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Doped ZnO: a case study for the influence of solvent and structure

Guylhaine Clavel 1Marc-Georg Willinger 1,3David Zitoun 2Nicola Pinna 1,4

1. Universidade de Aveiro, Departamento de Fisica and CICECO (UA), Campus de Santiago, Aveiro 3810-193, Portugal
2. Institut Charles Gerhardt, CC15, Place eugène Bataillon, Montpellier 34095, France
3. Max-Planck-Gesellschaft, Fritz-Haber-Institut, Faradayweg 4-6, Berlin D-14195, Germany
4. Martin Luther University (MLU), Kurt-Mothes-Strasse 1, Halle 06120, Germany


Transition metal doped ZnO have been theoretically predicted to be ferromagnetic at room temperature. The solution phase synthesis of ZnO usually leads to very anisotropic structures like rods or platelets. We have studied the influence of reactive medium on the oriented growth both in surfactant and solvent directed syntheses. Then, the influence of doping/alloying on the morphology has been studied as a function of the chemical nature and amount of the transition metal (TM) element. Obviously, the results show a very strong effect of the TM on the morphology with sometimes exotic shapes like multipods formed under specific conditions. Nevertheless, the systems surprisingly exhibit a very sensitive variation of the physical properties (in that case magnetic) as a function of the reactive medium.


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Presentation: Invited at E-MRS Fall Meeting 2007, Symposium A, by David Zitoun
See On-line Journal of E-MRS Fall Meeting 2007

Submitted: 2007-03-28 12:44
Revised:   2009-06-07 00:44