In situ pulsed laser deposition of Nd sub 1. 85 Ce sub 0. 15 CuO sub 4 minus y

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

DOI:https://doi.org/10.1063/1.349691· OSTI ID:5749171

Horwitz, J S; Chrisey, D B; Osofsky, M S; Grabowski, K S ^[1]; Vanderah, T A ^[2]

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1. Division of Condensed Matter and Radiation Sciences, Naval Research Laboratory, Washington, DC 20375-5000 (US)
2. Chemistry Division, Research Department, Naval Weapons Center, China Lake, California 93555 (US)

Thin films of the electron-charge-carrying high-temperature superconductor, Nd{sub 1.85}Ce{sub 0.15}CuO{sub 4{minus}{ital y}} have been deposited by pulsed laser deposition on to {l angle}100{r angle} MgO and SrTiO{sub 3} substrates. Film composition, structure, and transport properties were measured as a function of deposition conditions (substrate temperature, oxygen deposition pressure, and postdeposition annealing conditions). {ital C}-axis oriented, single-phase films were formed at high substrate temperatures (900 {degree}C) in high background pressures of oxygen (200 mTorr), but were semiconducting when quenched to room temperature in either oxygen or nitrogen. A reduced oxygen background pressure during deposition at 900 {degree}C resulted in films that were transparent and insulating due to the loss of copper. Films which were deposited at 900 {degree}C ({ital P}{sub oxygen}{ge}200 mTorr) and then slowly cooled in a vacuum were superconducting with a maximum {ital T}{sub {ital c}} (onset) of 15 K and {ital T}{sub {ital c}}({ital R} = 0) of 11 K.

• OSTI ID: 5749171
• Journal Information: Journal of Applied Physics; (USA), Journal Name: Journal of Applied Physics; (USA) Vol. 70:2; ISSN 0021-8979; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
AMINES
AMMONIUM COMPOUNDS
CERIUM COMPOUNDS
CERIUM OXIDES
CHALCOGENIDES
CHEMICAL COATING
CHEMICAL VAPOR DEPOSITION
COPPER COMPOUNDS
COPPER OXIDES
DEPOSITION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
FILMS
HIGH-TC SUPERCONDUCTORS
NEODYMIUM COMPOUNDS
NEODYMIUM OXIDES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
QUATERNARY COMPOUNDS
RARE EARTH COMPOUNDS
SUPERCONDUCTING FILMS
SUPERCONDUCTIVITY
SUPERCONDUCTORS
SURFACE COATING
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE