Journal
APPLIED PHYSICS LETTERS
Volume 100, Issue 25, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4729893
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Funding
- Royal Society
- EPSRC [EP/G060940/1]
- FAPEMIG [APQ-01367-10, APQ-04163-10, APQ-01037-11]
- CNPq [308181/2009-3, 474431/2010-0]
- FAPESP-Fundacao de Amparo a Pesquisa do Estado de Sao Paulo [01/0558-3]
- EPSRC [EP/E016243/1, EP/G060940/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/E016243/1, EP/G060940/1] Funding Source: researchfish
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We use a calorimetric technique operating in sweeping magnetic field to study the thermomagnetic history-dependence of the magnetocaloric effect (MCE) in Mn0.985Fe0.015As. We study the magnetization history for which a colossal MCE has been reported when inferred indirectly via a Maxwell relation. We observe no colossal effect in the direct calorimetric measurement. We further examine the impact of mixed-phase state on the MCE and show that the first order contribution scales linearly with the phase fraction. This validates various phase-fraction based methods developed to remove the colossal peak anomaly from Maxwell-based estimates. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4729893]
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