Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Thermal stability of Mo/Au bilayers for TES applications.
Year:2012
Research Areas
  • Engineering
Information
Abstract
Mo/Au bilayers are among the most suitable materials to be used as transition-edge sensors (TES) in cryogenic microcalorimeters and bolometers, developed, among other fields, for space missions. For this purpose the thermal stability of TES at temperatures below 150 ?C is a critical issue. We report on the dependence of functional properties (superconducting critical temperature, residual resistance and ) as well as on microstructure, chemical composition and interface quality for optimized high quality Mo/Au bilayers on annealing temperature and time. Data show that the functional properties of the bilayers remain stable at T < 150 ?C, but changes in microstructure, interface quality and functional properties were observed for layers heated at T ? 200 ?C. Microstructural and chemical composition data suggest that the measured changes in residual resistance ratio (RRR) and TC at T ? 200 ?C are mainly due to an increase in the average Au grain size and to Au migration along the Mo grain boundaries at the Au/Mo interface. A way to stabilize the functional properties of the Mo/Au bilayers against temperature enhancements is proposed.
International
Si
JCR
Si
Title
Supercond. Science Technology
ISBN
1361-6668
Impact factor JCR
Impact info
Volume
25
10.1088/0953-2048/25/9/095001
Journal number
From page
095001
To page
095001
Month
SIN MES
Ranking
Participants
  • Autor: M. Parra-Border¿as (Universidad de Zaragoza¿CSIC)
  • Autor: I. Ferández-Martínez (Instituto de Microelectronica de Madrid, CNM-CSIC)
  • Autor: L. Fábrega (Institut de Ci`encia de Materials de Barcelona, CSIC)
  • Autor: A. Camón (Institut de Ciencia de Materials de Barcelona, CSIC)
  • Autor: O. Gil (Institut de Ciencia de Materials de Barcelona, CSIC)
  • Autor: Raquel Gonzalez Arrabal (UPM)
  • Autor: J. Sesé (Instituto de Nanociencia de Aragon, Universidad de Zaragoza)
  • Autor: J.L. Costa-Krämer (Instituto de Microelectronica de Madrid, CNM-CSIC)
  • Autor: B. Warot-Fonrose (CEMES)
  • Autor: V. Serin (CEMES)
  • Autor: F. Briones (Instituto de Microelectronica de Madrid, CNM-CSIC)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Fusión Nuclear Inercial y Tecnología de fusión
  • Departamento: Ingeniería Nuclear
  • Centro o Instituto I+D+i: Instituto de Fusión Nuclear
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)