Shimaa Saeed Elkhiyami <br/><br/>
Structure and electric studies of diluted magnetic insulators /  
 دراسة التركيب والخواص الكهربية لبعض العوازل المغناطيسية المخففة 
Shimaa Saeed Elkhiyami ;Supervised Mohga F.Mostafa , Omar Osman 
 - Cairo :   Shimaa Saeed Elkhiyami ,   2012 
 - 265P. :   charts , facsimiles ;   25cm 
<br/><br/>Thesis (Ph.D.) - Cairo University - Faculty of Science - Department of Physics 
<br/><br/> Aim of the work : Relaxor behavior in ferroelectric materials is a result of compositionally induced disorder or frustration . This behavior has been extensively studied in disordered ABO₃ perovskites and also in mixed crstals of hydrogen bonded ferroelectrics and antiferroelectrics A₂ BO₄ [1]. The first halide perovskite relaxor was reported by Mostafa et al . in the perovskite [(CH₂)₃(NH₃)₂] Cd₁-  xCux C1₄, x = 0.4 and 0.7 [2,3]  
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<br/><br/><label>Subjects--Index Terms: </label>Dielectric response  Ferroelectrics  trandsport properties