TITLE

Optical characterization of surface and interface oxygen content in YBa2Cu3Ox

AUTHOR(S)
Kelly, M. K.; Chan, Siu-Wai; Jenkin, K.; Aspnes, D. E.; Barboux, P.; Tarascon, J.-M.
PUB. DATE
December 1988
SOURCE
Applied Physics Letters;12/5/1988, Vol. 53 Issue 23, p2333
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Because YBa2Cu3Ox exists over a range of oxygen content and low oxygen material is nonsuperconducting, it is important to be able to measure and control this parameter for application purposes. We present an optical technique for determining oxygen loss at surfaces and interfaces, where processing and contacts with other materials may affect composition and where usual techniques are insensitive. Using a strong absorption feature at 4.1 eV which appears at low oxygen composition, we find that overlayers of Al and In remove oxygen from YBa2Cu3Ox, but Ag, Au, and room-temperature exposure to moderate vacuum do not.
ACCESSION #
9829019

 

Related Articles

  • Growth, physical properties, and adhesion of copper-polyphenylquinoxaline interfaces. Pireaux, J. J.; Grégoire, Ch.; Bellard, L.; Cros, A.; Torres, J.; Palleau, J.; Templier, F.; Nechstchein, J.; Lazare, S. // Journal of Applied Physics;7/15/1994, Vol. 76 Issue 2, p1244 

    Investigates the physicochemical surface properties of polyphenylquinoxaline (PPQ) and of copper-PPQ interfaces. Chemical formula of PPQ; Description of the experiments; Virgin PPQ surface characterization; Discussion on ultraviolet-treated PPQ surface characterization.

  • High-intensity laser-induced vaporization without internal superheating. Beckett, P. M. // Journal of Applied Physics;10/15/1985, Vol. 58 Issue 8, p2943 

    Addresses the problem of superheating in an infinite solid. Determination of the movement of the interface; Details of the quasi-steady solution; Advantages of inserting a mushy zone between the fully solid and the fully molten phases.

  • Suppression of interface reaction and modification of band offset by Sb interlayers in CdS/InP (110) heterojunctions. Maierhofer, Ch.; Zahn, D. R. T.; Evans, D. A.; Horn, K. // Journal of Applied Physics;4/15/1993, Vol. 73 Issue 8, p4089 

    Presents information on a study that found that the deposition of monatomic interlayers at the interface between CdS and InP efficiently suppresses the interface reaction characteristics for the system and has marked influence on the valence-band offset. Research method; Results and discussion...

  • Study of interface states and oxide quality to avoid contrast reversal in scanning capacitance microscopy. Goghero, Didier; Raineri, Vito; Giannazzo, Filippo // Applied Physics Letters;9/2/2002, Vol. 81 Issue 10, p1824 

    We demonstrate that the contrast reversal effect in scanning capacitance microscopy (SCM) is related to the Si/SiO[sub 2] interface microroughness. The surface roughness has been associated with the concentration of states at the Si/SiO[sub 2] interface and a monotonic behavior of the SCM...

  • Detection of Weak Interface Signals for Same Material Bond/Weld Inspection. Rinker, B. A.; Jamieson, E. E.; Samayoa, J. A.; Abeln, T. G.; Lerch, T. P.; Neal, S. P. // AIP Conference Proceedings;2003, Vol. 657 Issue 1, p1080 

    In same material joining processes, remnants of the original interface may be acoustically weak and difficult to detect ultrasonically in the presence of grain noise. For the nearly perfect (but potentially inadequate) bond or weld the remaining interface may be defined only by small voids,...

  • Influence of oxygen on band alignment at the organic/aluminum interface. Blyth, R. I. R.; Blyth, R.I.R.; Sardar, S. A.; Sandar, S.A.; Netzer, F. P.; Netzer, F.P.; Ramsey, M. G.; Ramsey, M.G. // Applied Physics Letters;8/21/2000, Vol. 77 Issue 8 

    The presence of adventitious oxygen is inevitable when organic/metal interfaces are formed by evaporation in high vacuum (10[sup -6] mbar.). In this letter, we highlight the importance of this oxygen for band alignment, and hence, performance, in organic-based devices. The influence of...

  • Technique of surface-wave scattering and calibration with simple liquids. Sano, M.; Kawaguchi, M.; Chen, Y-L.; Skarlupka, R. J.; Chang, T.; Zografi, G.; Yu, H. // Review of Scientific Instruments;Jun86, Vol. 57 Issue 6, p1158 

    Heterodyne detection of light scattered from capillary waves is used to study the surface properties of the air–liquid interface. A diffraction grating is employed to select a precise ripplon wave vector k and to provide a stable local oscillator field. The optics are designed to form a...

  • Nonlinear energy-selective nanoscale modifications of materials and dynamics in metals and semiconductors. Marka, S.; Parks Cheney, C.; Wang, W.; L�pke, G.; Gilligan, J.; Yao, Y.; Tolk, N. H. // Technical Physics;Sep99, Vol. 44 Issue 9, p1069 

    Studies of nonlinear, energy-selective material interactions localized at surfaces, heterointerfaces, impurities, and defects in solids are described. Particular reference is made to a new molecular interaction effect caused by transfer of surface energy by low-energy collisions, a new...

  • Width of Steps on a Rough Surface. Berzin, A. A.; Morozov, A. I. // Physics of the Solid State;Feb2000, Vol. 42 Issue 2, p364 

    Computer simulation of a rough surface indicates that a relation exists between the experimentally determined degree of roughness of interlayer boundaries and the correlation length, on the one hand, and the characteristic width of atomic steps on the layer interfaces in multilayered structures,...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics