The physical nature of "giant" magnetocaloric and electrocaloric effects

Details The physical nature of "giant" magnetocaloric and electrocaloric effects The physical nature of "giant" magnetocaloric and electrocaloric effects

2010-12-05

arxiv.org/abs/1012.0967v2

Physics

Condensed Matter

Materials Science

3 pages, 1 figure, new text formatting

Scientific paper

Physical nature of "giant" magnetocaloric and electrocaloric effects, MCE and ECE, is explained in terms of the new fundamentals of phase transitions, ferromagnetism and ferroelectricity. It is the latent heat of structural (nucleation-and-growth) phase transitions from a normal crystal state to the orientation-disordered crystal (ODC) state where the constituent particles are engaged in thermal rotation. The ferromagnetism or ferroelectricity of the material provides the capability to trigger the structural phase transition by application, accordingly, of magnetic or electric field.

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