Absence of ferromagnetism in Mn- and Co-doped ZnO

Sample preparation and annealing effects on the ferromagnetism in Mn-doped ZnO

Room Temperature Ferromagnetism in Cobalt Doped ZnO Nanoparticles

In this work we report synthesis and magnetic characterization of cobalt doped ZnO nanoparticles (with different percent of doped cobalt oxide). Synthesis of the materials was carried out at room temperature by polyacrylamide-gel method, using zink sulfate and cobalt nitrate as source materials, acrylamide as monomer and N,N-methylene bisacrylamide as a lattice reagent. Characterization of the ...

Room-temperature ferromagnetism in carbon-doped ZnO.

We report ferromagnetism in carbon-doped ZnO. Our first-principles calculations based on density functional theory predicted a magnetic moment of 2.02 mu(B) per carbon when carbon substitutes oxygen in ZnO, and an ferromagnetic coupling among magnetic moments of the carbon dopants. The theoretical prediction was confirmed experimentally. C-doped ZnO films deposited by pulsed-laser deposition sh...

Room Temperature Ferromagnetism in Cobalt Doped ZnO Nanoparticles

In this work we report synthesis and magnetic characterization of cobalt doped ZnO nanoparticles (with different percent of doped cobalt oxide). Synthesis of the materials was carried out at room temperature by polyacrylamide-gel method, using zink sulfate and cobalt nitrate as source materials, acrylamide as monomer and N,N-methylene bisacrylamide as a lattice reagent. Characterization of the ...

MnO nanoparticles as the cause of ferromagnetism in bulk dilute Mn-doped ZnO

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