Thermomagnetic Effects in Spatially Heterogeneous System with the Combined Resistance—Magnetic Phase Transition of the First Kind
Yu. I. Dzhezherya, A. N. Gryshchuk
National Technical University of Ukraine ‘Igor Sikorsky Kyiv Polytechnic Institute’, 37 Peremohy Ave., UA-03056 Kyiv, Ukraine
Received: 26.05.2014. Download: PDF
The system with temperature autostabilization is examined. The functional element of the system is made of manganite with a perovskite-type structure, for which the combined resistance-magnetic first-order phase transition is observed. The expression for the temperature of film (as a functional element), including dispersion of the phase-transition temperature, is defined. As shown, the temperature is stabilized in the neighbourhood of average value of the Curie temperature, and this indicates thermally stabilized properties of the system. As shown, the external magnetic field effectively influences on the film temperature, when current is passed through the film.
Key words: manganites, perovskite, paramagnet, phase transition.
PACS: 44.35.+c, 72.15.Jf, 72.60.+g, 73.50.Jt, 75.20.-g, 75.30.Kz, 75.47.Lx
Citation: Yu. I. Dzhezherya and A. N. Gryshchuk, Thermomagnetic Effects in Spatially Heterogeneous System with the Combined Resistance—Magnetic Phase Transition of the First Kind, Metallofiz. Noveishie Tekhnol., 37, No. 1: 1—12 (2015) (in Russian)