科研之友
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摘要
The principles of magnetic cooling and the magnetocaloric properties of various magnetic compounds have been presented with a special focus on materials with giant and colossal magnetocaloric parameters. The magnetocaloric properties of manganites and cobaltites have been considered. The maximum entropy change in polycrystalline La(0.7)Ca(0.3)MnO(3) for the field of 2 T reaches 8 J.kg(-1).K(-1) exceeding that of gadolinium. It is suggested that the manganites with superior magnetocaloric properties and low material costs are attractive magnetic refrigerator materials for technical applications.
- 出版日期2008
