Anisotropic ferromagnetism in substituted zinc oxide.

Direct kinetic correlation of carriers and ferromagnetism in Co2+: ZnO.

The hypothesis that high-Curie-temperature ferromagnetism in cobalt-doped ZnO (Co2+: ZnO) is mediated by charge carriers was tested by controlled introduction and removal of the shallow donor interstitial zinc. Using oriented epitaxial Co2+: ZnO films grown by chemical vapor deposition, kinetics measurements demonstrate a direct correlation between the oxidative quenching of ferromagnetism and ...

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

Articles you may be interested in Bias voltage-controlled ferromagnetism switching in undoped zinc oxide thin film memory device Appl. Electrical control of exchange bias via oxygen migration across CoO-ZnO nanocomposite barrier Appl. High repetition rate ultrashort laser cuts a path through fog Appl.

Defect Induced Ferromagnetism in Undoped ZnO Nanoparticles

Theoretical description of carrier mediated magnetism in cobalt doped ZnO.

Substitutional cobalt in ZnO has a weak preference for antiferromagnetic ordering. Stabilization of ferromagnetism is achieved through n-type doping, which can be understood through a band coupling model. However, the description of the transition to a ferromagnetic ground state varies within different levels of band theory; issues arise due to the density functional theory underestimation of t...

On the origin of high-temperature ferromagnetism in the low-temperature-processed Mn-Zn-O system.

The recent discovery of ferromagnetism above room temperature in low-temperature-processed MnO(2)-ZnO has generated significant interest. Using suitably designed bulk and thin-film studies, we demonstrate that the ferromagnetism in this system originates in a metastable phase rather than by carrier-induced interaction between separated Mn atoms in ZnO. The ferromagnetism persists up to approxim...