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Single Crystal Growth and Characterization of Thallium Cuprate Superconductors — A Review

Hermann, A. M. / Paranthaman, M. / Duan, H. M.

Abstract We review the single crystal growth and characterization of thallium cuprate superconductors. Reasonably large crystals (several mm size) have been grown by self-flux technique and KCl-flux methods. The anisotropic resistivities Pab (along ab-plane) and Pc (along c-axis) were measured for all double-Tl-O compounds by Montgomery method. Pc is found to be 2 orders of magnitude greater than Pab for all of these samples. Hence, these systems have high anisotropy. The paraconductivity data shows that Tl-2201 is a two-dimensional superconductor whereas Tl-2212 has a two-dimensional behavior at higher temperatures and some samples showed crossover from two-dimensional to three-dimensional at 6 degrees above Tc of 101 K. Hall data, annealing effects on different Tl systems, irradiation effects and pressure dependence of Tc are reported.

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Single Crystal Growth and Characterization of Thallium Cuprate Superconductors — A Review

Hermann, A. M. / Paranthaman, M. / Duan, H. M.

Abstract We review the single crystal growth and characterization of thallium cuprate superconductors. Reasonably large crystals (several mm size) have been grown by self-flux technique and KCl-flux methods. The anisotropic resistivities Pab (along ab-plane) and Pc (along c-axis) were measured for all double-Tl-O compounds by Montgomery method. Pc is found to be 2 orders of magnitude greater than Pab for all of these samples. Hence, these systems have high anisotropy. The paraconductivity data shows that Tl-2201 is a two-dimensional superconductor whereas Tl-2212 has a two-dimensional behavior at higher temperatures and some samples showed crossover from two-dimensional to three-dimensional at 6 degrees above Tc of 101 K. Hall data, annealing effects on different Tl systems, irradiation effects and pressure dependence of Tc are reported.

Single Crystal Growth and Characterization of Thallium Cuprate Superconductors — A Review

Hermann, A. M. / Paranthaman, M. / Duan, H. M.

Abstract We review the single crystal growth and characterization of thallium cuprate superconductors. Reasonably large crystals (several mm size) have been grown by self-flux technique and KCl-flux methods. The anisotropic resistivities Pab (along ab-plane) and Pc (along c-axis) were measured for all double-Tl-O compounds by Montgomery method. Pc is found to be 2 orders of magnitude greater than Pab for all of these samples. Hence, these systems have high anisotropy. The paraconductivity data shows that Tl-2201 is a two-dimensional superconductor whereas Tl-2212 has a two-dimensional behavior at higher temperatures and some samples showed crossover from two-dimensional to three-dimensional at 6 degrees above Tc of 101 K. Hall data, annealing effects on different Tl systems, irradiation effects and pressure dependence of Tc are reported.

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Title:

Single Crystal Growth and Characterization of Thallium Cuprate Superconductors — A Review

Contributors:

Hermann, A. M. (author) / Paranthaman, M. (author) / Duan, H. M. (author)

Published in:

Materials and Crystallographic Aspects of HTc-Superconductivity ; 373-398

NATO ASI Series ; 263

Publication date:

1994-01-01

Size:

26 pages

ISBN:

978-94-010-4463-9 , 978-94-011-1064-8

ISSN:

DOI:

https://doi.org/10.1007/978-94-011-1064-8_19

Type of media:

Article/Chapter (Book)

Type of material:

Electronic Resource

Language:

English

Keywords:

Large Crystal , Single Crystal Growth , Flux Method , Transport Property Measurement , Gold Crucible Engineering , Electronics and Microelectronics, Instrumentation , Characterization and Evaluation of Materials , Crystallography , Condensed Matter Physics

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