Structure and magnetocaloric properties of La1-xKxMnO3 manganites

Details Structure and magnetocaloric properties of La1-xKxMnO3 manganites Structure and magnetocaloric properties of La1-xKxMnO3 manganites

2012-02-20

arxiv.org/abs/1202.4432v1

Physica B406(2011)885-889

Physics

Condensed Matter

Strongly Correlated Electrons

14 pages, 6 figures, 3 tables

Scientific paper

10.1016/j.physb.2010.12.021

A technology of obtaining the single-phase ceramic samples of La1-xKxMnO3 manganites and the dependence of their structural parameters on the content of potassium has been described. Magnetocaloric effect (MCE) in the obtained samples has been measured by two independent methods: by classical direct methodic and by a method of magnetic field modulation. The values of MCE obtained by both methods have been substantially differed. The explanation of the observed divergences is given. The correlation between the level of doping and MCE value has been defined. The value of TC determined by the MCE maximum has been conformed to the literature data received by other methods.

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