High-quality YBa2Cu3O7/insulator/LaNiO3 trilayers obtained by pulsed laser deposition

F. Sánchez; M. V. García-Cuenca; N. Domingo; C. Ferrater; M. Varela

doi:10.1016/S0042-207X(01)00312-8

High-quality YBa₂Cu₃O₇/insulator/LaNiO₃ trilayers obtained by pulsed laser deposition

F. Sánchez, M. V. García-Cuenca, N. Domingo, C. Ferrater, M. Varela

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

YBa₂Cu₃O₇/Insulator/LaNiO₃ (YBCO/I/LNO) epitaxial trilayers were produced by pulsed laser deposition on LaAlO₃(1 0 0) and SrTiO₃(1 0 0) substrates. The processing conditions of the three films were optimised in order to obtain a high-quality epitaxy and to ensure that the surface of the two bottom layers had very low roughness and a low number of droplets. The use of SrTiO₃ and CeO₂ as insulating materials was investigated. All the deposited films were single oriented and epitaxial, with 0.1-0.8° wide rocking curves, depending on the material. The surface of the LNO and the insulator layers was flat, with roughness 1-2nm, and with a low droplet density (10⁵ cm^-2). The LNO layer had a low electrical resistivity of a few hundred of μΩcm, whereas the top YBCO layers presented good superconducting properties (critical temperature close to 85K and a critical current density of 10⁶ A/cm² at a temperature near to 77K).

Original language	English
Pages (from-to)	337-341
Number of pages	5
Journal	Vacuum
Volume	64
Issue number	3-4
DOIs	https://doi.org/10.1016/S0042-207X(01)00312-8
State	Published - Jan 2002
Externally published	Yes

Funding

Financial support by the CICYT of the Spanish Government (Project MAT99-0984) is gratefully acknowledged.

Funders	Funder number
Comisión Interministerial de Ciencia y Tecnología	MAT99-0984

Keywords

Epitaxial oxide thin films
Heterostructures
Pulsed laser deposition
Superconductors

Access to Document

10.1016/S0042-207X(01)00312-8

Cite this

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title = "High-quality YBa2Cu3O7/insulator/LaNiO3 trilayers obtained by pulsed laser deposition",

abstract = "YBa2Cu3O7/Insulator/LaNiO3 (YBCO/I/LNO) epitaxial trilayers were produced by pulsed laser deposition on LaAlO3(1 0 0) and SrTiO3(1 0 0) substrates. The processing conditions of the three films were optimised in order to obtain a high-quality epitaxy and to ensure that the surface of the two bottom layers had very low roughness and a low number of droplets. The use of SrTiO3 and CeO2 as insulating materials was investigated. All the deposited films were single oriented and epitaxial, with 0.1-0.8° wide rocking curves, depending on the material. The surface of the LNO and the insulator layers was flat, with roughness 1-2nm, and with a low droplet density (105 cm-2). The LNO layer had a low electrical resistivity of a few hundred of μΩcm, whereas the top YBCO layers presented good superconducting properties (critical temperature close to 85K and a critical current density of 106 A/cm2 at a temperature near to 77K).",

keywords = "Epitaxial oxide thin films, Heterostructures, Pulsed laser deposition, Superconductors",

author = "F. S{\'a}nchez and Garc{\'i}a-Cuenca, {M. V.} and N. Domingo and C. Ferrater and M. Varela",

year = "2002",

month = jan,

doi = "10.1016/S0042-207X(01)00312-8",

language = "English",

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pages = "337--341",

journal = "Vacuum",

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T1 - High-quality YBa2Cu3O7/insulator/LaNiO3 trilayers obtained by pulsed laser deposition

AU - Sánchez, F.

AU - García-Cuenca, M. V.

AU - Domingo, N.

AU - Ferrater, C.

AU - Varela, M.

PY - 2002/1

Y1 - 2002/1

N2 - YBa2Cu3O7/Insulator/LaNiO3 (YBCO/I/LNO) epitaxial trilayers were produced by pulsed laser deposition on LaAlO3(1 0 0) and SrTiO3(1 0 0) substrates. The processing conditions of the three films were optimised in order to obtain a high-quality epitaxy and to ensure that the surface of the two bottom layers had very low roughness and a low number of droplets. The use of SrTiO3 and CeO2 as insulating materials was investigated. All the deposited films were single oriented and epitaxial, with 0.1-0.8° wide rocking curves, depending on the material. The surface of the LNO and the insulator layers was flat, with roughness 1-2nm, and with a low droplet density (105 cm-2). The LNO layer had a low electrical resistivity of a few hundred of μΩcm, whereas the top YBCO layers presented good superconducting properties (critical temperature close to 85K and a critical current density of 106 A/cm2 at a temperature near to 77K).

AB - YBa2Cu3O7/Insulator/LaNiO3 (YBCO/I/LNO) epitaxial trilayers were produced by pulsed laser deposition on LaAlO3(1 0 0) and SrTiO3(1 0 0) substrates. The processing conditions of the three films were optimised in order to obtain a high-quality epitaxy and to ensure that the surface of the two bottom layers had very low roughness and a low number of droplets. The use of SrTiO3 and CeO2 as insulating materials was investigated. All the deposited films were single oriented and epitaxial, with 0.1-0.8° wide rocking curves, depending on the material. The surface of the LNO and the insulator layers was flat, with roughness 1-2nm, and with a low droplet density (105 cm-2). The LNO layer had a low electrical resistivity of a few hundred of μΩcm, whereas the top YBCO layers presented good superconducting properties (critical temperature close to 85K and a critical current density of 106 A/cm2 at a temperature near to 77K).

KW - Epitaxial oxide thin films

KW - Heterostructures

KW - Pulsed laser deposition

KW - Superconductors

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