Zagazig University Digital Repository
Home
Thesis & Publications
All Contents
Publications
Thesis
Graduation Projects
Research Area
Research Area Reports
Search by Research Area
Universities Thesis
ACADEMIC Links
ACADEMIC RESEARCH
Zagazig University Authors
Africa Research Statistics
Google Scholar
Research Gate
Researcher ID
CrossRef
Structural and electrical properties of nanometric Ni-Cu ferrites synthesized by citrate precursor method
Faculty
Science
Year:
2012
Type of Publication:
Article
Pages:
4-10
Authors:
Ahmed, M. A, Mansour, S. F, Afifi, M
DOI:
10.1016/j.jmmm.2011.07.010
Journal:
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS ELSEVIER SCIENCE BV
Volume:
324
Research Area:
Materials Science; Physics
ISSN
ISI:000294342200002
Keywords :
Ni-nanoferrite, Structural properties, IR spectra, Dielectric properties, Conductivity
Abstract:
Nanometric nickel copper ferrites Ni(1-x)Cu(x)Fe(2)O(4), 0 <= x <= 0.45 were prepared by the citrate precursor method. X-ray diffraction measurements confirm the formation of single phase cubic spinel structure. The lattice parameter (a) is increased with increasing Cu(2+) ion substitution. The crystallite size was calculated from XRD data and compared with that obtained from TEM micrographs. A significant increase in the density is observed with increasing Cu content. The IR absorption spectra were used for the detection and confirmation of the chemical bonds in spinel ferrites. The dielectric constant epsilon' and dielectric loss showed a decrease with increasing frequency for all samples. The decrease in the ac conductivity was ascribed to the increase in hopping length. (C) 2011 Elsevier B.V. All rights reserved.
Online
PDF
جامعة المنصورة
جامعة الاسكندرية
جامعة القاهرة
جامعة سوهاج
جامعة الفيوم
جامعة بنها
جامعة دمياط
جامعة بورسعيد
جامعة حلوان
جامعة السويس
شراقوة
جامعة المنيا
جامعة دمنهور
جامعة المنوفية
جامعة أسوان
جامعة جنوب الوادى
جامعة قناة السويس
جامعة عين شمس
جامعة أسيوط
جامعة كفر الشيخ
جامعة السادات
جامعة طنطا
جامعة بنى سويف