Effect of Isovalent Cation Substitution on the Thermal, Caloric, and Magnetocaloric Properties of the (La1 – yEuy)0.7Pb0.3MnO3 Manganites
URI (for links/citations):https://link.springer.com/article/10.1134%2FS1063783419010116
Kartashev A. V
Gorev, M. V.
Mikhashenok, N. V.
Институт инженерной физики и радиоэлектроники
Journal Name:Physics of the Solid State
Journal Quartile in Scopus:Q3
Journal Quartile in Web of Science:Q4
Bibliographic Citation:Kartashev A. V. Effect of Isovalent Cation Substitution on the Thermal, Caloric, and Magnetocaloric Properties of the (La1 – yEuy)0.7Pb0.3MnO3 Manganites [Текст] / Kartashev A. V, Flerov I.N, M. V. Gorev, N. V. Mikhashenok // Physics of the Solid State. — 2019. — Т. 61 (№ 1). — С. 62-68
Текст статьи не публикуется в открытом доступе в соответствии с политикой журнала.
Crystalline samples of the (La1 – yEuy)0.7Pb0.3MnO3 (y = 0, 0.2, 0.4, 0.5, 0.6, and 0.8) manganite solid solutions have been grown. Temperature dependences of the specific heat, thermal expansion, and highintensity magnetocaloric effect have been investigated. A comparative analysis of the effect of isovalent cationic substitution on the thermal and caloric parameters of the ferromagnetic phase transition has been made. It has been shown that the growth of the Eu atom concentration leads to a decrease in the phase transition entropy and an increase in the baric coefficient dT/dp. Field and temperature dependences of the magnetocaloric effect have been established. It is demonstrated that, varying the ratio of cations, one can obtain the solid solutions with the maximum magnetocaloric effect value in fields of up to 6 kOe in a temperature range of 90–340 K. Owing to the similar reduced relative cooling powers, the investigated solid solutions can be used as reference solid-state cooling media in designing the cascade cooling systems.