Synthesis and characterization of CoFe2O4/ReFeO3 Multiferroic nanocomposites / Heba Ismail Abdelkareim ; Supervised Ebtesam Ateia , Mohamed khaiaralla , Salwa Fahim

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Heba Ismail Abdelkareim

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TextLanguage: English Publication details: Cairo : Heba Ismail Abdelkareim , 2022Description: 161 P . : charts,facsmilies ; 25cmOther title:

CoFe2O4/ReFeO 3تحضير و توصيف لمتراكب مالتيفرويك مكون من [Added title page title]

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Dissertation note: Thesis (Ph.D.) - Cairo University - Faculty of Science - Department of Physics Summary: The citrate-nitrate auto-combustion method is considered to prepare Lanthanum adopted rare earth (RE) elements to form RE0.7La0.3FeO3; RE = Ce, Pr, Nd, Sm and Gd) nanoparticles and CoFe2O4 samples. Then the nano composites consisted of Sm0.7La0.3FeO3 and CoFe2O4 with different composition ratios were formed. A thorough study of the structure, morphology and magnetic properties of the inspected samples has been investigated using XRD, HRTEM and VSM, respectively. Rietveld investigations show that Introducing rare earth ions into LaFeO3 decreases the Fe{u2013}O{u2013}Fe angle. Moreover, VSM results indicate that coercivity of Sm0.7La0.3FeO3 is remarkably improved relative to the parent sample. The magnetic properties of various nanocompsites at room temperature are discussed with extensive elaboration on the critical size and the magnetocrystalline anisotropy constant

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Item type	Current library	Home library	Call number	Copy number	Status	Date due	Barcode
Thesis	قاعة الرسائل الجامعية - الدور الاول	المكتبة المركزبة الجديدة - جامعة القاهرة	Cai01.12.20.Ph.D.2022.He.S (Browse shelf(Opens below))		Not for loan		01010110085623000
CD - Rom	مخـــزن الرســائل الجـــامعية - البدروم	المكتبة المركزبة الجديدة - جامعة القاهرة	Cai01.12.20.Ph.D.2022.He.S (Browse shelf(Opens below))	85623.CD	Not for loan		01020110085623000

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Thesis (Ph.D.) - Cairo University - Faculty of Science - Department of Physics

The citrate-nitrate auto-combustion method is considered to prepare Lanthanum adopted rare earth (RE) elements to form RE0.7La0.3FeO3; RE = Ce, Pr, Nd, Sm and Gd) nanoparticles and CoFe2O4 samples. Then the nano composites consisted of Sm0.7La0.3FeO3 and CoFe2O4 with different composition ratios were formed. A thorough study of the structure, morphology and magnetic properties of the inspected samples has been investigated using XRD, HRTEM and VSM, respectively. Rietveld investigations show that Introducing rare earth ions into LaFeO3 decreases the Fe{u2013}O{u2013}Fe angle. Moreover, VSM results indicate that coercivity of Sm0.7La0.3FeO3 is remarkably improved relative to the parent sample. The magnetic properties of various nanocompsites at room temperature are discussed with extensive elaboration on the critical size and the magnetocrystalline anisotropy constant

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