Measurement of magnetocaloric effect in pulsed magnetic fields with the help of infrared fiber optical temperature sensor

We present a new technique for experimental study of kinetics of phase transitions (PTs) and direct measurement of the magnetocaloric effect (MCE) in pulsed magnetic fields by using the fast response temperature probe with infrared fiber optical (IRFO) sensor. As demonstration of the new technique,...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2017-10, Vol.440, p.70-73
Main Authors: Kamantsev, Alexander P., Koledov, Victor V., Mashirov, Alexey V., Shavrov, Vladimir G., Yen, N.H., Thanh, P.T., Quang, V.M., Dan, N.H., Los, Anton S., Gilewski, Andrzej, Tereshina, Irina S., Butvina, Leonid N.
Format: Article
Language:English
Subjects:
Curie temperature
Fast response temperature measurements
Fe-Rh
Fiber optics
Infrared detectors
Infrared fiber optical probe
Kinetics of phase transition
Magnetic fields
Magnetism
Magnetization
Magnetocaloric effect
Optical fibers
Phase transitions
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Summary:We present a new technique for experimental study of kinetics of phase transitions (PTs) and direct measurement of the magnetocaloric effect (MCE) in pulsed magnetic fields by using the fast response temperature probe with infrared fiber optical (IRFO) sensor. As demonstration of the new technique, the results are presented of MCE measurements for Gd near Curie point: ΔTad = 21.3K under pulsed magnetic field µ0H = 12.7T; and inverse MCE for Fe48Rh52 sample at initial temperature 305.1K: ΔTad = −4.5K under pulsed magnetic field µ0H = 8.5T. Also, the energy losses on magnetization near the 1st order PT were calculated from the results of direct measurements of magnetization versus time for Fe48Rh52 sample: W = 45J/kg.
ISSN:0304-8853
1873-4766
DOI:10.1016/j.jmmm.2016.12.063