Transition metal dopants essential for producing ferromagnetism in metal oxide nanoparticles

Non-DMS related ferromagnetism in transition metal doped zinc oxide

We review pitfalls in recent efforts to make a conventional semiconductor, namely ZnO, ferromagnetic by means of doping with transition metal ions. Since the solubility of those elements is rather low, formation of secondary phases and the creation of defects upon low temperature processing can lead to unwanted magnetic effects. Among others, ion implantation is a method of doping, which is hig...

Transition Metal-Doped Oxide Semiconductor Exhibiting Room-Temperature Ferromagnetism

Antimicrobial Effect of Transition Metal Oxide Nanoparticles

Patterning Superatom Dopants on Transition Metal Dichalcogenides.

This study describes a new and simple approach to dope two-dimensional transition metal dichalcogenides (TMDCs) using the superatom Co6Se8(PEt3)6 as the electron dopant. Semiconducting TMDCs are wired into field-effect transistor devices and then immersed into a solution of these superatoms. The degree of doping is determined by the concentration of the superatoms in solution and by the length ...

Probing the local coordination environment for transition metal dopants in zinc oxide nanowires.

It is hypothesized that a highly ordered, relatively defect-free dilute magnetic semiconductor system should act as a weak ferromagnet. Transition-metal-doped ZnO nanowires, being single crystalline, single domain, and single phase, are used here as a model system for probing the local dopant coordination environments using X-ray absorption spectroscopy and diffraction. Our X-ray spectroscopic ...