Substrate surface decoration with CeO2 nanoparticles: An effective method for improving flux pinning in YBa2Cu 3O7-δ films

T. Aytug; M. Paranthaman; A. A. Gapud; S. Kang; M. Varela; P. M. Martin; J. M. Raitano; S. W. Chan; J. R. Thompson; D. K. Christen

doi:10.1109/TASC.2007.899492

Substrate surface decoration with CeO₂ nanoparticles: An effective method for improving flux pinning in YBa₂Cu ₃O_7-δ films

T. Aytug^*
, M. Paranthaman
, A. A. Gapud
, S. Kang
, M. Varela
, P. M. Martin
, J. M. Raitano
, S. W. Chan
, J. R. Thompson
, D. K. Christen

^*Corresponding author for this work

Department of Physics

University of Tennessee
Oak Ridge National Laboratory
University of South Alabama
Columbia University

Research output: Contribution to journal › Journal article › peer-review

9 Scopus citations

Abstract

We have demonstrated Improved critical current density, J_c, in YBa₂Cu₃O_7-δ(YBCO) Alms through a controlled study of substrate surface modifications with nano-sized second-phase pre-formed CeO₂ particles. Nanoparticles were applied to single crystal SrTiO₃ surfaces using suspension-based techniques prior to YBCO film growth. With the introduction of CeO₂ nanoparticles, YBCO films showed more robust field dependence at intermediate fields (J_c ∝ B^-α), where a smaller power law exponent of α ∼ 0.3 is obtained. The self-field J_c (77 K, B ∥ c) values of the YBCO films on reference and CeO₂ modified substrates are 1.1 and 1.9 MA/cm²; and at 1 Tesla 0.1 and 0.52 MA/cm², respectively. Consistent with this α-value, angular field dependent J _c and transmission electron microscopy studies indicate the presence of c-axis aligned correlated defects in these modified samples.

Original language	English
Pages (from-to)	3720-3723
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	17
Issue number	2
DOIs	https://doi.org/10.1109/TASC.2007.899492
State	Published - 2007.06

Keywords

Coated conductors
Flux pinning
High temperature superconductivity
Nanoparticles
Surface decoration

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Aytug, T., Paranthaman, M., Gapud, A. A., Kang, S., Varela, M., Martin, P. M., Raitano, J. M., Chan, S. W., Thompson, J. R., & Christen, D. K. (2007). Substrate surface decoration with CeO₂ nanoparticles: An effective method for improving flux pinning in YBa₂Cu ₃O_7-δ films. IEEE Transactions on Applied Superconductivity, 17(2), 3720-3723. https://doi.org/10.1109/TASC.2007.899492

@article{72dfd9f2b191402cb71daefc792afa32,

title = "Substrate surface decoration with CeO2 nanoparticles: An effective method for improving flux pinning in YBa2Cu 3O7-δ films",

abstract = "We have demonstrated Improved critical current density, Jc, in YBa2Cu3O7-δ(YBCO) Alms through a controlled study of substrate surface modifications with nano-sized second-phase pre-formed CeO2 particles. Nanoparticles were applied to single crystal SrTiO3 surfaces using suspension-based techniques prior to YBCO film growth. With the introduction of CeO2 nanoparticles, YBCO films showed more robust field dependence at intermediate fields (Jc ∝ B-α), where a smaller power law exponent of α ∼ 0.3 is obtained. The self-field Jc (77 K, B ∥ c) values of the YBCO films on reference and CeO2 modified substrates are 1.1 and 1.9 MA/cm2; and at 1 Tesla 0.1 and 0.52 MA/cm2, respectively. Consistent with this α-value, angular field dependent J c and transmission electron microscopy studies indicate the presence of c-axis aligned correlated defects in these modified samples.",

keywords = "Coated conductors, Flux pinning, High temperature superconductivity, Nanoparticles, Surface decoration",

author = "T. Aytug and M. Paranthaman and Gapud, \{A. A.\} and S. Kang and M. Varela and Martin, \{P. M.\} and Raitano, \{J. M.\} and Chan, \{S. W.\} and Thompson, \{J. R.\} and Christen, \{D. K.\}",

year = "2007",

month = jun,

doi = "10.1109/TASC.2007.899492",

language = "English",

volume = "17",

pages = "3720--3723",

journal = "IEEE Transactions on Applied Superconductivity",

issn = "1051-8223",

number = "2",

}

Aytug, T, Paranthaman, M, Gapud, AA, Kang, S, Varela, M, Martin, PM, Raitano, JM, Chan, SW, Thompson, JR & Christen, DK 2007, 'Substrate surface decoration with CeO₂ nanoparticles: An effective method for improving flux pinning in YBa₂Cu ₃O_7-δ films', IEEE Transactions on Applied Superconductivity, vol. 17, no. 2, pp. 3720-3723. https://doi.org/10.1109/TASC.2007.899492

TY - JOUR

T1 - Substrate surface decoration with CeO2 nanoparticles

T2 - An effective method for improving flux pinning in YBa2Cu 3O7-δ films

AU - Aytug, T.

AU - Paranthaman, M.

AU - Gapud, A. A.

AU - Kang, S.

AU - Varela, M.

AU - Martin, P. M.

AU - Raitano, J. M.

AU - Chan, S. W.

AU - Thompson, J. R.

AU - Christen, D. K.

PY - 2007/6

Y1 - 2007/6

N2 - We have demonstrated Improved critical current density, Jc, in YBa2Cu3O7-δ(YBCO) Alms through a controlled study of substrate surface modifications with nano-sized second-phase pre-formed CeO2 particles. Nanoparticles were applied to single crystal SrTiO3 surfaces using suspension-based techniques prior to YBCO film growth. With the introduction of CeO2 nanoparticles, YBCO films showed more robust field dependence at intermediate fields (Jc ∝ B-α), where a smaller power law exponent of α ∼ 0.3 is obtained. The self-field Jc (77 K, B ∥ c) values of the YBCO films on reference and CeO2 modified substrates are 1.1 and 1.9 MA/cm2; and at 1 Tesla 0.1 and 0.52 MA/cm2, respectively. Consistent with this α-value, angular field dependent J c and transmission electron microscopy studies indicate the presence of c-axis aligned correlated defects in these modified samples.

AB - We have demonstrated Improved critical current density, Jc, in YBa2Cu3O7-δ(YBCO) Alms through a controlled study of substrate surface modifications with nano-sized second-phase pre-formed CeO2 particles. Nanoparticles were applied to single crystal SrTiO3 surfaces using suspension-based techniques prior to YBCO film growth. With the introduction of CeO2 nanoparticles, YBCO films showed more robust field dependence at intermediate fields (Jc ∝ B-α), where a smaller power law exponent of α ∼ 0.3 is obtained. The self-field Jc (77 K, B ∥ c) values of the YBCO films on reference and CeO2 modified substrates are 1.1 and 1.9 MA/cm2; and at 1 Tesla 0.1 and 0.52 MA/cm2, respectively. Consistent with this α-value, angular field dependent J c and transmission electron microscopy studies indicate the presence of c-axis aligned correlated defects in these modified samples.

KW - Coated conductors

KW - Flux pinning

KW - High temperature superconductivity

KW - Nanoparticles

KW - Surface decoration

UR - https://www.scopus.com/pages/publications/34547399557

U2 - 10.1109/TASC.2007.899492

DO - 10.1109/TASC.2007.899492

M3 - Journal article

AN - SCOPUS:34547399557

SN - 1051-8223

VL - 17

SP - 3720

EP - 3723

JO - IEEE Transactions on Applied Superconductivity

JF - IEEE Transactions on Applied Superconductivity

IS - 2

ER -

Substrate surface decoration with CeO₂ nanoparticles: An effective method for improving flux pinning in YBa₂Cu ₃O_7-δ films

Abstract

Keywords

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