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Growth of lead thin films on silicon and niobium substrates by sputtering technique
University of Salento, Italy.
University of Salento, Italy.
University of Salento, Italy.
Linköping University, Department of Physics, Chemistry and Biology, Thin Film Physics. Linköping University, Faculty of Science & Engineering.
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2017 (English)In: Journal of Vacuum Science & Technology. A. Vacuum, Surfaces, and Films, ISSN 0734-2101, E-ISSN 1520-8559, Vol. 35, no 3, 031502Article in journal (Refereed) Published
Abstract [en]

In this paper, the authors report the growth of Pb thin films on both Si and Nb substrates by radio-frequency sputtering technique. Deposited films were characterized and tested to deduce the structure, the morphology, the nanomechanical properties, and also the quantum efficiency. Granular structures and large presence of voids were observed by scanning electron microscopy; moreover, the roughness and grain size of the film surface, investigated by surface probe microscopy, increased with the film thickness. Crystallographic orientation, studied by x-ray diffraction, showed the growth of polycrystalline Pb thin films and the presence of weak diffraction peaks related to penta-lead oxide (Pb5O8). The nanomechanical analysis reveals a film hardness with a value (similar to 1.5GPa) well beyond the hardness of Pb bulk (0.04GPa). Finally, twin Pb thin films deposited on Nb substrates were tested as photocathodes showing its great potentiality to be used in superconducting radio-frequency guns with a quantum efficiency of 5 x 10(-5). (C) 2017 American Vacuum Society.

Place, publisher, year, edition, pages
A V S AMER INST PHYSICS , 2017. Vol. 35, no 3, 031502
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:liu:diva-138277DOI: 10.1116/1.4978040ISI: 000401122700024OAI: oai:DiVA.org:liu-138277DiVA: diva2:1109090
Note

Funding Agencies|Italian National Institute of Nuclear Physics (INFN); Italian MIUR through Project FIRB Futuro in Ricerca [RBFR12NK5K]; Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linkoping University (Faculty Grant SFO-Mat-LiU) [2009-00971]

Available from: 2017-06-13 Created: 2017-06-13 Last updated: 2017-06-13

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Eriksson, FredrikBroitman, Esteban
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Thin Film PhysicsFaculty of Science & EngineeringDepartment of Physics, Chemistry and Biology
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CiteExportLink to record
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