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The composition of 2 at% Cr-doped ZnO nanoparticles was synthesized by the hydrothermal method under high magnetic field. Morphologies of the sample obtained under high magnetic field are grown along c-axis direction. The sample prepared under 4 Tesla magnetic field reveals room temperature ferromagnetic behavior, but the sample fabricated under no magnetic field shows paramagnetism. Raman and photoluminescence...
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