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Title: Ac irreversibility line of bismuth-based high temperature superconductors

Abstract

We discuss the magnetic properties of lead doped Bi-2223 bulk samples obtained through combined magnetic melt texturing and hot pressing (MMTHP). The ac complex susceptibility measurements are achieved over a broad ac field range (1 Oe{lt}h{sub ac}{lt}100 Oe) and show highly anisotropic properties. The intergranular coupling is improved in the direction perpendicular to the applied stress and magnetic field direction, and an intragranular loss peak is observed for the first time. A comparison is made with other bismuth-based compounds and it is shown that the MMTHP process shifts the ac irreversibility line (ac IL) toward higher fields. It is also shown that all the ac IL{close_quote}s for quasi 2D bismuth-based compounds show a nearly quadratic temperature dependence and deviate therefore strongly from the linear behavior observed in quasi 3D compounds and expected from a critical state model.{copyright} {ital 1997 Materials Research Society.}

Authors:
 [1];  [2]; ;  [1]; ;  [3]
  1. Laboratoire de Physique et de Spectroscopie Electronique, URA 1435 Faculte des Sciences, Universite de Haute Alsace 4, rue des Freres Lumiere, 68093 Mulhouse Cedex (France)
  2. Laboratoire Louis Neel, CNRS, BP 166, 38042 Grenoble Cedex 9 (France)
  3. EPM-MATFORMAG, Laboratoire dElaboration par Procede Magnetique, CNRS, BP 166, 38042 Grenoble Cedex 9 (France)
Publication Date:
OSTI Identifier:
544820
Resource Type:
Journal Article
Journal Name:
Journal of Materials Research
Additional Journal Information:
Journal Volume: 12; Journal Issue: 9; Other Information: PBD: Sep 1997
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; HIGH-TC SUPERCONDUCTORS; MAGNETIC PROPERTIES; BISMUTH OXIDES; COPPER OXIDES; LEAD ADDITIONS; TEXTURE; HOT PRESSING; CRITICAL CURRENT; CRITICAL FIELD

Citation Formats

Mehdaoui, A, Beille, J, Berling, D, Loegel, B, Noudem, J G, and Tournier, R. Ac irreversibility line of bismuth-based high temperature superconductors. United States: N. p., 1997. Web. doi:10.1557/JMR.1997.0298.
Mehdaoui, A, Beille, J, Berling, D, Loegel, B, Noudem, J G, & Tournier, R. Ac irreversibility line of bismuth-based high temperature superconductors. United States. https://doi.org/10.1557/JMR.1997.0298
Mehdaoui, A, Beille, J, Berling, D, Loegel, B, Noudem, J G, and Tournier, R. 1997. "Ac irreversibility line of bismuth-based high temperature superconductors". United States. https://doi.org/10.1557/JMR.1997.0298.
@article{osti_544820,
title = {Ac irreversibility line of bismuth-based high temperature superconductors},
author = {Mehdaoui, A and Beille, J and Berling, D and Loegel, B and Noudem, J G and Tournier, R},
abstractNote = {We discuss the magnetic properties of lead doped Bi-2223 bulk samples obtained through combined magnetic melt texturing and hot pressing (MMTHP). The ac complex susceptibility measurements are achieved over a broad ac field range (1 Oe{lt}h{sub ac}{lt}100 Oe) and show highly anisotropic properties. The intergranular coupling is improved in the direction perpendicular to the applied stress and magnetic field direction, and an intragranular loss peak is observed for the first time. A comparison is made with other bismuth-based compounds and it is shown that the MMTHP process shifts the ac irreversibility line (ac IL) toward higher fields. It is also shown that all the ac IL{close_quote}s for quasi 2D bismuth-based compounds show a nearly quadratic temperature dependence and deviate therefore strongly from the linear behavior observed in quasi 3D compounds and expected from a critical state model.{copyright} {ital 1997 Materials Research Society.}},
doi = {10.1557/JMR.1997.0298},
url = {https://www.osti.gov/biblio/544820}, journal = {Journal of Materials Research},
number = 9,
volume = 12,
place = {United States},
year = {1997},
month = {9}
}