Precise Tuning of (YBa2Cu3O7‐δ)1‐x:(BaZrO3)x Thin Film Nanocomposite Structures

Zhao, Run; Li, Weiwei; Lee, Joon Hwan; Choi, Eun Mi; Liang, Yan; Zhang, Wei; Tang, Rujun; Wang, Haiyan; Jia, Q. X.; MacManus‐Driscoll, Judith L.; Yang, Hao

doi:10.1002/adfm.201304302

Cited by 51 publications

(28 citation statements)

References 57 publications

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“…8 Nanocolumns for example effectively pin the vortices especially at the magnetic field parallel to the YBCO c-axis. [9][10][11][12][13] In recent years, significant advances in chemical solution deposition (CSD) of both buffer layer architecture and superconducting layer have shown the potential of CSD-based superconductors for a wide range of technological applications. [14][15][16] Typically, a precursor solution, containing yttrium, barium and copper trifluoroacetates, is successively deposited, pyrolyzed and crystallized into YBa2Cu3O7-δ thin films ( Figure 1).…”

Section: Introductionmentioning

confidence: 99%

Optimizing Nanocomposites through Nanocrystal Surface Chemistry: Superconducting YBa₂Cu₃O₇ Thin Films via Low-Fluorine Metal Organic Deposition and Preformed Metal Oxide Nanocrystals

et al. 2017

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Achieving low cost, safe, reproducible and high performance superconducting thin films of YBa2Cu3O7-δ is essential to bring this material to the energy market. Here, we report on the chemical solution deposition of YBa2Cu3O7-δ nanocomposites from environmentally benign precursors with a low-fluorine content. Preformed ZrO2 nanocrystals (3.5 nm) were stabilized in a methanolic precursor solution via two strategies: charge stabilization and steric stabilization. Counter-intuitively, charge stabilization did not result in high quality superconducting layers, while the steric stabilization resulted in highly reproducible nanocomposite thin films with a self-field Jc of 4-5 MA cm -² (77 K) and a much smaller decay of Jc with magnetic field compared to YBa2Cu3O7-δ without nanocrystals. In addition, these nanocomposite films show a strong pinning force enhancement and a reduced Jc anisotropy compared to undoped YBa2Cu3O7-δ films. Given the relationship between the nanocrystal surface chemistry and final nanocomposite performance, we expect these results to be also relevant for other nanocomposite research.-2 -

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Section: Introductionmentioning

confidence: 99%

Optimizing Nanocomposites through Nanocrystal Surface Chemistry: Superconducting YBa₂Cu₃O₇ Thin Films via Low-Fluorine Metal Organic Deposition and Preformed Metal Oxide Nanocrystals

et al. 2017

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“…There are several reports which discuss the kinetic and thermodynamic factors determining the formation of nanocomposites. [ 6,13,[40][41][42] Here, we suggest the SrO nanorods form to partially release elastic energy, or as a result of the changes in perovskite composition as the Cu separates out from the matrix phase.…”

Section: Resultsmentioning

confidence: 94%

A Three Component Self‐Assembled Epitaxial Nanocomposite Thin Film

Kim

Sun

Aimon

et al. 2015

Adv Funct Materials

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3091wileyonlinelibrary.com magnetic, ferroelectric, piezoelectric, and multiferroic behaviors. [1][2][3][4][5] Nanocomposite oxides, with heterogeneous structures, can enable combinations of useful properties in one fi lm, and such fi lms can be formed by codeposition of two dissimilar phases. A notable example is the vertical nanocomposites formed from a spinel and a perovskite phase, such as BiFeO 3 -CoFe 2 O 4 grown on (001) SrTiO 3 which consist of columnar crystals of the spinel within a perovskite matrix, both epitaxial with the substrate. These have shown magnetism, ferroelectricity, and magnetoelectric coupling, [5][6][7][8] and, moreover, the locations of the spinel pillars on the substrate can be guided using a template. [12][13][14] The selfassembled fi lms are conveniently grown using pulsed laser deposition (PLD) from a single target or by alternating deposition from two different targets. Nanocomposite fi lms have also been produced consisting of metallic nanostructures in an oxide matrix, including Co x Ni 1-x alloy nanowires, Co nanocrystals, nanofi bers, or Fe nanorods embedded in a CeO 2 , TiO 2 , perovskite or other oxide matrix. [15][16][17][18][19] For example, metallic Cu nanopillars or nanoparticles in an oxide matrix have been reported for plasmon resonance studies and for battery electrodes. [20][21][22] The vertical nanocomposite fi lms reported to date comprise two different phases, but additional functionalities and crosscoupling of properties may be possible in nanocomposites with more than two phases. Three-phase oxide nanocomposites consisting of La 2 O 3 , SrO, and Co 2 O 3 were reported previously [ 23,24 ] but there has been no report on three-phase nanocomposites showing a vertically oriented epitaxial growth analogous to that seen in two-phase nanocomposites. Other examples of selfassembled oxide nanostructures include SrO x and (La,Sr)O x nanodots at the interface of Sr(Ti,Fe)O 3 and La 0.7 Sr 0.3 MnO 3 thin fi lms, which formed as a consequence of strain relaxation and electrostatic and elastic interactions, [ 25,26 ] and compositional heterogeneities which were found to develop in perovskite fi lms due to cation size and charge effects. [ 27 ] In this article, we describe the growth of a three-phase self-assembled epitaxial nanocomposite thin fi lm, denoted nc-STCu (nanocomposite-STCu), consisting of metallic Cu nanorods surrounded by a rocksalt-structured SrO oxide shell within a matrix of a Sr(Ti,Cu)O 3-δ perovskite phase. We then discuss the formation of a nanoporous oxide fi lm by

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“…1 in Ref. 14), with increasing x, the architecture of YBCO:BZO thin films has been changed: from vertically to horizontally aligned nanostructure. 14 In detail, in case of x 0.25, BZO shows as vertically aligned nano-columns (perpendicular to the substrate surface).…”

Section: Resultsmentioning

confidence: 97%

“…The details of deposition have been presented elsewhere. 14 The film thicknesses, revealed by transmission electron microscopy (TEM, FEI Tecnai F20 analytical microscope), were 120-200 nm. The crystal structure was investigated by X-ray diffraction (XRD, Siemens D5000 four-circle diffractometer) and TEM.…”

Section: Methodsmentioning

confidence: 99%

Nanostructure manipulation and its influence on functionalities in self-assembled oxide thin films

Wang

Zhao

et al. 2014

Journal of Applied Physics

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Self-assembled oxide thin films have tremendous potential applications in next generation of multifunctional systems. However, the manipulation of nanostructures and understanding on the relationship between nanostructures and functionalities remain as substantial challenges. Recently, an interesting architecture transformation between two basic nanocomposite structures has been demonstrated, i.e., from a horizontal layered structure to a vertical columnar structure, simply by tuning the film compositions in the (YBa2Cu3O7-δ)1-x:(BaZrO3)x system. In this work, the architecture dependence of functionalities has been investigated. The nanostructure manipulation has been revealed to largely affect the lattice structures and superconductive properties, especially at the critical composition of nanostructure transformation. The present work represents a novel approach to tune the self-assembled nanostructures and to further understand that how the nanostructures contribute to the functionalities in oxide thin films.

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Precise Tuning of (YBa₂Cu₃O_7‐δ)_1‐x:(BaZrO₃)_x Thin Film Nanocomposite Structures

Cited by 51 publications

References 57 publications

Optimizing Nanocomposites through Nanocrystal Surface Chemistry: Superconducting YBa₂Cu₃O₇ Thin Films via Low-Fluorine Metal Organic Deposition and Preformed Metal Oxide Nanocrystals

Optimizing Nanocomposites through Nanocrystal Surface Chemistry: Superconducting YBa₂Cu₃O₇ Thin Films via Low-Fluorine Metal Organic Deposition and Preformed Metal Oxide Nanocrystals

A Three Component Self‐Assembled Epitaxial Nanocomposite Thin Film

Nanostructure manipulation and its influence on functionalities in self-assembled oxide thin films

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Precise Tuning of (YBa2Cu3O7‐δ)1‐x:(BaZrO3)x Thin Film Nanocomposite Structures

Cited by 51 publications

References 57 publications

Optimizing Nanocomposites through Nanocrystal Surface Chemistry: Superconducting YBa2Cu3O7 Thin Films via Low-Fluorine Metal Organic Deposition and Preformed Metal Oxide Nanocrystals

Optimizing Nanocomposites through Nanocrystal Surface Chemistry: Superconducting YBa2Cu3O7 Thin Films via Low-Fluorine Metal Organic Deposition and Preformed Metal Oxide Nanocrystals

A Three Component Self‐Assembled Epitaxial Nanocomposite Thin Film

Nanostructure manipulation and its influence on functionalities in self-assembled oxide thin films

Contact Info

Product

Resources

About

Precise Tuning of (YBa₂Cu₃O_7‐δ)_1‐x:(BaZrO₃)_x Thin Film Nanocomposite Structures

Optimizing Nanocomposites through Nanocrystal Surface Chemistry: Superconducting YBa₂Cu₃O₇ Thin Films via Low-Fluorine Metal Organic Deposition and Preformed Metal Oxide Nanocrystals

Optimizing Nanocomposites through Nanocrystal Surface Chemistry: Superconducting YBa₂Cu₃O₇ Thin Films via Low-Fluorine Metal Organic Deposition and Preformed Metal Oxide Nanocrystals