Title :
Properties of bilayers based on Mo films for transition-edge sensors
Author :
Rajteri, M. ; Monticone, E. ; Gandini, C. ; Portesi, C. ; Rocci, R. ; Bodoardo, S.
Author_Institution :
Inst. Elettrotecnico Nazionale "Galileo Ferraris", Torino, Italy
fDate :
6/1/2003 12:00:00 AM
Abstract :
Transition-edge sensors (TES) are promising devices for materials science and space applications due to their spectroscopic capabilities and good count rates. In this work, we report details on fabrication and characterization of Mo films and Mo/Ag bilayers that, being immiscible and nonreactive with each other, should have a long time stability. Both single superconducting films and bilayers of normal-superconducting materials have been deposited in UHV by e-gun. Structural and morphological properties have been investigated by x-ray diffraction and AFM. Bilayers with transition widths of 1 mK are achievable, adequate to realize high sensitivity thermometers.
Keywords :
X-ray diffraction; atomic force microscopy; electron beam deposition; molybdenum; silver; superconducting photodetectors; superconducting thin films; AFM; Mo; Mo-Ag; X-ray diffraction; electron beam deposition; morphological properties; normal-superconducting bilayer; structural properties; superconducting film; thermometer; transition edge sensor; transition width; Gamma ray detectors; Infrared detectors; Sensor phenomena and characterization; Spectroscopy; Substrates; Superconducting films; Superconducting materials; Superconducting transition temperature; Temperature sensors; Thin film sensors;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2003.812291
