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2005

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/10922

Giant heat dissipation at the low temperature reversible-irreversible transition in Gd5Ge4

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Abstract

The heat exchanged at the low-temperature first-order magnetostructural transition is directly measured in Gd5Ge4 . Results show that the origin and the temperature dependence of the heat exchanged varies with the reversible/irreversible character of the first-order transition. In the reversible regime, the heat exchanged by the sample is mostly due to the latent heat at the transition and decreases with decreasing temperature, while in the irreversible regime, the heat is irreversibly dissipated and increases strongly with decreasing temperature, reaching a value of 237 J/kg at 4 K.

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http://dx.doi.org/10.1103/PhysRevB.72.172402

Subject

Propietats magnètiques, Temperatures baixes, Transformacions de fase (Física estadística), Equacions d'estat

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Magnetic properties, Low temperatures, Phase transformations (Statistical physics), Equations of state

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Articles publicats en revistes (Física de la Matèria Condensada)

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CASANOVA I FERNÀNDEZ, Fèlix, LABARTA, Amílcar and BATLLE GELABERT, Xavier. Giant heat dissipation at the low temperature reversible-irreversible transition in Gd5Ge4. Physical Review B. 2005. Vol. 72, num. 17, pags. 172402-1-172402-4. ISSN 0163-1829. [consulted: 9 of October of 2026]. Available at: https://hdl.handle.net/2445/10922

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