Transport studies of YBa 2 Cu 3 O y /Y x Pr 1-x Ba 2 Cu 3 O y and YBa 2 Cu 3 O y /R 0.7 M 0-3 MnO 3 superlattices, in which R = La or Nd, and M = Ca or Sr

Hong-Chang Yang, J. C. Chen, L. M. Wang, H. H. Sung, Herng-Er Horng, Shieh-Yueh Yang, J. T. Jeng

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We report the transport studies of YBa 2 Cu 3 O y /Y x Pr 1-x Ba 2 Cu 3 O y and YBa 2 Cu 3 Oy/R 1-x M x MnO 3 superlattices in magnetic fields in which R = La or Nd, and M = Ca or Sr. The X-ray diffraction of samples shows superlattice structure. The resistive transition in a magnetic field shows thermal activated behavior. The flux pinning is reduced when the coupling strength between YBCO layers is decreased. The angular dependence of the critical current of YBa 2 Cu 3 O y /PrBa 2 Cu 3 O y superlattices reveals the dimensionality of superlattices. The magnetoresistance ratio (MR),|Δρ(H = 7 T) - Δρ(H = 0)|/Δρ(H = 7 T), of YBa 2 Cu 3 O y /R 1-x M x MnO 3 superlattices is affected by the layer coupling of R 1-x M x MnO 3 layers. The enhancement of the MR ratio in the tri-layer YBa 2 Cu 3 O y /La 0.7 M 0.3 MnO 3 /YBa 2 Cu 3 O y film in the low temperature regime is significant and has a value of 33650% at T = 75 K. We attribute this enhancement of the MR to the ordering of magnetic moment in ferromagnetic layers in magnetic fields. The results are discussed in terms of existing theories.

Original languageEnglish
Pages (from-to)1837-1846
Number of pages10
JournalJournal of Physics and Chemistry of Solids
Volume62
Issue number9-10
DOIs
Publication statusPublished - 2001 Jan 1

Fingerprint

Superlattices
superlattices
Magnetoresistance
Magnetic fields
Flux pinning
magnetic fields
Critical currents
Magnetic moments
augmentation
flux pinning
critical current
X ray diffraction
magnetic moments
diffraction
x rays
Temperature

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Transport studies of YBa 2 Cu 3 O y /Y x Pr 1-x Ba 2 Cu 3 O y and YBa 2 Cu 3 O y /R 0.7 M 0-3 MnO 3 superlattices, in which R = La or Nd, and M = Ca or Sr. / Yang, Hong-Chang; Chen, J. C.; Wang, L. M.; Sung, H. H.; Horng, Herng-Er; Yang, Shieh-Yueh; Jeng, J. T.

In: Journal of Physics and Chemistry of Solids, Vol. 62, No. 9-10, 01.01.2001, p. 1837-1846.

Research output: Contribution to journalArticle

@article{2996962504914664b1c9dacb01c9310c,
title = "Transport studies of YBa 2 Cu 3 O y /Y x Pr 1-x Ba 2 Cu 3 O y and YBa 2 Cu 3 O y /R 0.7 M 0-3 MnO 3 superlattices, in which R = La or Nd, and M = Ca or Sr",
abstract = "We report the transport studies of YBa 2 Cu 3 O y /Y x Pr 1-x Ba 2 Cu 3 O y and YBa 2 Cu 3 Oy/R 1-x M x MnO 3 superlattices in magnetic fields in which R = La or Nd, and M = Ca or Sr. The X-ray diffraction of samples shows superlattice structure. The resistive transition in a magnetic field shows thermal activated behavior. The flux pinning is reduced when the coupling strength between YBCO layers is decreased. The angular dependence of the critical current of YBa 2 Cu 3 O y /PrBa 2 Cu 3 O y superlattices reveals the dimensionality of superlattices. The magnetoresistance ratio (MR),|Δρ(H = 7 T) - Δρ(H = 0)|/Δρ(H = 7 T), of YBa 2 Cu 3 O y /R 1-x M x MnO 3 superlattices is affected by the layer coupling of R 1-x M x MnO 3 layers. The enhancement of the MR ratio in the tri-layer YBa 2 Cu 3 O y /La 0.7 M 0.3 MnO 3 /YBa 2 Cu 3 O y film in the low temperature regime is significant and has a value of 33650{\%} at T = 75 K. We attribute this enhancement of the MR to the ordering of magnetic moment in ferromagnetic layers in magnetic fields. The results are discussed in terms of existing theories.",
author = "Hong-Chang Yang and Chen, {J. C.} and Wang, {L. M.} and Sung, {H. H.} and Herng-Er Horng and Shieh-Yueh Yang and Jeng, {J. T.}",
year = "2001",
month = "1",
day = "1",
doi = "10.1016/S0022-3697(01)00116-0",
language = "English",
volume = "62",
pages = "1837--1846",
journal = "Journal of Physics and Chemistry of Solids",
issn = "0022-3697",
publisher = "Elsevier Limited",
number = "9-10",

}

TY - JOUR

T1 - Transport studies of YBa 2 Cu 3 O y /Y x Pr 1-x Ba 2 Cu 3 O y and YBa 2 Cu 3 O y /R 0.7 M 0-3 MnO 3 superlattices, in which R = La or Nd, and M = Ca or Sr

AU - Yang, Hong-Chang

AU - Chen, J. C.

AU - Wang, L. M.

AU - Sung, H. H.

AU - Horng, Herng-Er

AU - Yang, Shieh-Yueh

AU - Jeng, J. T.

PY - 2001/1/1

Y1 - 2001/1/1

N2 - We report the transport studies of YBa 2 Cu 3 O y /Y x Pr 1-x Ba 2 Cu 3 O y and YBa 2 Cu 3 Oy/R 1-x M x MnO 3 superlattices in magnetic fields in which R = La or Nd, and M = Ca or Sr. The X-ray diffraction of samples shows superlattice structure. The resistive transition in a magnetic field shows thermal activated behavior. The flux pinning is reduced when the coupling strength between YBCO layers is decreased. The angular dependence of the critical current of YBa 2 Cu 3 O y /PrBa 2 Cu 3 O y superlattices reveals the dimensionality of superlattices. The magnetoresistance ratio (MR),|Δρ(H = 7 T) - Δρ(H = 0)|/Δρ(H = 7 T), of YBa 2 Cu 3 O y /R 1-x M x MnO 3 superlattices is affected by the layer coupling of R 1-x M x MnO 3 layers. The enhancement of the MR ratio in the tri-layer YBa 2 Cu 3 O y /La 0.7 M 0.3 MnO 3 /YBa 2 Cu 3 O y film in the low temperature regime is significant and has a value of 33650% at T = 75 K. We attribute this enhancement of the MR to the ordering of magnetic moment in ferromagnetic layers in magnetic fields. The results are discussed in terms of existing theories.

AB - We report the transport studies of YBa 2 Cu 3 O y /Y x Pr 1-x Ba 2 Cu 3 O y and YBa 2 Cu 3 Oy/R 1-x M x MnO 3 superlattices in magnetic fields in which R = La or Nd, and M = Ca or Sr. The X-ray diffraction of samples shows superlattice structure. The resistive transition in a magnetic field shows thermal activated behavior. The flux pinning is reduced when the coupling strength between YBCO layers is decreased. The angular dependence of the critical current of YBa 2 Cu 3 O y /PrBa 2 Cu 3 O y superlattices reveals the dimensionality of superlattices. The magnetoresistance ratio (MR),|Δρ(H = 7 T) - Δρ(H = 0)|/Δρ(H = 7 T), of YBa 2 Cu 3 O y /R 1-x M x MnO 3 superlattices is affected by the layer coupling of R 1-x M x MnO 3 layers. The enhancement of the MR ratio in the tri-layer YBa 2 Cu 3 O y /La 0.7 M 0.3 MnO 3 /YBa 2 Cu 3 O y film in the low temperature regime is significant and has a value of 33650% at T = 75 K. We attribute this enhancement of the MR to the ordering of magnetic moment in ferromagnetic layers in magnetic fields. The results are discussed in terms of existing theories.

UR - http://www.scopus.com/inward/record.url?scp=0035479851&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035479851&partnerID=8YFLogxK

U2 - 10.1016/S0022-3697(01)00116-0

DO - 10.1016/S0022-3697(01)00116-0

M3 - Article

AN - SCOPUS:0035479851

VL - 62

SP - 1837

EP - 1846

JO - Journal of Physics and Chemistry of Solids

JF - Journal of Physics and Chemistry of Solids

SN - 0022-3697

IS - 9-10

ER -