naa a22 4500 510815790 CHVBK 20180411083507.0 cr unu---uuuuu 180411e20131101xx s 000 0 eng 10.1134/S0031918X13110082 doi (NATIONALLICENCE)springer-10.1134/S0031918X13110082 Magnetic and magnetocaloric properties of (MnCo)1 − x Ge compounds [Elektronische Daten] [P. Markin, N. Mushnikov, E. Gerasimov, A. Proshkin, A. Volegov] The crystal structure, magnetic properties, and heat capacity of the (MnCo)1 − x Ge compounds with x ≤ 0.05 have been studied. It was found that, as the deviation from the MnCoGe stoichiometric composition increases, the temperature of structural transition from the low-temperature phase with the orthorhombic TiNiSi-type structure to the high-temperature phase with the hexagonal Ni2In-type phase decreases rapidly, whereas the magnetic ordering temperature varies slightly. The temperature of structural transition for the composition with x = 0.02 approximately coincides with the Curie temperature of the hexagonal phase, and the transition is accompanied by a significant entropy change, namely, ΔS = 34 J/(kg K). The application of high magnetic field in the transition-temperature range causes an increase in the relative volume of the orthorhombic phase. An analysis of magnetocaloric properties of these compounds, which was performed with the formal application of the Maxwell's relationship near the temperature of first-order structural phase transition, is shown to give overestimated values of the entropy change. Pleiades Publishing, Ltd., 2013 intermetallic compounds nationallicence structural transition nationallicence X-ray diffraction nationallicence heat capacity nationallicence magnetocaloric effect nationallicence Markin P. Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, ul. S. Kovalevskoi 18, 620990, Ekaterinburg, Russia aut Mushnikov N. Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, ul. S. Kovalevskoi 18, 620990, Ekaterinburg, Russia aut Gerasimov E. Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, ul. S. Kovalevskoi 18, 620990, Ekaterinburg, Russia aut Proshkin A. Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, ul. S. Kovalevskoi 18, 620990, Ekaterinburg, Russia aut Volegov A. Ural Federal University, ul. Mira 19, 620002, Ekaterinburg, Russia aut The Physics of Metals and Metallography Springer US; http://www.springer-ny.com 114/11(2013-11-01), 893-903 0031-918X 114:11<893 2013 114 11508 https://doi.org/10.1134/S0031918X13110082 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S0031918X13110082 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Markin P. Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, ul. S. Kovalevskoi 18, 620990, Ekaterinburg, Russia aut NATIONALLICENCE 700 1- Mushnikov N. Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, ul. S. Kovalevskoi 18, 620990, Ekaterinburg, Russia aut NATIONALLICENCE 700 1- Gerasimov E. Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, ul. S. Kovalevskoi 18, 620990, Ekaterinburg, Russia aut NATIONALLICENCE 700 1- Proshkin A. Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, ul. S. Kovalevskoi 18, 620990, Ekaterinburg, Russia aut NATIONALLICENCE 700 1- Volegov A. Ural Federal University, ul. Mira 19, 620002, Ekaterinburg, Russia aut NATIONALLICENCE 773 0- The Physics of Metals and Metallography Springer US; http://www.springer-ny.com 114/11(2013-11-01), 893-903 0031-918X 114:11<893 2013 114 11508 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer