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magnetocaloric
magnetocaloric adj. 
/maɡˌniːtə(ʊ)kəˈlɒrɪk/, /maɡˌniːtə(ʊ)ˈkalərɪk/, /mæɡˌnidoʊˈkælərɪk/, /mæɡˌnɛdoʊkəˈlɔrɪk/, /mæɡˌnɛdoʊˈkælərɪk/ [after French magnétocalorique (apparently coined by P. Weiss & A. Piccard 1917, in Jrnl. de physique 7 103)] designating the reversible change of temperature that accompanies a change in the magnetization of a paramagnetic or ferromagnetic material.
Brit. /maɡˌniːtə(ʊ)kaˈlɒrɪk/
, /maɡˌniːtə(ʊ)kaˈlɒrɪk//maɡˌniːtə(ʊ)kəˈlɒrɪk//maɡˌniːtə(ʊ)ˈkalərɪk/U.S. /mæɡˌnidoʊkəˈlɔrɪk/
, /mæɡˌnidoʊkəˈlɔrɪk//mæɡˌnidoʊˈkælərɪk//mæɡˌnɛdoʊkəˈlɔrɪk//mæɡˌnɛdoʊˈkælərɪk/ΘΚΠ
the world > matter > physics > electromagnetic radiation > magnetism > types of magnetism > [adjective] > exhibiting temperature change
magnetocaloric1921
1921 Sci. Abstr. A. 24 724 (heading) Magneto~caloric effect.
1937 J. W. T. Spinks tr. G. Herzberg Atomic Spectra vi. 211 The magnetocaloric effect [in paramagnetic substances] is so small at room temperature that it cannot be observed.
1965 A. H. Morrish Physical Princ. Magn. iii. 83 Since for a normal paramagnetic salt (∂M/∂T)H is negative, an increase in the field produces a heating and conversely decreasing H gives rise to a temperature drop. This is often called the magnetocaloric effect. The important application of this effect is in the production of temperatures below 1°K.
1989 Sci. Amer. Feb. 49/1 This magnetocaloric effect can be exploited in a heat pump.
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