Тип публикации: статья из журнала
Год издания: 2010
Идентификатор DOI: 10.1016/j.jmmm.2009.10.026
Ключевые слова: Manganites, Magnetic phase transition, Heat capacity, Magnetocaloric effect, Adiabatic calorimeters, Heat capacities, Magnetic phase transitions, Magneto-caloric effects, Multi-element, Nonmagnetics, Relative cooling power, Temperature range, Europium, Lead, Manganese compounds, Oxide minerals, Specific heat, Phase transitions
Аннотация: Heat capacity and intensive magnetocaloric effect (MCE) in manganites (La1-yEuy)(0.7)Pb0.3MnO3[y=0.2; 0.6] (LEPM) were investigated by means of adiabatic calorimeter. The heat capacity anomaly as well as the values of both the intensive (Delta T-AD) and the extensive (Delta S-MCE) MCE were found to decrease upon increased replacement of La with nonmagnetic Eu. However, because of widening of the MCE peaks, the LEPM compounds show the relative cooling power, RCP/Delta H, comparable to other solid solutions of manganites. Owing to strong effect of Eu -> La substitution on the Curie temperature, LEPM might have potential as the solid state refrigerants in multi-element cooling apparatus operating in a wide temperature range. (C) 2009 Elsevier B.V. All rights reserved.
Издание
Журнал: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Выпуск журнала: Vol. 322, Is. 6
Номера страниц: 622-627
ISSN журнала: 03048853
Место издания: AMSTERDAM
Издатель: ELSEVIER SCIENCE BV
Персоны
- Kartashev A.V. (L.V. Kirensky Institute,Physics SB RAS)
- Flerov I.N. (Siberian Federal University)
- Volkov N.V. (Siberian Federal University)
- Sablina K.A. (L.V. Kirensky Institute,Physics SB RAS)
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