TITLE

Large magnetocaloric effect in manganites with charge order

AUTHOR(S)
Sande, P.; Hueso, L. E.; Migue´ns, D. R.; Rivas, J.; Rivadulla, F.; Lo´pez-Quintela, M. A.
PUB. DATE
September 2001
SOURCE
Applied Physics Letters;9/24/2001, Vol. 79 Issue 13
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
In this work, we report the magnetocaloric effect (|ΔS[sub M]|), around the charge/orbital ordering transition in the mixed valent manganite Nd[sub 0.5]Sr[sub 0.5]MnO[sub 3]. The magnitude of |ΔS[sub M]| around this first-order transition is around three times larger than that obtained around the second-order transition (ferromagnetic-metallic-to-paramagnetic-insulator) in the same compound. Actually, the magnetocaloric response around the charge-order transition is comparable to pure Gd, the rare earth with the highest magnetocaloric effect. The possibility of an easy tuning of the charge-order transition temperatures in doped manganites opens a way of investigation materials usable in magnetic refrigerators. © 2001 American Institute of Physics.
ACCESSION #
5193890

 

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