AC susceptibility and microstructure of alkali doped polycrystalline YBCO HTSC materials

A. Veneva, D. K. Petrov, P. Dittrich, M. J. Naughton

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

In this work we report experimental results concerning the influence of potassium and excess copper additions on the AC complex susceptibility and microstructural development within polycrystalline YBCO high-temperature superconductors with nominal composition Y1-0.2xBa2-0.2xKxCu3Oy (x = 0-1.20). The real (X′) and the imaginary (X″) parts of the complex magnetic susceptibility of YBCO were recorded as a function of the temperature at various magnetic fields up to 10 Oe. From these data the intergranular critical current densities were calculated using Bean's critical state model. A proper concentration x, which is approximately equal to x = 0.40 in the initial Y1-0.2xBa2-0.2xKxCu3Oy batch was found to improve the Josephson coupling between the grains.

Original languageEnglish
Pages (from-to)230-234
Number of pages5
JournalPhysica C: Superconductivity and its applications
Volume271
Issue number3-4
DOIs
Publication statusPublished - 1996 Nov 10
Externally publishedYes

Fingerprint

High temperature superconductors
Alkalies
Magnetic susceptibility
high temperature superconductors
Potassium
Copper
alkalies
alternating current
Magnetic fields
magnetic permeability
YBCO superconductors
microstructure
Microstructure
Chemical analysis
critical current
potassium
current density
copper
Temperature
magnetic fields

Keywords

  • AC susceptibility of superconductors
  • Critical current density
  • Grain boundaries
  • Microstructure
  • Substitution effects
  • Weak links

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Cite this

AC susceptibility and microstructure of alkali doped polycrystalline YBCO HTSC materials. / Veneva, A.; Petrov, D. K.; Dittrich, P.; Naughton, M. J.

In: Physica C: Superconductivity and its applications, Vol. 271, No. 3-4, 10.11.1996, p. 230-234.

Research output: Contribution to journalArticle

Veneva, A. ; Petrov, D. K. ; Dittrich, P. ; Naughton, M. J. / AC susceptibility and microstructure of alkali doped polycrystalline YBCO HTSC materials. In: Physica C: Superconductivity and its applications. 1996 ; Vol. 271, No. 3-4. pp. 230-234.
@article{c2ea628e9a5f436788e01606aebf8696,
title = "AC susceptibility and microstructure of alkali doped polycrystalline YBCO HTSC materials",
abstract = "In this work we report experimental results concerning the influence of potassium and excess copper additions on the AC complex susceptibility and microstructural development within polycrystalline YBCO high-temperature superconductors with nominal composition Y1-0.2xBa2-0.2xKxCu3Oy (x = 0-1.20). The real (X′) and the imaginary (X″) parts of the complex magnetic susceptibility of YBCO were recorded as a function of the temperature at various magnetic fields up to 10 Oe. From these data the intergranular critical current densities were calculated using Bean's critical state model. A proper concentration x, which is approximately equal to x = 0.40 in the initial Y1-0.2xBa2-0.2xKxCu3Oy batch was found to improve the Josephson coupling between the grains.",
keywords = "AC susceptibility of superconductors, Critical current density, Grain boundaries, Microstructure, Substitution effects, Weak links",
author = "A. Veneva and Petrov, {D. K.} and P. Dittrich and Naughton, {M. J.}",
year = "1996",
month = "11",
day = "10",
doi = "10.1016/S0921-4534(96)00560-6",
language = "English",
volume = "271",
pages = "230--234",
journal = "Physica C: Superconductivity and its Applications",
issn = "0921-4534",
publisher = "Elsevier",
number = "3-4",

}

TY - JOUR

T1 - AC susceptibility and microstructure of alkali doped polycrystalline YBCO HTSC materials

AU - Veneva, A.

AU - Petrov, D. K.

AU - Dittrich, P.

AU - Naughton, M. J.

PY - 1996/11/10

Y1 - 1996/11/10

N2 - In this work we report experimental results concerning the influence of potassium and excess copper additions on the AC complex susceptibility and microstructural development within polycrystalline YBCO high-temperature superconductors with nominal composition Y1-0.2xBa2-0.2xKxCu3Oy (x = 0-1.20). The real (X′) and the imaginary (X″) parts of the complex magnetic susceptibility of YBCO were recorded as a function of the temperature at various magnetic fields up to 10 Oe. From these data the intergranular critical current densities were calculated using Bean's critical state model. A proper concentration x, which is approximately equal to x = 0.40 in the initial Y1-0.2xBa2-0.2xKxCu3Oy batch was found to improve the Josephson coupling between the grains.

AB - In this work we report experimental results concerning the influence of potassium and excess copper additions on the AC complex susceptibility and microstructural development within polycrystalline YBCO high-temperature superconductors with nominal composition Y1-0.2xBa2-0.2xKxCu3Oy (x = 0-1.20). The real (X′) and the imaginary (X″) parts of the complex magnetic susceptibility of YBCO were recorded as a function of the temperature at various magnetic fields up to 10 Oe. From these data the intergranular critical current densities were calculated using Bean's critical state model. A proper concentration x, which is approximately equal to x = 0.40 in the initial Y1-0.2xBa2-0.2xKxCu3Oy batch was found to improve the Josephson coupling between the grains.

KW - AC susceptibility of superconductors

KW - Critical current density

KW - Grain boundaries

KW - Microstructure

KW - Substitution effects

KW - Weak links

UR - http://www.scopus.com/inward/record.url?scp=0030286320&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0030286320&partnerID=8YFLogxK

U2 - 10.1016/S0921-4534(96)00560-6

DO - 10.1016/S0921-4534(96)00560-6

M3 - Article

AN - SCOPUS:0030286320

VL - 271

SP - 230

EP - 234

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

SN - 0921-4534

IS - 3-4

ER -