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Title: Influence of Oxygen on the Tribomechanical Properties of Single Crystals of YBa{sub 2}Cu{sub 3}O{sub 7−δ}

Abstract

This paper reports a study on the mechanical and tribological properties of ab- and a (b) c−planes of YBa{sub 2}Cu{sub 3}O{sub 7−δ} single crystals. The single crystals were grown using a CuO-BaO self-flux method. The oxygenation effect on the mechanical and tribological properties of ab- and a (b) c−planes is reported. For the ab- plane, the hardness and elastic modulus were around 6 and 50 GPa, respectively. In this case, significant differences were not observed among the hardness and elastic modulus at different oxygenation states. However, the hardness and elastic modulus for as-grown and oxygenated YBa{sub 2}Cu{sub 3}O{sub 7−δ} single crystals were different from that of the a (b) c−plane, and were observed to be slightly higher for the as-grown than for the oxygenated samples. For as-grown and oxygenated samples, we observed hardness values around 4.7 and 2.0 GPa, respectively. Regarding the elastic modulus, the values were 75 and 40 GPa, respectively. The indentation fracture toughness values on the ab- plane for the as-grown and oxygenated YBa{sub 2}Cu{sub 3}O{sub 7−δ} single crystal were 3.7 ± 1.2 and 2.9 ± 1.2 MPa m{sup 1/2}, respectively. For the ab- plane, the scratch resistance of the as-grown sample was higher than that ofmore » the oxygenated sample and the scratches under load were deeper for the oxygenated sample. As regards the a (b) c−plane, the scar features were seemingly constant through all the scratch lengths and the scratches under load were deeper and larger for the oxygenated than that for the as-grown sample.« less

Authors:
; ; ; ; ; ; ;  [1]
  1. State University of Ponta Grossa, Physics Department (Brazil)
Publication Date:
OSTI Identifier:
22773873
Resource Type:
Journal Article
Journal Name:
Journal of Superconductivity and Novel Magnetism
Additional Journal Information:
Journal Volume: 31; Journal Issue: 8; Other Information: Copyright (c) 2018 Springer Science+Business Media, LLC, part of Springer Nature; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1557-1939
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BARIUM OXIDES; COPPER OXIDES; CUPRATES; ELASTICITY; FRACTURE PROPERTIES; HARDNESS; HIGH-TC SUPERCONDUCTORS; MONOCRYSTALS; OXYGEN; PRESSURE RANGE GIGA PA; PRESSURE RANGE MEGA PA; TRIBOLOGY; YTTRIUM COMPOUNDS

Citation Formats

Silva, Simone Aparecida da, Leite Gusmão Pinheiro, Lincoln Brum de, Opata, Yuri Aparecido, Monteiro, João Frederico Haas Leandro, E-mail: jfhlmonteiro@hotmail.com, Serbena, Francisco Carlos, Souza, Gelson Biscaia de, Siqueira, Ezequiel Costa, and Jurelo, Alcione Roberto. Influence of Oxygen on the Tribomechanical Properties of Single Crystals of YBa{sub 2}Cu{sub 3}O{sub 7−δ}. United States: N. p., 2018. Web. doi:10.1007/S10948-017-4526-2.
Silva, Simone Aparecida da, Leite Gusmão Pinheiro, Lincoln Brum de, Opata, Yuri Aparecido, Monteiro, João Frederico Haas Leandro, E-mail: jfhlmonteiro@hotmail.com, Serbena, Francisco Carlos, Souza, Gelson Biscaia de, Siqueira, Ezequiel Costa, & Jurelo, Alcione Roberto. Influence of Oxygen on the Tribomechanical Properties of Single Crystals of YBa{sub 2}Cu{sub 3}O{sub 7−δ}. United States. doi:10.1007/S10948-017-4526-2.
Silva, Simone Aparecida da, Leite Gusmão Pinheiro, Lincoln Brum de, Opata, Yuri Aparecido, Monteiro, João Frederico Haas Leandro, E-mail: jfhlmonteiro@hotmail.com, Serbena, Francisco Carlos, Souza, Gelson Biscaia de, Siqueira, Ezequiel Costa, and Jurelo, Alcione Roberto. Wed . "Influence of Oxygen on the Tribomechanical Properties of Single Crystals of YBa{sub 2}Cu{sub 3}O{sub 7−δ}". United States. doi:10.1007/S10948-017-4526-2.
@article{osti_22773873,
title = {Influence of Oxygen on the Tribomechanical Properties of Single Crystals of YBa{sub 2}Cu{sub 3}O{sub 7−δ}},
author = {Silva, Simone Aparecida da and Leite Gusmão Pinheiro, Lincoln Brum de and Opata, Yuri Aparecido and Monteiro, João Frederico Haas Leandro, E-mail: jfhlmonteiro@hotmail.com and Serbena, Francisco Carlos and Souza, Gelson Biscaia de and Siqueira, Ezequiel Costa and Jurelo, Alcione Roberto},
abstractNote = {This paper reports a study on the mechanical and tribological properties of ab- and a (b) c−planes of YBa{sub 2}Cu{sub 3}O{sub 7−δ} single crystals. The single crystals were grown using a CuO-BaO self-flux method. The oxygenation effect on the mechanical and tribological properties of ab- and a (b) c−planes is reported. For the ab- plane, the hardness and elastic modulus were around 6 and 50 GPa, respectively. In this case, significant differences were not observed among the hardness and elastic modulus at different oxygenation states. However, the hardness and elastic modulus for as-grown and oxygenated YBa{sub 2}Cu{sub 3}O{sub 7−δ} single crystals were different from that of the a (b) c−plane, and were observed to be slightly higher for the as-grown than for the oxygenated samples. For as-grown and oxygenated samples, we observed hardness values around 4.7 and 2.0 GPa, respectively. Regarding the elastic modulus, the values were 75 and 40 GPa, respectively. The indentation fracture toughness values on the ab- plane for the as-grown and oxygenated YBa{sub 2}Cu{sub 3}O{sub 7−δ} single crystal were 3.7 ± 1.2 and 2.9 ± 1.2 MPa m{sup 1/2}, respectively. For the ab- plane, the scratch resistance of the as-grown sample was higher than that of the oxygenated sample and the scratches under load were deeper for the oxygenated sample. As regards the a (b) c−plane, the scar features were seemingly constant through all the scratch lengths and the scratches under load were deeper and larger for the oxygenated than that for the as-grown sample.},
doi = {10.1007/S10948-017-4526-2},
journal = {Journal of Superconductivity and Novel Magnetism},
issn = {1557-1939},
number = 8,
volume = 31,
place = {United States},
year = {2018},
month = {8}
}