Reactivity and passivation for Bi adatoms on YBa/sub 2/Cu/sub 3/O/sub 6. 9/ and Bi/sub 2/Ca/sub 1//sub +//sub x/Sr/sub 2//sub -//sub x/Cu/sub 2/O/sub 8//sub +//sub y/

Journal Article · Mon Sep 12 00:00:00 EDT 1988 · Appl. Phys. Lett.; (United States)

DOI:https://doi.org/10.1063/1.100650· OSTI ID:6866261

Meyer, III, H M; Hill, D M; Weaver, J H; Nelson, D L; Goretta, K C

X-ray photoemission spectroscopy was used to examine the reactivity of clean YBa/sub 2/Cu/sub 3/O/sub 6.9/ and Bi/sub 2/Ca/sub 1+//sub x/Sr/sub 2-//sub x/Cu/sub 2/O/sub 8+//sub y/ surfaces with adatoms of vapor-deposited bismuth. For YBa/sub 2/Cu/sub 3/O/sub 6.9/, depositions less than or equal to8 A of Bi induce O 1s, Cu 2p/sub 3/2/, and Bi 4f line-shape changes due to BiO bonding, limited oxygen loss from the substrate, partial conversion of Cu/sup 2 +/ to Cu/sup 1 +/, and growth of Bi metal. For coverages greater than 8 A, there is no reaction and only Bi metal growth is observed. For Bi deposition onto Bi/sub 1/Ca/sub 1+//sub x/Sr/sub 2-//sub x/Cu/sub 2/O/sub 8+//sub y/, there is minimal reaction with only subtle O 1s and Cu 2p/sub 3//sub ///sub 2/ line-shape changes and the nucleation and growth of Bi metal starting at low coverages (greater than or equal to2 A). Comparison shows that Bi is less reactive than other metals, except Ag and Au, and that Bi/sub 2/Ca/sub 1+//sub x/Sr/sub 2-//sub x/Cu/sub 2/O/sub 8+//sub y/ is more stable toward Bi deposition than YBa/sub 2/Cu/sub 3/O/sub 6.9/.

• Research Organization: Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455
• OSTI ID: 6866261
• Journal Information: Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 53:11; ISSN APPLA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
360205 -- Ceramics
Cermets
& Refractories-- Corrosion & Erosion
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ADSORPTION
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
BISMUTH
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
COPPER COMPOUNDS
COPPER OXIDES
DATA
ELECTRON SPECTROSCOPY
ELEMENTS
EXPERIMENTAL DATA
INFORMATION
METALS
NUCLEATION
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PASSIVATION
PHOTOELECTRON SPECTROSCOPY
REACTIVITY
SORPTION
SORPTIVE PROPERTIES
SPECTROSCOPY
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SURFACE PROPERTIES
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES