Observation of short-range spin correlations in Fe-doped GdBa sub 2 Cu sub 3 O sub 7 minus. delta. superconductors

Journal Article · Mon Apr 15 04:00:00 EDT 1991 · Journal of Applied Physics; (USA)

DOI:https://doi.org/10.1063/1.348038· OSTI ID:5491107

Tang, H; Qiu, Z Q; Walker, J C ^[1]

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1. The Henry A. Rowland Department of Physics and Astronomy, The Johns Hopkins University, Baltimore, Maryland 21218 (USA)

The effects of Fe doping on the superconducting and magnetic properties of GdBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} superconductors have been thoroughly examined. Fe doping not only depresses the global superconducting transition temperature {ital T}{sub {ital c}}, but also locally destroys superconductivity in small regions around the Fe dopants. Moessbauer measurements at 4.2 K revealed magnetic hyperfine structure for samples doped with {ge}3% of Fe. Its origin is determined here to be Fe-induced short-range spin correlations of the Cu spins in the nonsuperconductive regions. Upon oxygen depletion, the short-range spin correlations evolve into the familiar long-range 3D antiferromagnetic ordering.

• OSTI ID: 5491107
• Journal Information: Journal of Applied Physics; (USA), Journal Name: Journal of Applied Physics; (USA) Vol. 69:8; ISSN 0021-8979; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
ALLOYS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
GADOLINIUM COMPOUNDS
GADOLINIUM OXIDES
HIGH-TC SUPERCONDUCTORS
IRON ADDITIONS
IRON ALLOYS
MAGNETIZATION
MOESSBAUER EFFECT
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
SUPERCONDUCTIVITY
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE