Aging effects and passivation studies on undoped and Ag-doped YBa[sub 2]Cu[sub 3]O[sub 7[minus]x] laser ablated thin films

doi:https://doi.org/10.1149/1.2054970

Title: Aging effects and passivation studies on undoped and Ag-doped YBa[sub 2]Cu[sub 3]O[sub 7[minus]x] laser ablated thin films

Full Record
Other Related Research

Abstract

The authors have examined the chemical stability of undoped and 5 weight percent Ag-doped YBa[sub 2]Cu[sub 3]O[sub 7[minus]x] thin films, both grown in situ by pulsed laser deposition technique. The studies indicate that Ag-doped films are more stable than undoped films. The improved chemical stability of Ag-doped films has been attributed to reduction in the effective area of intergranular regions and the presence of passivating silver clusters around grains. The study has also shown that coating the YBa[sub 2]Cu[sub 3]O[sub 7[minus]x] film surface with noble metals like Ag and Au results in passivation of YBa[sub 2]Cu[sub 3]O[sub 7[minus]x] films.

Authors:

Kumar, D; Sharon, M ^[1]; Apte, P R; Pinto, R; Gupta, L C ^[2]

Indian Inst. of Tech., Bombay (India). Dept. of Chemistry
Tata Inst. of Fundamental Research, Bombay (India)

Publication Date:: 1994-06-01

OSTI Identifier:: 7148982

Resource Type:: Journal Article

Journal Name:: Journal of the Electrochemical Society; (United States)

Additional Journal Information:: Journal Volume: 141:6; Journal ID: ISSN 0013-4651

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; BARIUM OXIDES; PASSIVATION; COPPER OXIDES; HIGH-TC SUPERCONDUCTORS; YTTRIUM OXIDES; DOPED MATERIALS; SILVER; SUPERCONDUCTING FILMS; SURFACE COATING; ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; DEPOSITION; ELEMENTS; FILMS; MATERIALS; METALS; OXIDES; OXYGEN COMPOUNDS; SUPERCONDUCTORS; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS; YTTRIUM COMPOUNDS; 360205* - Ceramics, Cermets, & Refractories- Corrosion & Erosion

Citation Formats


                    Kumar, D, Sharon, M, Apte, P R, Pinto, R, and Gupta, L C. Aging effects and passivation studies on undoped and Ag-doped YBa[sub 2]Cu[sub 3]O[sub 7[minus]x] laser ablated thin films.  United States: N. p., 1994. 
        Web.  doi:10.1149/1.2054970.

Copy to clipboard


                    Kumar, D, Sharon, M, Apte, P R, Pinto, R, & Gupta, L C. Aging effects and passivation studies on undoped and Ag-doped YBa[sub 2]Cu[sub 3]O[sub 7[minus]x] laser ablated thin films.  United States.  https://doi.org/10.1149/1.2054970

Copy to clipboard


                    Kumar, D, Sharon, M, Apte, P R, Pinto, R, and Gupta, L C. Wed .  
        "Aging effects and passivation studies on undoped and Ag-doped YBa[sub 2]Cu[sub 3]O[sub 7[minus]x] laser ablated thin films".  United States.  https://doi.org/10.1149/1.2054970.

Copy to clipboard


                    
@article{osti_7148982,

  title        = {Aging effects and passivation studies on undoped and Ag-doped YBa[sub 2]Cu[sub 3]O[sub 7[minus]x] laser ablated thin films},

  author       = {Kumar, D and Sharon, M and Apte, P R and Pinto, R and Gupta, L C},

  abstractNote = {The authors have examined the chemical stability of undoped and 5 weight percent Ag-doped YBa[sub 2]Cu[sub 3]O[sub 7[minus]x] thin films, both grown in situ by pulsed laser deposition technique. The studies indicate that Ag-doped films are more stable than undoped films. The improved chemical stability of Ag-doped films has been attributed to reduction in the effective area of intergranular regions and the presence of passivating silver clusters around grains. The study has also shown that coating the YBa[sub 2]Cu[sub 3]O[sub 7[minus]x] film surface with noble metals like Ag and Au results in passivation of YBa[sub 2]Cu[sub 3]O[sub 7[minus]x] films.},

  doi          = {10.1149/1.2054970},

  url          = {https://www.osti.gov/biblio/7148982},
  journal      = {Journal of the Electrochemical Society; (United States)},

  issn         = {0013-4651},

  number       = ,

  volume       = 141:6,

  place        = {United States},

  year         = {1994},

  month        = {6}

}

Copy to clipboard

Journal Article:

https://doi.org/10.1149/1.2054970

Other availability

Find in Google Scholar

Search WorldCat to find libraries that may hold this journal

Save / Share:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

Enhanced J{sub c} and improved grain-boundary properties in Ag-doped YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} films

Journal Article Selvam, P ; Seibt, E W ; Kumar, D ; ... - Applied Physics Letters

A large increase ({approximately}8{times}) in critical current density, J{sub c}, was achieved for {ital in situ} laser ablated YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}}{endash}Ag films. High-resolution Auger electron spectroscopic investigation indicates that the Ag-doped films are stoichiometric with a relatively low grain-boundary extension (8 nm) in contrast to undoped YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} films (32 nm). Further analysis suggests that the doped film contains a much lower silver content ({lt}0.15wt{percent}) than in the target material (5 wt{percent}). These observations are in excellent agreement with the temperature dependence of J{sub c}, the room-temperature resistivity, and the surface resistance results. Thus, J{sub c} enhancementmore »« less
https://doi.org/10.1063/1.119452
Growth of YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}}{endash}Ag thin films ({ital T}{sub {ital c}(0)}=89 K) by pulsed laser ablation on polycrystalline Ba{sub 2}LaNbO{sub 6}: A new perovskite ceramic substrate

Journal Article Kurian, J ; Varma, H K ; Koshy, J ; ... - Applied Physics Letters

Synthesis and characterization of Ba{sub 2}LaNbO{sub 6} which is a new substrate material for YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} superconductor are reported. Ba{sub 2}LaNbO{sub 6} has a complex cubic perovskite structure (A{sub 2}BB{prime}O{sub 6}) with a lattice constant {ital a}=8.60 A. No detectable chemical reaction between YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} and Ba{sub 2}LaNbO{sub 6} was observed even under severe heat treatment. The dielectric constant and loss factor of Ba{sub 2}LaNbO{sub 6} are in a range suitable for its use as a substrate for microwave applications. Superconducting YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}}{endash}Ag thin films are grown {ital in} {ital situ} on polycrystalline Ba{submore »« less
https://doi.org/10.1063/1.117320
Characterization of the Ag/YBa sub 2 Cu sub 3 O sub 7 minus x contact in thin films

Journal Article Jia, Q X ; Anderson, W A ; Zheng, J P ; ... - Journal of Applied Physics; (USA)

Silver (Ag) contacts to very thin superconducting YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}} films were prepared by thermal evaporation. The nature of the Ag/YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}} contact during thermal treatment was {ital in} {ital situ} investigated by a combination of three- and four-terminal resistance measurements. The experimental results suggested that the interaction between Ag and the YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}} film began at a temperature of around 370 {degree}C. The contact resistance measurement for different films also demonstrated that the contact property was a strong function of the film quality and surface conditions. The lack of reproducibility inmore »« less
https://doi.org/10.1063/1.346878
Improvement in the properties of high T sub c films fabricated in situ by laser ablation of YBa sub 2 Cu sub 3 O sub 7 -Ag targets

Journal Article Singh, R K ; Bhattacharya, D ; Tiwari, P ; ... - Applied Physics Letters; (United States)

We have studied the microstructural and superconducting properties of YBa{sub 2}Cu{sub 3}O{sub 7} films fabricated by pulsed laser evaporation of YBa{sub 2}Cu{sub 3}O{sub 7}-Ag targets, containing approximately 30% by weight of silver. The films produced by excimer laser evaporation/ablation of YBa{sub 2}Cu{sub 3}O{sub 7}-Ag targets were found to possess better superconducting and microstructural properties than films prepared under the same conditions from bulk YBa{sub 2}Cu{sub 3}O{sub 7} targets. YBa{sub 2}Cu{sub 3}O{sub 7} films deposited on yttria stabilized zirconia (YSZ) substrates from YBa{sub 2}Cu{sub 3}O{sub 7}-Ag targets at 650 {degree}C showed helium ion channeling yields of approximately 9%--12%, while films depositedmore »« less
https://doi.org/10.1063/1.106954
Magnetic penetration depth in Ni- and Zn-doped YBa{sub 2}(Cu{sub 1{minus}{ital x}}{ital M}{sub {ital x}}){sub 3}O{sub 7} films

Journal Article Ulm, E R ; Kim, J ; Lemberger, T R ; ... - Physical Review, B: Condensed Matter

The penetration depth {lambda}({ital T}) in YBa{sub 2}(Cu{sub 1{minus}{ital x}}{ital M}{sub {ital x}}){sub 3}O{sub 7} films, with {ital M}=Ni or Zn and nominal concentrations, 0.02{le}{ital x}{le}0.06, is obtained from the mutual inductance of coaxial coils on opposite sides of the films. Both Ni and Zn increase {lambda}(0) very rapidly, such that the superfluid density, {ital n}{sub {ital s}}(0){proportional_to}{lambda}{sup {minus}2}(0), decreases by a factor of 2 for each percent of dopant. The rapid increase in {lambda}(0) implies that disorder fills in the superconducting density of states at low energy, so that {ital N}{sub {ital S}}(0) is roughly 80--95 % of themore »« less
https://doi.org/10.1103/PhysRevB.51.9193

Similar Records