Effect of Isovalent Cation Substitution on the Thermal, Caloric, and Magnetocaloric Properties of the (La1 – yEuy)0.7Pb0.3MnO3 Manganites
Скачать файл:
URI (для ссылок/цитирований):
https://link.springer.com/article/10.1134%2FS1063783419010116https://elib.sfu-kras.ru/handle/2311/129268
Автор:
Kartashev A. V
Flerov I.N
Gorev, M. V.
Mikhashenok, N. V.
Коллективный автор:
Институт инженерной физики и радиоэлектроники
Кафедра теплофизики
Дата:
2019Журнал:
Physics of the Solid StateКвартиль журнала в Scopus:
Q3Квартиль журнала в Web of Science:
Q4Библиографическое описание:
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. 62-68Текст статьи не публикуется в открытом доступе в соответствии с политикой журнала.
Аннотация:
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.