Ambient-condition growth of superconducting YBa2Cu4O8 single crystals using KOH flux

Song, Yongbo; Peng, Jubo; Wang, X.; Sun, G. L.; Lin, C. T.

doi:10.1016/j.jcrysgro.2006.11.076

Cited by 31 publications

(16 citation statements)

References 14 publications

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“…Furthermore, the synthesis of the Y124 phase at ambient pressure has been reported. 22,23) Although a high-oxygen-pressure synthesis method under oxygen pressures over 100 atm was thought to be indispensable to the easy realization of RE124 polycrystals, 17,24) the appropriate choice of flux medium and a lower growth temperature in a flux method enabled the growth of Y124 single crystals at ambient pressure. In the present study, we attempted the synthesis of various RE124 compounds through the optimization of growth temperature in the flux method as a first step.…”

Section: Introductionmentioning

confidence: 99%

Rare-Earth-Dependent Tri-axial Magnetic Anisotropies and Growth Conditions in REBa₂Cu₄O₈

Yamaki

Horii

Haruta

et al. 2011

Jpn. J. Appl. Phys.

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Tri-axial orientation under modulated rotation magnetic fields (MRFs) and the growth of single crystals in ambient pressure were demonstrated in various REBa2Cu4O8 (RE124; RE, rare earth elements) compounds. RE124 crystals have been successfully grown for RE = Y, Sm, Eu, Gd, Dy, Ho, and Er. Optimal growth temperature regions for RE124 largely depended on the type of RE and became narrower in the case of lighter RE ions. By applying an MRF of 10 T, powders of all the grown RE124 were tri-axially oriented in epoxy resin at room temperature, and their orientation axes were clearly dependent on the type of RE ions in RE124. Furthermore, it was found from the changes in the degree of orientation under three different MRF conditions that tri-axial single-ion magnetic anisotropies of heavy RE3+ ions were highest among magnetic anisotropies generated by Cu–O networks and RE3+ ions. The appropriate choice of RE ions in RE-based cuprate superconductors enables the reduction of the magnetic field required for the production of bulk and thick films based on the magnetic orientation technique.

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Section: Introductionmentioning

confidence: 99%

Rare-Earth-Dependent Tri-axial Magnetic Anisotropies and Growth Conditions in REBa₂Cu₄O₈

Yamaki

Horii

Haruta

et al. 2011

Jpn. J. Appl. Phys.

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“…The source material was conventionally prepared polycrystalline YBa 2 Cu 3 O 7mixed with CuO in a molar ratio of 1:1. The details are described in Refs [42,43]…”

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confidence: 99%

“…The details are described in Refs. [42,43]. The crystal size was 0.8 × 0.8 × 0.2 mm 3 , and T c = 80 K. Single crystals were polished in air to obtain a flat and shiny (001) surface.…”

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confidence: 99%

Long-Range Incommensurate Charge Fluctuations in (Y,Nd)Ba ₂ Cu ₃ O ₆₊ _x

Ghiringhelli

Tacon

Minola

et al. 2012

Science

1,061

101

1,232

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The concept that superconductivity competes with other orders in cuprate superconductors has become increasingly apparent, but obtaining direct evidence with bulk-sensitive probes is challenging. We have used resonant soft x-ray scattering to identify two-dimensional charge fluctuations with an incommensurate periodicity of similar to 3.2 lattice units in the copper-oxide planes of the superconductors (Y,Nd)Ba2Cu3O6+x, with hole concentrations of 0.09 to 0.13 per planar Cu ion. The intensity and correlation length of the fluctuation signal increase strongly upon cooling down to the superconducting transition temperature (T-c); further cooling below T-c abruptly reverses the divergence of the charge correlations. In combination with earlier observations of a large gap in the spin excitation spectrum, these data indicate an incipient charge density wave instability that competes with superconductivity

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“…Single crystals of RE124 were synthesized under ambient pressure by a flux method [8] using two reaction processes. One is use of precursor powders calcined using RE 2 O 3 , BaCO 3 , and CuO as starting materials (process A).…”

Section: Methodsmentioning

confidence: 99%

Tri-axial magnetic alignment and rare-earth-dependent tri-axial magnetic anisotropies in REBa₂Cu₄O₈cuprate superconductors

et al. 2013

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We report the growth of single crystals by a flux method in ambient pressure and tri-axial orientation under modulated rotation magnetic fields (MRFs) on REBa 2 Cu 4 O 8 (RE124, RE; rare earth elements) compounds. RE124 crystals were grown for RE = Y, Sm, Eu, Gd, Dy, Ho, Er, Tm, and Yb through appropriate choice of source compounds. All the obtained RE124 powders were tri-axially aligned in MRF of 10T, whereas magnetization axes depended on the type of RE. Moreover, it was found from the changes in the degrees of c-axis and inplane orientation that triaxial magnetic anisotropies of RE124 also depended on the type of RE. This indicates that it appropriate choice of RE is important for the fabrication of tri-axial oriented ceramics in lower magnetic field conditions.

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Ambient-condition growth of superconducting YBa2Cu4O8 single crystals using KOH flux

Cited by 31 publications

References 14 publications

Rare-Earth-Dependent Tri-axial Magnetic Anisotropies and Growth Conditions in REBa₂Cu₄O₈

Rare-Earth-Dependent Tri-axial Magnetic Anisotropies and Growth Conditions in REBa₂Cu₄O₈

Long-Range Incommensurate Charge Fluctuations in (Y,Nd)Ba ₂ Cu ₃ O ₆₊ _x

Tri-axial magnetic alignment and rare-earth-dependent tri-axial magnetic anisotropies in REBa₂Cu₄O₈cuprate superconductors

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Ambient-condition growth of superconducting YBa2Cu4O8 single crystals using KOH flux

Cited by 31 publications

References 14 publications

Rare-Earth-Dependent Tri-axial Magnetic Anisotropies and Growth Conditions in REBa2Cu4O8

Rare-Earth-Dependent Tri-axial Magnetic Anisotropies and Growth Conditions in REBa2Cu4O8

Long-Range Incommensurate Charge Fluctuations in (Y,Nd)Ba 2 Cu 3 O 6+ x

Tri-axial magnetic alignment and rare-earth-dependent tri-axial magnetic anisotropies in REBa2Cu4O8cuprate superconductors

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Product

Resources

About

Rare-Earth-Dependent Tri-axial Magnetic Anisotropies and Growth Conditions in REBa₂Cu₄O₈

Rare-Earth-Dependent Tri-axial Magnetic Anisotropies and Growth Conditions in REBa₂Cu₄O₈

Long-Range Incommensurate Charge Fluctuations in (Y,Nd)Ba ₂ Cu ₃ O ₆₊ _x

Tri-axial magnetic alignment and rare-earth-dependent tri-axial magnetic anisotropies in REBa₂Cu₄O₈cuprate superconductors