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Enhanced magnetic properties in ZnCoAlO caused by exchangecoupling to Co nanoparticles
Qi Feng, Wala Dizayee, Xiaoli Li +12
Wereport the results of a sequence of magnetisation and magneto-optical studies on laser ablated thin films of ZnCoAlO and ZnCoO that contain a small amount of metallic cobalt. The…
Spin polarized transport current in n-type co-doped ZnO thin films measured by Andreev spectroscopy
Karen A Yates, Anthony J Behan, James R Neal +6
We use point contact Andreev reflection measurements to determine the spin polarization of the transport current in pulse laser deposited thin films of ZnO with 1% Al and with and…
Two magnetic regimes in doped ZnO corresponding to a dilute magnetic semiconductor and a dilute magnetic insulator
A. J. Behan, A. Mokhtari, H. J. Blythe +5
Films of ZnO doped with magnetic ions, Mn and Co and, in some cases, with Al have been fabricated with a very wide range of carrier densities. Ferromagnetic behaviour is observed i…