Mohamed Saied Mohamed Mahmoud <br/><br/>
Improvement of the transport properties of Mn₁-  Zn  Fe₂O₄ doped with rare earth elements (Ce , Nd , Sm , Gd , Dy) using laser technique /  
   مطعم بعناصر ارضية نادرة ( سيريوم - نيوديميوم - سماريوم - جادولينيوم - ديسبورزيوم ) باستخدام تكنولوجيا الليزرMn - Zn تحسين الخواص الفيزيائية لفيرت 
Mohamed Saied Mohamed Mahmoud ; Supervised M. A. Ahmed , Mohy Saad Mansour 
 - Cairo :   Mohamed Saied Mohamed Mahmoud ,   2011 
 - 203P. :   charts , facsimiles ;   25cm 
<br/><br/>Thesis (M.Sc.) - Cairo University - National Institute of Laser Enhanced - Department of Laser Application in Engineering 
<br/><br/> The ferrite samples under investigation were classified into two main groups. The first one is pure Mn Zn-ferrite according to general formula Mn₁-  Zn  Fe₂O₄, where 0.1x0.7, while the second group is Mn-Zn-ferrite doped with different rare earth element (Dy, Dd ,Sm ,Nd and Ce) according to the formula Mn₀.₆Zn₀.₄RyFe₂-yO₄ where y=0.02 
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<br/><br/><label>Subjects--Index Terms: </label>FTIR  Laser irradiation  MnZn and Mn rare earth ferrite