Improvement of electric and magnetic properties for li spinel ferrite by divalent Ni2+ ions substitution

العناوين الأخرى

تأثير أيونات النيكل الثنائية على الخواص الكهربية و المغناطيسية لليثيوم أسبنل فيريت

مقدم أطروحة جامعية

al-Hulw, Ilham Abd al-Fattah Ibrahim

مشرف أطروحة جامعية

Dawud, Husayn Abd al-Karim

الجامعة

الجامعة الإسلامية

الكلية

كلية العلوم

القسم الأكاديمي

قسم الفيزياء

دولة الجامعة

فلسطين (قطاع غزة)

الدرجة العلمية

ماجستير

تاريخ الدرجة العلمية

2017

الملخص الإنجليزي

In the present work magnetic, electric and dielectric properties are investigated for mixed ferrite Li0.5(1-x)NixFe2.5-0.5xO4 ( where x=0.0, 0.2, 0.4, 0.6, 0.8 and 1.0) which are prepared from high purity oxides using standard ceramic technique.

The net magnetization (M) was measured at room temperature in the range of the applied field [200-2650 (A/m)].

The results indicated that the M decreased with increasing of the ions.

The highest value of M was registered for the sample of x=0.0, where the lowest value was registered for the samples of x=1.0.

The inductance was measured as a function of temperature to determine the Curie temperature (It is the temperature which the material transform from ferrimagnetic to paramagnetic .

It was found that, the Curie temperature decreased with increasing of the Ni2+ ions.

Complex dielectric constant ( ), dielectric loss tangent ( ) and AC conductivity ( ) were investigated in the frequency range of at room temperature.

It was found that, the and were decreased continuously, while was increased with increasing of the applied frequency.

التخصصات الرئيسية

الفيزياء

عدد الصفحات

56

قائمة المحتويات

• APA
• MLA
• AMA

لغة النص

الإنجليزية

نوع البيانات

رسائل جامعية

رقم السجل

BIM-902555