Geometrical magnetic frustration in rare-earth chalcogenide spinels

G. C. Lau, R. S. Freitas, B. G. Ueland, P. Schiffer, R. J. Cava

Research output: Contribution to journalArticle

Abstract

We have characterized the magnetic and structural properties of the Cd Ln2 Se4 (Ln=Dy,Ho), and Cd Ln2 S4 (Ln=Ho,Er,Tm,Yb), spinels. We observe all compounds to be normal spinels, possessing a geometrically frustrated sublattice of lanthanide atoms with no observable structural disorder. Fits to the high-temperature magnetic susceptibilities indicate these materials to have effective antiferromagnetic interactions, with Curie-Weiss temperatures ΘW ∼-10 K, except Cd Yb2 S4 for which ΘW ∼-40 K. The absence of magnetic long-range order or glassiness above T=1.8 K strongly suggests that these materials are a different venue in which to study the effects of strong geometrical frustration, potentially as rich in interesting physical phenomena as that of the pyrochlore oxides.

Original languageEnglish (US)
Article number054411
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume72
Issue number5
DOIs
StatePublished - Aug 1 2005

Fingerprint

frustration
sublattices
Rare earths
rare earth elements
disorders
magnetic properties
magnetic permeability
Lanthanoid Series Elements
oxides
Curie temperature
Rare earth elements
Magnetic susceptibility
Oxides
atoms
Structural properties
Magnetic properties
interactions
Atoms
temperature
Temperature

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Geometrical magnetic frustration in rare-earth chalcogenide spinels. / Lau, G. C.; Freitas, R. S.; Ueland, B. G.; Schiffer, P.; Cava, R. J.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 72, No. 5, 054411, 01.08.2005.

Research output: Contribution to journalArticle

Lau, G. C. ; Freitas, R. S. ; Ueland, B. G. ; Schiffer, P. ; Cava, R. J. / Geometrical magnetic frustration in rare-earth chalcogenide spinels. In: Physical Review B - Condensed Matter and Materials Physics. 2005 ; Vol. 72, No. 5.
@article{ad36fc35e7754a32922d65b5718e2df4,
title = "Geometrical magnetic frustration in rare-earth chalcogenide spinels",
abstract = "We have characterized the magnetic and structural properties of the Cd Ln2 Se4 (Ln=Dy,Ho), and Cd Ln2 S4 (Ln=Ho,Er,Tm,Yb), spinels. We observe all compounds to be normal spinels, possessing a geometrically frustrated sublattice of lanthanide atoms with no observable structural disorder. Fits to the high-temperature magnetic susceptibilities indicate these materials to have effective antiferromagnetic interactions, with Curie-Weiss temperatures ΘW ∼-10 K, except Cd Yb2 S4 for which ΘW ∼-40 K. The absence of magnetic long-range order or glassiness above T=1.8 K strongly suggests that these materials are a different venue in which to study the effects of strong geometrical frustration, potentially as rich in interesting physical phenomena as that of the pyrochlore oxides.",
author = "Lau, {G. C.} and Freitas, {R. S.} and Ueland, {B. G.} and P. Schiffer and Cava, {R. J.}",
year = "2005",
month = "8",
day = "1",
doi = "10.1103/PhysRevB.72.054411",
language = "English (US)",
volume = "72",
journal = "Physical Review B-Condensed Matter",
issn = "0163-1829",
publisher = "American Institute of Physics Publising LLC",
number = "5",

}

TY - JOUR

T1 - Geometrical magnetic frustration in rare-earth chalcogenide spinels

AU - Lau, G. C.

AU - Freitas, R. S.

AU - Ueland, B. G.

AU - Schiffer, P.

AU - Cava, R. J.

PY - 2005/8/1

Y1 - 2005/8/1

N2 - We have characterized the magnetic and structural properties of the Cd Ln2 Se4 (Ln=Dy,Ho), and Cd Ln2 S4 (Ln=Ho,Er,Tm,Yb), spinels. We observe all compounds to be normal spinels, possessing a geometrically frustrated sublattice of lanthanide atoms with no observable structural disorder. Fits to the high-temperature magnetic susceptibilities indicate these materials to have effective antiferromagnetic interactions, with Curie-Weiss temperatures ΘW ∼-10 K, except Cd Yb2 S4 for which ΘW ∼-40 K. The absence of magnetic long-range order or glassiness above T=1.8 K strongly suggests that these materials are a different venue in which to study the effects of strong geometrical frustration, potentially as rich in interesting physical phenomena as that of the pyrochlore oxides.

AB - We have characterized the magnetic and structural properties of the Cd Ln2 Se4 (Ln=Dy,Ho), and Cd Ln2 S4 (Ln=Ho,Er,Tm,Yb), spinels. We observe all compounds to be normal spinels, possessing a geometrically frustrated sublattice of lanthanide atoms with no observable structural disorder. Fits to the high-temperature magnetic susceptibilities indicate these materials to have effective antiferromagnetic interactions, with Curie-Weiss temperatures ΘW ∼-10 K, except Cd Yb2 S4 for which ΘW ∼-40 K. The absence of magnetic long-range order or glassiness above T=1.8 K strongly suggests that these materials are a different venue in which to study the effects of strong geometrical frustration, potentially as rich in interesting physical phenomena as that of the pyrochlore oxides.

UR - http://www.scopus.com/inward/record.url?scp=33644934751&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33644934751&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.72.054411

DO - 10.1103/PhysRevB.72.054411

M3 - Article

AN - SCOPUS:33644934751

VL - 72

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 0163-1829

IS - 5

M1 - 054411

ER -