Abstract
It was found that the mixed lanthanide orthochromate La0.5Pr0.5CrO3 exhibits large negative magnetization when its magnetization–temperature (M–T) curves are measured in a FC (field-cooled) mode with low applied fields (≲5000 Oe). The compound shows a canted-antiferromagnetic transition at ∼261 K and a small peak with a positive sign at ∼220 K. Below this temperature, M decreases with decreasing temperature, passes through a zero value (M=0) around 163 K (Tcomp), and continues to decrease steeply until ∼10 K. The same qualitative behavior was observed also for La1−xPrxCrO3 with 0.2≤x≤0.8. For La0.5Pr0.5CrO3, the maximum absolute value of M below Tcomp was ∼40 times as large as that above Tcomp.
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