The effect of Al3+ Ions concentration on DC conductivity and curie temperature of Ni-spinel ferrite

Other Title(s)

تركيز أيونات الألومنيوم على التوصيل في حالة التيار المستمر و على درجة حرارة كوري للنيكل اسبنل فيرايت

Author

Dawud, Husayn A.

Source

مجلة الجامعة الإسلامية للدراسات الطبيعية

Publisher

The Islamic University-Gaza Deanship of Research and Graduate Affairs

Publication Date

2017-03-31

Country of Publication

Palestine (Gaza Strip)

No. of Pages

7

Main Subjects

Physics

Topics

• Direct current
• Catalysis
• Inductance
• Ferrite
• Spinel group
• Curie temperature

English Abstract

A series of Al substituted Ni spinel ferrites with the empirical formula 4, where x = 0.0, 0.1, 0.2, 0.3, 0.4 and 0.5, were prepared by conventional ceramic double sintering method.

DC electric properties and initial permeability were carried out for the prepared series of samples from room temperature to well beyond the Curie point temperature ).

The thermal behavior of the DC electric conductivity for the prepared samples indicated that they act as semiconducting materials.

On the other hand, DC electric conductivity is greatly affected when the ??3 ions are increased.

The DC electrical conductivity results were interpreted in terms of electron hopping model.

The calculated activation energy in the ferrimagnetic region was less than that in paramagnetic region.

The initial permeability showed constant values from room temperature to , then it decreased sharply.

The Curie temperature was determined from DC electrical properties and initial permeability.

was found to decrease with increasing of 3 ions

Data Type

Conference Papers

Record ID

BIM-778515

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