducing a low density of correlated nano-scale defects into this material by heavy-ion irradiation, we can increase its critical current density to up to 2 Â 10 7 A cm À 2 at 5 K-the highest ever reported for an ironbased superconductor-without reducing its critical temperature of 50 K. We also observe a notable reduction in the thermodynamic superconducting anisotropy, from 8 to 4 upon irradiation. We develop a model based on anisotropic electron scattering that predicts that the superconducting anisotropy can be tailored via correlated defects in semimetallic, fully gapped type II superconductors.

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A review of vortex pinning in REBa₂Cu₃O_7‐x coated conductors

Wang,

Huang,

Ding

et al. 2024

cMat

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REBa2Cu3O7‐x (REBCO) exhibits outstanding qualities such as a high irreversible field (7 T) and strong current‐carrying capacity (77 K, 106 A cm−2), making it ideal for high magnetic field applications such as fusion, accelerators, and nuclear magnetic resonance. However, the degradation of in‐field critical current density (Jc) due to vortex motion is a significant hurdle. Research indicates that improving vortex pinning can notably enhance Jc in REBCO, showing promise for its future high‐field applications. This review explores vortex pinning mechanisms, artificial pinning centers (APCs), and how environmental conditions affect pinning characteristics, highlighting advancements in vortex pinning for REBCO in magnetic fields. Different methods for introducing APCs are discussed and compared for evaluating their efficacy in achieving optimal nanoparticle distributions and consequent superconducting performance improvements, underscoring the importance of nano‐defect features (type, size, and distribution) in optimizing the superconducting properties of the REBCO. Additionally, the review tackles current challenges, shares recent research breakthroughs, and outlines future research directions for designing pinning landscapes to further improve REBCO performance.

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Mixed pinning landscape in nanoparticle-introduced YGdBa2Cu3O

Cited by 106 publications

References 37 publications

Tuning nanoparticle size for enhanced functionality in perovskite thin films deposited by metal organic deposition

Tuning nanoparticle size for enhanced functionality in perovskite thin films deposited by metal organic deposition

Huge critical current density and tailored superconducting anisotropy in SmFeAsO0.8F0.15 by low-density columnar-defect incorporation

A review of vortex pinning in REBa₂Cu₃O_7‐x coated conductors

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Mixed pinning landscape in nanoparticle-introduced YGdBa2Cu3O

Cited by 106 publications

References 37 publications

Tuning nanoparticle size for enhanced functionality in perovskite thin films deposited by metal organic deposition

Tuning nanoparticle size for enhanced functionality in perovskite thin films deposited by metal organic deposition

Huge critical current density and tailored superconducting anisotropy in SmFeAsO0.8F0.15 by low-density columnar-defect incorporation

A review of vortex pinning in REBa2Cu3O7‐x coated conductors

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A review of vortex pinning in REBa₂Cu₃O_7‐x coated conductors