Fabrication of GdBa2Cu3O7−x films by TFA-MOD process

Jin, Lihua; Lu, Y.F.; Yan, Wu; Yu, Z.M.; Wang, Y.; Li, C.S.

doi:10.1016/j.jallcom.2010.12.062

Cited by 18 publications

(8 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Among the REBCO compounds, the GdBa 2 Cu 3 O 7- (GdBCO) offers an appealing potential over YBCO [16][17][18] . In particular, the increase of the T c that is observed in GdBCO bulk 7,18 and thin films 19,20 , reaching up to 94-95 K, causes an upward shift of the irreversibility line which makes GdBCO a very promising material for some applications.…”

Section: Introductionmentioning

confidence: 99%

Epitaxial superconducting GdBa₂Cu₃O_7−δ/Gd₂O₃ nanocomposite thin films from advanced low-fluorine solutions

Cayado

Mundet

Eloussifi

et al. 2017

Supercond. Sci. Technol.

View full text Add to dashboard Cite

We have employed the CSD method to synthesize GdBCO and GdBCO-Gd 2 O 3 nanocomposite 250-300 nm thin films. For this we have designed a new Low-Fluorine (LF) solution never used before in the synthesis of GdBCO thin films that allow to reduce the HF release by 80% and increasing the reproducibility of the pyrolysis process. The growth of these thin films required the design of a new thermal process what we called "Flash-Heating" in which the heating rate is extremely fast (~600 ºC/min). The structure and the superconducting properties of the pristine GdBCO films are excellent showing a (00l) epitaxial orientation of the GdBCO grains and T c values that reach 92.8 K which means and enhancement of more than 1 K with respect to the standard YBCO films. The calculated J c inside the grains ( ) present also remarkable values: (5 K) ~ 40 MA/cm 2 and (77 K) ~ 3.3 MA/cm 2 . Finally, the GdBCO-Gd 2 O 3 nanocomposites films, with a 20% mol of Gd 2 O 3 , exhibit superior superconducting properties and pinning performances with respect to the GdBCO pristine films.

show abstract

Section: Introductionmentioning

confidence: 99%

Epitaxial superconducting GdBa₂Cu₃O_7−δ/Gd₂O₃ nanocomposite thin films from advanced low-fluorine solutions

Cayado

Mundet

Eloussifi

et al. 2017

Supercond. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…It is a scalable, versatile and low-cost technique that follows a chemical route for the growth of the films [18][19][20][21][22] and is thus suitable for the preparation of CCs. Very popular and thoroughly studied is the TFA-MOD route, which is a particular CSD technique leading to excellent superconducting properties in GdBCO films 12,[23][24][25][26][27][28][29][30][31] .…”

Section: Importance Of the Pyrolysis For Microstructure And Supercondmentioning

confidence: 99%

Importance of the pyrolysis for microstructure and superconducting properties of CSD-grown GdBa2Cu3O7−x-HfO2 nanocomposite films by the ex-situ approach

Cayado

Rijckaert

Bruneel

et al. 2020

Sci Rep

View full text Add to dashboard Cite

For the first time, GdBa2Cu3O7−x nanocomposites were prepared by chemical solution deposition following the ex-situ approach. In particular, ~ 220 nm GdBa2Cu3O7−x-HfO2 (GdBCO-HfO2) nanocomposite films were fabricated starting from a colloidal solution of 5 mol% HfO2 nanoparticles. Hereby, one of the main challenges is to avoid the accumulation of the nanoparticles at the substrate interface during the pyrolysis, which would later prevent the epitaxial nucleation of the GdBCO grains. Therefore, the effect of pyrolysis processing parameters such as heating ramp and temperature on the homogeneity of the nanoparticle distribution has been investigated. By increasing the heating ramp to 300 °C/h and decreasing the final temperature to 300 °C, a more homogenous nanoparticle distribution was achieved. This translates into improved superconducting properties of the grown films reaching critical temperatures (Tc) of 94.5 K and self-field critical current densities ($${J}_{\mathrm{c}}^{\mathrm{sf}}$$ J c sf ) at 77 K of 2.1 MA/cm2 with respect to films pyrolyzed at higher temperatures or lower heating ramps.

show abstract

“…The oxygen partial pressure is particularly important, which directly determines the pure c-axis orientation structure and oxygen content of SmBCO film [15,16]. In recent years, some researches showed that the suitable oxygen partial pressure contributed to optimize the structure of SmBCO film and improve the superconducting properties [17,18]. Jin et al found that the low oxygen partial pressure was required to successfully obtain GdBCO films without impurity phases and a-axis-oriented grains [17].…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, some researches showed that the suitable oxygen partial pressure contributed to optimize the structure of SmBCO film and improve the superconducting properties [17,18]. Jin et al found that the low oxygen partial pressure was required to successfully obtain GdBCO films without impurity phases and a-axis-oriented grains [17]. Li et al discovered that the morphology, growth rate, and degree of texture formation of YBCO films were affected obviously by oxygen partial pressure deposited by photo-assisted MOCVD [19].…”

Section: Introductionmentioning

confidence: 99%

Influence of oxygen partial pressure on SmBa₂Cu₃O_7-δ film deposited by laser chemical vapor deposition

Wang

Zhang

et al. 2020

Journal of Asian Ceramic Societies

View full text Add to dashboard Cite

Fabrication of GdBa2Cu3O7−x films by TFA-MOD process

Cited by 18 publications

References 15 publications

Epitaxial superconducting GdBa₂Cu₃O_7−δ/Gd₂O₃ nanocomposite thin films from advanced low-fluorine solutions

Epitaxial superconducting GdBa₂Cu₃O_7−δ/Gd₂O₃ nanocomposite thin films from advanced low-fluorine solutions

Importance of the pyrolysis for microstructure and superconducting properties of CSD-grown GdBa2Cu3O7−x-HfO2 nanocomposite films by the ex-situ approach

Influence of oxygen partial pressure on SmBa₂Cu₃O_7-δ film deposited by laser chemical vapor deposition

Contact Info

Product

Resources

About

Fabrication of GdBa2Cu3O7−x films by TFA-MOD process

Cited by 18 publications

References 15 publications

Epitaxial superconducting GdBa2Cu3O7−δ /Gd2O3 nanocomposite thin films from advanced low-fluorine solutions

Epitaxial superconducting GdBa2Cu3O7−δ /Gd2O3 nanocomposite thin films from advanced low-fluorine solutions

Importance of the pyrolysis for microstructure and superconducting properties of CSD-grown GdBa2Cu3O7−x-HfO2 nanocomposite films by the ex-situ approach

Influence of oxygen partial pressure on SmBa2Cu3O7-δ film deposited by laser chemical vapor deposition

Contact Info

Product

Resources

About

Epitaxial superconducting GdBa₂Cu₃O_7−δ/Gd₂O₃ nanocomposite thin films from advanced low-fluorine solutions

Epitaxial superconducting GdBa₂Cu₃O_7−δ/Gd₂O₃ nanocomposite thin films from advanced low-fluorine solutions

Influence of oxygen partial pressure on SmBa₂Cu₃O_7-δ film deposited by laser chemical vapor deposition