Determination of Magnetocaloric Effect in La0.67Ba0.33MnO3 from Direct and Indirect Measurements

Bu çalışmada, sol-jel yöntemi ile üretilen La0.67Ba0.33MnO3 perovskit bileşiğindeki manyetokalorik etki özelliği incelenmiştir. 50 Oe uygulanan manyetik alan altında sıcaklığa bağlı manyetizasyon ölçümlerinden örneğin sıcaklığın artışıyla birlikte ferromanyetik-paramanyetik faz geçişi gösterdiği gözlenmiştir. Örneğin ?Tad değeri alan artarken ve azalırken doğrudan ölçülmüştür. Sonuçlar ?Tad'nin her iki durumda da aynıdeğeri göstermesinden manyetokalorik etkinin tersinir olduğunu göstermektedir

La0.67Ba0.33MnO3’ deki Manyetokalorik Etkinin Doğrudan ve Dolaylı Ölçümlerden Belirlenmesi

In this study, we investigated magnetocaloric properties of the perovskite compound La0.67Ba0.33MnO3 synthesized by sol-gel technique. The temperature dependent magnetization measurements at 50Oe applied magnetic field showed that the sample displays a ferromagnetic-paramagnetic transition with increasing temperature. ΔTad of the sample was measured both on increasing and decreasing fields directly. The results indicate that the magnetocaloric effect is largely reversible due to showing the same ΔTad for both cases

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