Evidence for 2D-3D magnetic ordering of Gd in high-{ital T}{sub {ital c}}-related CaGdCuO{sub 3}Cl and Ca{sub 4}{ital R}{sub 2}Cu{sub 3}O{sub 8}Cl{sub 4} ({ital R}=Gd,Sm)

Journal Article · Fri Nov 01 00:00:00 EST 1996 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.54.12576· OSTI ID:388342

Sundaresan, A; Maignan, A; Raveau, B ^[1]

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1. Laboratoire CRISMAT, ISMRA, Bd du Marechal Juin 14050, Caen Cedex (France)

The magnetic susceptibilities of two high-{ital T}{sub {ital c}}-related semiconducting copper oxychlorides CaGdCuO{sub 3}Cl and Ca{sub 4}Gd{sub 2}Cu{sub 3}O{sub 8}Cl{sub 4} have been measured between 1.8 and 300 K. While magnetic ordering of Gd moments in all other high-{ital T}{sub {ital c}}-related compounds seems to be three-dimensional (3D), we see evidence for 2D-3D ordering of Gd moments in these copper oxychlorides. These ordering processes have been discussed on the basis of large anisotropy of the structure of these compounds compared to one of their parent structures Gd{sub 2}CuO{sub 4}. We have also carried out magnetic-susceptibility measurement on Ca{sub 4}Sm{sub 2}Cu{sub 3}O{sub 8}Cl{sub 4}, where there is no indication for Sm ordering down to 1.8 K. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 388342
• Journal Information: Physical Review, B: Condensed Matter, Vol. 54, Issue 17; Other Information: PBD: Nov 1996
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
GADOLINIUM COMPOUNDS
MAGNETIC PROPERTIES
SAMARIUM COMPOUNDS
OXIDES
SEMICONDUCTOR MATERIALS
HIGH-TC SUPERCONDUCTORS
CALCIUM COMPOUNDS
COPPER COMPOUNDS
CHLORIDES
ORDER-DISORDER TRANSFORMATIONS
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0000-0013 K
TEMPERATURE RANGE 0013-0065 K
TEMPERATURE RANGE 0065-0273 K
TEMPERATURE RANGE 0273-0400 K
COMPARATIVE EVALUATIONS