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Publications in Scientific Journals:

E. Kaniusas, H. Pfützner, L. Mehnen, J. Kosel, J. Tellez-Blanco, E Mulasalihovic, T Meydan, M Vazquez, M. Rohn, C Malvicino, B Marquardt:
"Optimisation of sensitivity and time constant of thermal sensors based on magnetoelastic amorphous bilayers";
Journal of Alloys and Compounds, 369 (2004), 198 - 201.



English abstract:
The paper concerns bilayers as thermal sensors which consist of a magnetostrictive amorphous layer (ML) glued on a nonmagnetic metal counter layer (CL). Different thermal expansion coefficients of ML and CL yield by temperature change mechanical stress of constant sign in the ML. The corresponding change of the ML-permeability μ is registered by a pick-up coil. The main target of the study is to connect high temperature sensitivity with low time constant. A good compromise results by reducing the glue layer thickness, minimizing the bilayer dimensions and leaving ML and CL unglued inside the pick-up coil. First prototypes show a bilayer size close to 20 mm x 3 mm, the ML thickness being close to 30 μm, the CL thickness up to 100 μm. Preliminary results show a sensitivity up to 3 % change of μ per K in the temperature range from 10C to 40C, the time constant being in the range of 1 to 2 s.


Online library catalogue of the TU Vienna:
http://aleph.ub.tuwien.ac.at/F?base=tuw01&func=find-c&ccl_term=AC04967982


Created from the Publication Database of the Vienna University of Technology.