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Role of Surfactant on the Ferromagnetic Properties of (Li, Mn) Doped ZnO Nanoparticles: An EPR Study

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Nanoparticles of Zn0.96Mn0.03Li0.01O were synthesized by a low-temperature solid-state pyrolitic reaction, followed by a surfactant (AOT)-assisted calcination at 675 K. Transmission electron microscopy images and Rietveld refinement of X-ray diffraction data revealed that these samples are monophasic with wurtzite structure. DC magnetization measurements of surfactant treated Zn0.96Mn0.03Li0.01O nanoparticles showed enhanced ferromagnetism compared to that of the untreated Zn0.96Mn0.03Li0.01O nanoparticles. A distinct ferromagnetic resonance (FMR) signal observed in the EPR spectra of AOT treated Zn0.96Mn0.03Li0.01O nanoparticles further confirmed its ferromagnetic nature.
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Keywords: ESR; FERROMAGNETISM; NANOPARTICLES; SPINTRONICS; TEM; ZNO

Document Type: Short Communication

Publication date: August 1, 2011

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  • Nanoscience and Nanotechnology Letters (NNL) is a multidisciplinary peer-reviewed journal consolidating nanoscale research activities in all disciplines of science, engineering and medicine into a single and unique reference source. NNL provides the means for scientists, engineers, medical experts and technocrats to publish original short research articles as communications/letters of important new scientific and technological findings, encompassing the fundamental and applied research in all disciplines of the physical sciences, engineering and medicine.
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