Physics – Condensed Matter – Strongly Correlated Electrons
14 pages pdf
The realization of semiconductors that are ferromagnetic above room temperature will potentially lead to a new generation of spintronic devices with revolutionary electrical and optical properties. Transition temperatures in doped ZnO are high but, particularly for Mn doping, the reported moments have been small. We show that by careful control of both oxygen deficiency and aluminium doping the ferromagnetic moments measured at room temperature in n-type ZnMnO and ZnCoO are close to the ideal values of 5mB and 3mB respectively. Furthermore a clear correlation between the magnetisation per transition metal ion and the ratio of the number of carriers to the number of transition metal donors was established as is expected for carrier induced ferromagnetism for both the Mn and Co doped films. The dependence of the magnetisation on carrier density is similar to that predicted for the transition temperature for a dilute magnetic semiconductor in which the exchange between the transition metal ions is through the free carriers.
Carrier-induced ferromagnetism in n-type ZnMnAlO and ZnCoAlO thin films at room temperature does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.If you have personal experience with Carrier-induced ferromagnetism in n-type ZnMnAlO and ZnCoAlO thin films at room temperature, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Carrier-induced ferromagnetism in n-type ZnMnAlO and ZnCoAlO thin films at room temperature will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-238283