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We have prepared crystalline nanowires (diameter ~ 50 nm, length ~ a fewmicrons) of the charge ordering manganite Pr_0.5Ca_0.5Mn_O3 using a lowreaction temperature hydrothermal method and characterized them using X-raydiffraction, transmission electron microscopy, SQUID magnetometry and electronmagnetic resonance measurements. While the bulk sample shows a charge orderingtransition at 245 K and an antiferromagnetic transition at 175 K, SQUIDmagnetometry and electron magnetic resonance experiments reveal that in thenanowires phase, a ferromagnetic transition occurs at ~ 105 K. Further, theantiferromagnetic transition disappears and the charge ordering transition issuppressed. This result is particularly significant since the charge order inPr_0.5Ca_0.5MnO_3 is known to be very robust, magnetic fields as high as 27 Tbeing needed to melt it.Comment: 12 pages including 4 figures. submitted to Applied Physics Letter

Weakening of charge order and antiferromagnetic to ferromagnetic switch over in Pr0.5Ca0.5MnO3 nanowires