Implicit measurement of the latent heat in a magnetocaloric NiMnIn Heusler alloy

The latent heat linked with the first-order transformation of a NiMnIn Heusler alloy has been studied through direct measurements of the adiabatic temperature change, ΔTad, during magnetization process. The experimental procedure used guarantees independent data points and negates any contribution o...

Full description

Saved in:
Bibliographic Details
Published in:Journal of applied physics 2013-05, Vol.113 (17)
Main Authors: Ghahremani, Mohammadreza, ElBidweihy, Hatem, Bennett, Lawrence H., Della Torre, Edward, Zou, Min, Johnson, Francis
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The latent heat linked with the first-order transformation of a NiMnIn Heusler alloy has been studied through direct measurements of the adiabatic temperature change, ΔTad, during magnetization process. The experimental procedure used guarantees independent data points and negates any contribution of hysteretic losses to the magnetocaloric effect. Thus, the differences between the magnitudes of ΔTad measurements during the magnetization with the initial temperature change directions from low-to-high and high-to-low are solely attributed to the latent heat exchange, which accompanies the irreversible structural first-order transformation. An estimate of the latent heat inducing such differences is about 0.292 J/g.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.4801739