Who discovered the magnetocaloric effect? Warburg, Weiss, and the connection between magnetism and heat

Anders Smith

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

A magnetic body changes its thermal state when subjected to a changing magnetic field. In particular, if done under adiabatic conditions, its temperature changes. For the past 15 years the magnetocaloric effect has been the focus of significant research due to its possible application for efficient refrigeration near room temperature. At the same time, it has become common knowledge within the magnetic refrigeration research community that the magnetocaloric effect was discovered by the German physicist E. Warburg in 1881. We re-examine the original literature and show that this is a misleading reading of what Warburg did, and we argue that the discovery of the effect should instead be attributed to P. Weiss and A. Piccard in 1917.
Original languageEnglish
JournalEuropean Physical Journal H
Volume38
Issue number4
Pages (from-to)507-517
ISSN2102-6459
DOIs
Publication statusPublished - 2013

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