Millisecond direct measurement of the magnetocaloric effect of a fe2p-based compound by the mirage effect

Millisecond direct measurement of the magnetocaloric effect of a fe2p-based compound by the mirage effect

Author Cugini, F. Google Scholar
Porcari, G. Google Scholar
Viappiani, C. Google Scholar
Caron, L. Google Scholar
dos Santos, A. O. Google Scholar
Cardoso, L. P. Google Scholar
Passamani, E. C. Google Scholar
Proveti, J. R. C. Google Scholar
Gama, Sergio Autor UNIFESP Google Scholar
Bruck, E. Google Scholar
Solzi, M. Google Scholar
Abstract We present direct measurements of the magnetocaloric effect on a Fe2P-based compound induced by a milliseconds pulsed magnetic field of 1 T to test their possible use in high frequency (up to 100 Hz) thermomagnetic cycles. The reported measurements were performed with an innovative and versatile non-contact set up based on the mirage effect. The adiabatic temperature change of a MnFeP0.45As0.55 sample is presented and compared with measurements performed varying the same magnetic field in a time interval of 1 s and 100 ms. These results demonstrate the absence of kinetic constraints in the first-order phase transition of this sample induced on the milliseconds time scale. The study of the materials' response to millisecond magnetic field pulses represents a fundamental test for the development of more powerful and efficient magnetic refrigerators. (C) 2016 AIP Publishing LLC.
Keywords Photothermal-Deflection Spectrometry
Step Optical-Excitation
Refrigeration
Spectroscopy
Transitions
Language English
Sponsor Fondazione Cariparma
Fundacao de Amparo a Pesquisa do Estado de Sao Paulo-FAPESP [03/12604-6]
FAPES
CNPq
Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO) [IPP I28]
BASF New Business
Grant number FAPESP: 03/12604-6
Date 2016
Published in Applied Physics Letters. Melville, v. 108, n. 1, 2016.
ISSN 0003-6951 (Sherpa/Romeo, impact factor)
Publisher Univ Brasilia
Origin https://doi.org/10.1063/1.4939451
Access rights Closed access
Type Article
Web of Science ID WOS:000374313000041
URI http://repositorio.unifesp.br/handle/11600/49196

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