Effect of alkali metal Na on the formation and superconductivity of Tl-1212-type phase (Tl 0.85 Cr 0.15 )Sr 2−x Na x CaCu 2 O 7

J. Nur-Akasyah, K. Muhammad-Aizat, Nurul Raihan Mohd-Suib, Roslan Abd. Shukor

Research output: Contribution to journalArticle

Abstract

The effect of Na substitution on the formation and superconductivity of Tl-1212-type phase (Tl 0.85 Cr 0.15 )Sr 2−x Na x CaCu 2 O 7 (x = 0–0.30) is reported. The samples were prepared via the solid-state reaction method. X-ray diffraction patterns showed the presence of Tl-1212-type phase or Ca 0.3 Sr 0.7 CuO 2 (CSCO) as a major or minor phase in the samples. The resistance versus temperature curves showed onset transition temperature, T c-onset between 97 and 106 K and zero-resistance temperature, T c-zero between 88 and 99 K. AC susceptibility measurement showed superconducting transition Tcχ′ between 89 and 98 K. The peak temperature, T p, of the imaginary part of the susceptibility, χ″, was the highest for x = 0.02 sample (T p = 96 K). The inter-grain critical current density, J c, at T p for x = 0 sample was J c (T p = 68 K) = 14 A cm −2 and for x = 0.02, 0.20 and 0.30 J c (T p ) at 96, 96, and 88 K, respectively, is 19 A cm −2 . Na substitution increased the grain size of the Tl-1212 samples. All Na-substituted samples showed higher transition temperature, enhanced critical current density, and improved inter-grain coupling compared with the non-substituted sample. This work showed that other than rare-earth elements, monovalent alkali metal such as Na could also be used to enhance the superconducting properties of the Tl-1212 phase.

Original languageEnglish
Article number202
JournalApplied Physics A: Materials Science and Processing
Volume125
Issue number3
DOIs
Publication statusPublished - 1 Mar 2019

Fingerprint

Alkali Metals
Alkali metals
Superconductivity
Superconducting transition temperature
Substitution reactions
Critical current density (superconductivity)
Rare earth elements
Solid state reactions
Temperature
Diffraction patterns
X ray diffraction

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)

Cite this

Effect of alkali metal Na on the formation and superconductivity of Tl-1212-type phase (Tl 0.85 Cr 0.15 )Sr 2−x Na x CaCu 2 O 7 . / Nur-Akasyah, J.; Muhammad-Aizat, K.; Mohd-Suib, Nurul Raihan; Abd. Shukor, Roslan.

In: Applied Physics A: Materials Science and Processing, Vol. 125, No. 3, 202, 01.03.2019.

Research output: Contribution to journalArticle

@article{4da88e892d2a434f95150d729865cdd1,
title = "Effect of alkali metal Na on the formation and superconductivity of Tl-1212-type phase (Tl 0.85 Cr 0.15 )Sr 2−x Na x CaCu 2 O 7",
abstract = "The effect of Na substitution on the formation and superconductivity of Tl-1212-type phase (Tl 0.85 Cr 0.15 )Sr 2−x Na x CaCu 2 O 7 (x = 0–0.30) is reported. The samples were prepared via the solid-state reaction method. X-ray diffraction patterns showed the presence of Tl-1212-type phase or Ca 0.3 Sr 0.7 CuO 2 (CSCO) as a major or minor phase in the samples. The resistance versus temperature curves showed onset transition temperature, T c-onset between 97 and 106 K and zero-resistance temperature, T c-zero between 88 and 99 K. AC susceptibility measurement showed superconducting transition Tcχ′ between 89 and 98 K. The peak temperature, T p, of the imaginary part of the susceptibility, χ″, was the highest for x = 0.02 sample (T p = 96 K). The inter-grain critical current density, J c, at T p for x = 0 sample was J c (T p = 68 K) = 14 A cm −2 and for x = 0.02, 0.20 and 0.30 J c (T p ) at 96, 96, and 88 K, respectively, is 19 A cm −2 . Na substitution increased the grain size of the Tl-1212 samples. All Na-substituted samples showed higher transition temperature, enhanced critical current density, and improved inter-grain coupling compared with the non-substituted sample. This work showed that other than rare-earth elements, monovalent alkali metal such as Na could also be used to enhance the superconducting properties of the Tl-1212 phase.",
author = "J. Nur-Akasyah and K. Muhammad-Aizat and Mohd-Suib, {Nurul Raihan} and {Abd. Shukor}, Roslan",
year = "2019",
month = "3",
day = "1",
doi = "10.1007/s00339-019-2502-3",
language = "English",
volume = "125",
journal = "Applied Physics",
issn = "0340-3793",
publisher = "Springer Heidelberg",
number = "3",

}

TY - JOUR

T1 - Effect of alkali metal Na on the formation and superconductivity of Tl-1212-type phase (Tl 0.85 Cr 0.15 )Sr 2−x Na x CaCu 2 O 7

AU - Nur-Akasyah, J.

AU - Muhammad-Aizat, K.

AU - Mohd-Suib, Nurul Raihan

AU - Abd. Shukor, Roslan

PY - 2019/3/1

Y1 - 2019/3/1

N2 - The effect of Na substitution on the formation and superconductivity of Tl-1212-type phase (Tl 0.85 Cr 0.15 )Sr 2−x Na x CaCu 2 O 7 (x = 0–0.30) is reported. The samples were prepared via the solid-state reaction method. X-ray diffraction patterns showed the presence of Tl-1212-type phase or Ca 0.3 Sr 0.7 CuO 2 (CSCO) as a major or minor phase in the samples. The resistance versus temperature curves showed onset transition temperature, T c-onset between 97 and 106 K and zero-resistance temperature, T c-zero between 88 and 99 K. AC susceptibility measurement showed superconducting transition Tcχ′ between 89 and 98 K. The peak temperature, T p, of the imaginary part of the susceptibility, χ″, was the highest for x = 0.02 sample (T p = 96 K). The inter-grain critical current density, J c, at T p for x = 0 sample was J c (T p = 68 K) = 14 A cm −2 and for x = 0.02, 0.20 and 0.30 J c (T p ) at 96, 96, and 88 K, respectively, is 19 A cm −2 . Na substitution increased the grain size of the Tl-1212 samples. All Na-substituted samples showed higher transition temperature, enhanced critical current density, and improved inter-grain coupling compared with the non-substituted sample. This work showed that other than rare-earth elements, monovalent alkali metal such as Na could also be used to enhance the superconducting properties of the Tl-1212 phase.

AB - The effect of Na substitution on the formation and superconductivity of Tl-1212-type phase (Tl 0.85 Cr 0.15 )Sr 2−x Na x CaCu 2 O 7 (x = 0–0.30) is reported. The samples were prepared via the solid-state reaction method. X-ray diffraction patterns showed the presence of Tl-1212-type phase or Ca 0.3 Sr 0.7 CuO 2 (CSCO) as a major or minor phase in the samples. The resistance versus temperature curves showed onset transition temperature, T c-onset between 97 and 106 K and zero-resistance temperature, T c-zero between 88 and 99 K. AC susceptibility measurement showed superconducting transition Tcχ′ between 89 and 98 K. The peak temperature, T p, of the imaginary part of the susceptibility, χ″, was the highest for x = 0.02 sample (T p = 96 K). The inter-grain critical current density, J c, at T p for x = 0 sample was J c (T p = 68 K) = 14 A cm −2 and for x = 0.02, 0.20 and 0.30 J c (T p ) at 96, 96, and 88 K, respectively, is 19 A cm −2 . Na substitution increased the grain size of the Tl-1212 samples. All Na-substituted samples showed higher transition temperature, enhanced critical current density, and improved inter-grain coupling compared with the non-substituted sample. This work showed that other than rare-earth elements, monovalent alkali metal such as Na could also be used to enhance the superconducting properties of the Tl-1212 phase.

UR - http://www.scopus.com/inward/record.url?scp=85061968669&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85061968669&partnerID=8YFLogxK

U2 - 10.1007/s00339-019-2502-3

DO - 10.1007/s00339-019-2502-3

M3 - Article

AN - SCOPUS:85061968669

VL - 125

JO - Applied Physics

JF - Applied Physics

SN - 0340-3793

IS - 3

M1 - 202

ER -