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
DIELECTRIC BEHAVIOR OF CU1-XTIXFE2O4 FERRITES
Faculty
Science
Year:
1994
Type of Publication:
Article
Pages:
461-470
Authors:
MAZEN, SA, Hashem, HA, ABDALLAH, MH, ELGHANDOOR, MA
DOI:
10.1002/pssa.2211440227
Journal:
PHYSICA STATUS SOLIDI A-APPLIED RESEARCH AKADEMIE VERLAG GMBH
Volume:
144
Research Area:
Materials Science; Physics
ISSN
ISI:A1994PF76200026
Keywords :
DIELECTRIC BEHAVIOR , CU1-XTIXFE2O4 FERRITES
Abstract:
The ac conductivity, dielectric constant, dielectric loss, and dielectric loss tangent of mixed ferrites Cu1-xTixFe2O4 (where x = 0 to 0.7) are measured at various frequencies and different temperatures. At different temperatures, it was observed that the ac conductivity (\$) over tilde sigma for f < 10(4) Hz at x < 0.4 is f independent, at x > 0.4 increases slowly with f and for f > 10(4) Hz (\$) over tilde sigma increases strongly with f. The dielectric loss (epsilon'') decreases with increasing frequency much more rapid than the dielectric constant (epsilon'). The general trend for all compositions is that epsilon' and epsilon'' decrease with increasing frequency, and the average decrease rates are 77.5 and 98.9\%, respectively. For x less than or equal to 0.4, the activation energy Delta E((\$) over tilde sigma) is nearly constant (about 0.30 eV), but for x > 0.4, Delta E((\$) over tilde sigma) increases rapidly with increasing composition x. For x less than or equal to 0.4, not noticeable change in dielectric values (epsilon' and epsilon'') was observed at room temperature and constant frequency 10(5) Hz, but tan delta decreases rapidly with increase of Ti4+ content.
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