Rabea Mohammed Mohammed Kershi  <br/><br/>
Effect of rare earth ions dilution on the magnetic and transport properties of hexagonal ferrite /  
 تأثير التخفيف بايونات العناصر الارضية النادرة على الخواص المغناطيسية والانتقالية للفرايت السداسى 
Rabea Mohammed Mohammed Kershi ; Supervised Mohammed Ali Ahmed , Nagwa Okasha , Mona Kamal Auof 
 - Cairo :   Rabea Mohammed Mohammed Kershi ,   2009 
 - 253 Leaves :   charts , facsimiles ;   30cm 
<br/><br/>Thesis (Ph.D.) - Cairo University - Faculty of Science - Department of Physics 
<br/><br/> The main study in the thesis is the investigation of the structure electric and magnetic properties of three groups W-type hexagonal ferrites samples with different compositions: A first group with the formula BaCoZn1-xMgxFe16O27;0-<X-<0.6. These super properties of this composition open a new area and a wide range of applications 
<br/><br/>
<br/><br/><label>Subjects--Index Terms: </label>Magnetic Rare earth ions Transport