Changes in doping state of (Tl, Pb)Sr1212 superconductors with Yb substitution at Sr site

A. K. Yahya, W. F. Abdullah, H. Imad, Mohammad Hafizuddin Jumali

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Samples with nominal starting compositions of Tl0.5Pb0.5Sr2-yYbyCaCu2O7 (y = 0-0.6) were synthesized using conventional solid-state synthesis method. Temperature dependent electrical resistance measurements on the series showed that the normal state behavior and superconducting properties can be controlled by adjusting Yb concentration to achieve maximum critical temperature (Tc). The best superconducting behavior for the series was observed for Tl0.5Pb0.5Sr1.8Yb0.2CaCu2O7 with onset critical temperature (Tc onset) of 105 K. Results of critical temperature (Tc) measurements, microstructure investigation using scanning electron microscope (SEM) and powder X-ray diffraction (XRD) analysis are presented. The effects of Yb substitutions are discussed in terms of Tc, Tl1212 phase formation and the concept of average Cu valence.

Original languageEnglish
Pages (from-to)474-477
Number of pages4
JournalPhysica C: Superconductivity and its Applications
Volume463-465
Issue numberSUPPL.
DOIs
Publication statusPublished - 1 Oct 2007

Fingerprint

Superconducting materials
critical temperature
Substitution reactions
Doping (additives)
substitutes
Acoustic impedance
electrical resistance
Temperature measurement
Temperature
X ray diffraction analysis
temperature measurement
Electron microscopes
electron microscopes
adjusting
solid state
Scanning
valence
Powders
microstructure
Microstructure

Keywords

  • Substitution effects
  • TlSr1212
  • Transition temperature

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Changes in doping state of (Tl, Pb)Sr1212 superconductors with Yb substitution at Sr site. / Yahya, A. K.; Abdullah, W. F.; Imad, H.; Jumali, Mohammad Hafizuddin.

In: Physica C: Superconductivity and its Applications, Vol. 463-465, No. SUPPL., 01.10.2007, p. 474-477.

Research output: Contribution to journalArticle

@article{fbac129f190945a982a38650956dcdd3,
title = "Changes in doping state of (Tl, Pb)Sr1212 superconductors with Yb substitution at Sr site",
abstract = "Samples with nominal starting compositions of Tl0.5Pb0.5Sr2-yYbyCaCu2O7 (y = 0-0.6) were synthesized using conventional solid-state synthesis method. Temperature dependent electrical resistance measurements on the series showed that the normal state behavior and superconducting properties can be controlled by adjusting Yb concentration to achieve maximum critical temperature (Tc). The best superconducting behavior for the series was observed for Tl0.5Pb0.5Sr1.8Yb0.2CaCu2O7 with onset critical temperature (Tc onset) of 105 K. Results of critical temperature (Tc) measurements, microstructure investigation using scanning electron microscope (SEM) and powder X-ray diffraction (XRD) analysis are presented. The effects of Yb substitutions are discussed in terms of Tc, Tl1212 phase formation and the concept of average Cu valence.",
keywords = "Substitution effects, TlSr1212, Transition temperature",
author = "Yahya, {A. K.} and Abdullah, {W. F.} and H. Imad and Jumali, {Mohammad Hafizuddin}",
year = "2007",
month = "10",
day = "1",
doi = "10.1016/j.physc.2007.05.043",
language = "English",
volume = "463-465",
pages = "474--477",
journal = "Physica C: Superconductivity and its Applications",
issn = "0921-4534",
publisher = "Elsevier",
number = "SUPPL.",

}

TY - JOUR

T1 - Changes in doping state of (Tl, Pb)Sr1212 superconductors with Yb substitution at Sr site

AU - Yahya, A. K.

AU - Abdullah, W. F.

AU - Imad, H.

AU - Jumali, Mohammad Hafizuddin

PY - 2007/10/1

Y1 - 2007/10/1

N2 - Samples with nominal starting compositions of Tl0.5Pb0.5Sr2-yYbyCaCu2O7 (y = 0-0.6) were synthesized using conventional solid-state synthesis method. Temperature dependent electrical resistance measurements on the series showed that the normal state behavior and superconducting properties can be controlled by adjusting Yb concentration to achieve maximum critical temperature (Tc). The best superconducting behavior for the series was observed for Tl0.5Pb0.5Sr1.8Yb0.2CaCu2O7 with onset critical temperature (Tc onset) of 105 K. Results of critical temperature (Tc) measurements, microstructure investigation using scanning electron microscope (SEM) and powder X-ray diffraction (XRD) analysis are presented. The effects of Yb substitutions are discussed in terms of Tc, Tl1212 phase formation and the concept of average Cu valence.

AB - Samples with nominal starting compositions of Tl0.5Pb0.5Sr2-yYbyCaCu2O7 (y = 0-0.6) were synthesized using conventional solid-state synthesis method. Temperature dependent electrical resistance measurements on the series showed that the normal state behavior and superconducting properties can be controlled by adjusting Yb concentration to achieve maximum critical temperature (Tc). The best superconducting behavior for the series was observed for Tl0.5Pb0.5Sr1.8Yb0.2CaCu2O7 with onset critical temperature (Tc onset) of 105 K. Results of critical temperature (Tc) measurements, microstructure investigation using scanning electron microscope (SEM) and powder X-ray diffraction (XRD) analysis are presented. The effects of Yb substitutions are discussed in terms of Tc, Tl1212 phase formation and the concept of average Cu valence.

KW - Substitution effects

KW - TlSr1212

KW - Transition temperature

UR - http://www.scopus.com/inward/record.url?scp=34548378670&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34548378670&partnerID=8YFLogxK

U2 - 10.1016/j.physc.2007.05.043

DO - 10.1016/j.physc.2007.05.043

M3 - Article

AN - SCOPUS:34548378670

VL - 463-465

SP - 474

EP - 477

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

SN - 0921-4534

IS - SUPPL.

ER -