Correlation between weak ferromagnetism and crystal symmetry in (formula presented)-type cuprates

H. M. Luo, Yung-Yuan Hsu, B. N. Lin, Y. P. Chi, T. J. Lee, H. C. Ku

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Correlation between copper weak ferromagnetism (WF) and crystal structural symmetry of the (Formula presented) (Formula presented) or Tb; (Formula presented) systems is reported. Detailed powder x-ray Rietveld refinement analysis on (Formula presented) shows a systematic variation of oxygen distortion angle α(Cu-O-Cu) with ionic size where the lattice layer mismatch lowers the crystal symmetry to an orthorhombic (Formula presented)-phase with pseudotetragonal lattice parameter (Formula presented) Weak ferromagnetic or canted antiferromagnetic order is the direct result of this oxygen distortion which causes a σ-transfer (Formula presented) superexchange interaction in the (Formula presented) plane with a non-180° coupling angle. The small WF saturation moment (Formula presented) of (Formula presented) can be deduced from the copper moment (Formula presented) canting angle (Formula presented) Magnetic data and internal exchange field (Formula presented) estimation indicate that (Formula presented) WF saturation moment (Formula presented) decreases with larger (Formula presented) doping and increases with smaller (Formula presented) doping.

Original languageEnglish
Pages (from-to)13119-13124
Number of pages6
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume60
Issue number18
DOIs
Publication statusPublished - 1999 Jan 1

Fingerprint

Ferromagnetism
Crystal symmetry
ferromagnetism
cuprates
Copper
symmetry
Doping (additives)
Oxygen
crystals
Rietveld refinement
Crystal lattices
Powders
Lattice constants
X rays
Crystals
moments

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Correlation between weak ferromagnetism and crystal symmetry in (formula presented)-type cuprates. / Luo, H. M.; Hsu, Yung-Yuan; Lin, B. N.; Chi, Y. P.; Lee, T. J.; Ku, H. C.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 60, No. 18, 01.01.1999, p. 13119-13124.

Research output: Contribution to journalArticle

@article{b5d128cdc42e4892bfc4938afbdbc6fb,
title = "Correlation between weak ferromagnetism and crystal symmetry in (formula presented)-type cuprates",
abstract = "Correlation between copper weak ferromagnetism (WF) and crystal structural symmetry of the (Formula presented) (Formula presented) or Tb; (Formula presented) systems is reported. Detailed powder x-ray Rietveld refinement analysis on (Formula presented) shows a systematic variation of oxygen distortion angle α(Cu-O-Cu) with ionic size where the lattice layer mismatch lowers the crystal symmetry to an orthorhombic (Formula presented)-phase with pseudotetragonal lattice parameter (Formula presented) Weak ferromagnetic or canted antiferromagnetic order is the direct result of this oxygen distortion which causes a σ-transfer (Formula presented) superexchange interaction in the (Formula presented) plane with a non-180° coupling angle. The small WF saturation moment (Formula presented) of (Formula presented) can be deduced from the copper moment (Formula presented) canting angle (Formula presented) Magnetic data and internal exchange field (Formula presented) estimation indicate that (Formula presented) WF saturation moment (Formula presented) decreases with larger (Formula presented) doping and increases with smaller (Formula presented) doping.",
author = "Luo, {H. M.} and Yung-Yuan Hsu and Lin, {B. N.} and Chi, {Y. P.} and Lee, {T. J.} and Ku, {H. C.}",
year = "1999",
month = "1",
day = "1",
doi = "10.1103/PhysRevB.60.13119",
language = "English",
volume = "60",
pages = "13119--13124",
journal = "Physical Review B",
issn = "2469-9950",
publisher = "American Physical Society",
number = "18",

}

TY - JOUR

T1 - Correlation between weak ferromagnetism and crystal symmetry in (formula presented)-type cuprates

AU - Luo, H. M.

AU - Hsu, Yung-Yuan

AU - Lin, B. N.

AU - Chi, Y. P.

AU - Lee, T. J.

AU - Ku, H. C.

PY - 1999/1/1

Y1 - 1999/1/1

N2 - Correlation between copper weak ferromagnetism (WF) and crystal structural symmetry of the (Formula presented) (Formula presented) or Tb; (Formula presented) systems is reported. Detailed powder x-ray Rietveld refinement analysis on (Formula presented) shows a systematic variation of oxygen distortion angle α(Cu-O-Cu) with ionic size where the lattice layer mismatch lowers the crystal symmetry to an orthorhombic (Formula presented)-phase with pseudotetragonal lattice parameter (Formula presented) Weak ferromagnetic or canted antiferromagnetic order is the direct result of this oxygen distortion which causes a σ-transfer (Formula presented) superexchange interaction in the (Formula presented) plane with a non-180° coupling angle. The small WF saturation moment (Formula presented) of (Formula presented) can be deduced from the copper moment (Formula presented) canting angle (Formula presented) Magnetic data and internal exchange field (Formula presented) estimation indicate that (Formula presented) WF saturation moment (Formula presented) decreases with larger (Formula presented) doping and increases with smaller (Formula presented) doping.

AB - Correlation between copper weak ferromagnetism (WF) and crystal structural symmetry of the (Formula presented) (Formula presented) or Tb; (Formula presented) systems is reported. Detailed powder x-ray Rietveld refinement analysis on (Formula presented) shows a systematic variation of oxygen distortion angle α(Cu-O-Cu) with ionic size where the lattice layer mismatch lowers the crystal symmetry to an orthorhombic (Formula presented)-phase with pseudotetragonal lattice parameter (Formula presented) Weak ferromagnetic or canted antiferromagnetic order is the direct result of this oxygen distortion which causes a σ-transfer (Formula presented) superexchange interaction in the (Formula presented) plane with a non-180° coupling angle. The small WF saturation moment (Formula presented) of (Formula presented) can be deduced from the copper moment (Formula presented) canting angle (Formula presented) Magnetic data and internal exchange field (Formula presented) estimation indicate that (Formula presented) WF saturation moment (Formula presented) decreases with larger (Formula presented) doping and increases with smaller (Formula presented) doping.

UR - http://www.scopus.com/inward/record.url?scp=0012902511&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0012902511&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.60.13119

DO - 10.1103/PhysRevB.60.13119

M3 - Article

AN - SCOPUS:0012902511

VL - 60

SP - 13119

EP - 13124

JO - Physical Review B

JF - Physical Review B

SN - 2469-9950

IS - 18

ER -