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Modification of the adhesion and contact resistance of the Ag/YBa2Cu3O7 interface with keV electron irradiation (1995)

Moss, S. D. ; O'Sullivan, R. A. ; Paterson, P. J. K. ; [et al.]

[S.l.] : American Institute of Physics (AIP)

Journal of Applied Physics 78 (1995), S. 5782-5786

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ISSN: 1089-7550

Source: AIP Digital Archive

Topics: Physics

Notes: The effect of 3.5 keV electron irradiation on adhesion and contact resistivity of the Ag/YBa2Cu3O7 interface has been studied using an evaporated silver layer on c-axis oriented superconducting YBa2Cu3O7 thin films. Electron doses ranged between 1016 and 1018 electrons/cm2. The Q-tip method of adhesion testing showed that even at the lowest electron dose adhesion is significantly improved. The contact resistivity of the interface was measured using a cross-junction four-point probe. Contact resistivity was unchanged at the lowest electron dose but increased as the electron dose increased. A theoretical model involving an electron irradiation damaged layer at the interface has been developed to explain measured contact resistivity changes. © 1995 American Institute of Physics.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.359641

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Hexagonal patterns in laser light (1996)

Scott, J. F. ; O'Sullivan, R. A.

[s.l.] : Nature Publishing Group

Nature 382 (1996), S. 305-305

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ISSN: 1476-4687

Source: Nature Archives 1869 - 2009

Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics

Notes: [Auszug] SIR -In 1969, Schwarz and Hora reported an effect1"3 in which low-power laser light scattered through quartz produced hexagonal patterns (a in the figure). This effect has defied explanation and reproduction since its discovery and has often been regarded with scepticism, although recently Honda ...