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W1497432001 abstract "In the present work, we analyze the influence of the charge-ordering on the magnetic entropy change of Pr1-xCaxMnO3 manganites (0.20<x<0.95). The samples with x<0.30 and x>0.90 present the usual ferromagnetic and antiferromagnetic behavior, peaking at the Curie and Néel temperature, respectively. In contrast, for the samples with charge-ordering (0.30<x<0.90), a much smaller positive peak on the magnetic entropy change was observed around the charge-ordering temperature TCO. This effect is associated to a negative contribution from the spin ordering ΔSspin, which is superimposed to a positive contribution due the charge-ordering ΔSCO. We could also appraise ΔSCOmax as a function of Ca content (0.30<x<0.90), under 4 T of magnetic field change. ΔSCOmax vanishes for the limits x∼0.30 and ∼0.90, and presents a deep minimum around x∼0.50, with two maxima at x∼0.35 and 0.65." @default.
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W1497432001 date "2005-04-01" @default.
W1497432001 modified "2023-09-25" @default.
W1497432001 title "Charge-ordering contribution to the magnetic entropy change of <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML altimg=si8.gif overflow=scroll><mml:mo stretchy=false>(</mml:mo><mml:mi>Pr</mml:mi><mml:mo>,</mml:mo><mml:mi>Ca</mml:mi><mml:mo stretchy=false>)</mml:mo><mml:msub><mml:mrow><mml:mi>MnO</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:math> manganites" @default.
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W1497432001 doi "https://doi.org/10.1016/j.jmmm.2004.11.340" @default.
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