Structure study of manganese doped zinc oxide

Résumé

The present study deals with some physical properties of Diluted magnetic semiconductor (DMS) (Zn1-xMnxO) (0 % ? X ? 10%). The system has been synthesized in the nano form by co-precipitation method. Nanostructure features of the prepared samples have been investigated by X-Ray diffraction (XRD) and scanning electronic microscopy (SEM). Analysis of XRD patterns show that all prepared samples exhibit crystalline nature belong to the hexagonal wurtzite structure of space group C6v=p63mc (JCPDS 89-1397). The dependence of particle size D on the Mn content. The particle size increase almost linearly with Mn content up to 2%,was considered then it exhibits almost constant value up to 5%. A sharp increase in D is observed by going from 5% to 6%. All compositions exhibit, particle size D less than 100nm, so all the prepared samples lay in the nano range, The Particle size vary from 56.78 for pure ZnO to 94.61 at 6%Mn concentration. The particle size was calculated by two methods Scherer and Williamson hall methods. The two methods give different value of particle size, which is most likely due to the fact that both are approximate equations. However, both equation show that the particle size increases by increasing Mn content

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