Colloidal HfO2 nanorods with controllable defects are synthesized. An increased defect concentration is observed by high-resolution electron microscopy and by optical absorption spectroscopy. Nanocrystals with a high defect concentration exhibit ferromagnetism and superparamagnetic-like behavior (see figure). This low-temperature colloidal syntheses can produce the highly nonequilibrium defect concentrations needed to obtain ferromagnetism in closed shell oxides.
No takes yet. Share an insight, caveat, or question.
Tirosh et al. (2007) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: