Paper Information

Journal:   ADVANCED CERAMICS PROGRESS   FALL 2015 , Volume 1 , Number 3; Page(s) 22 To 27.
 
Paper: 

MICROSTRUCTURED AND MAGNETIC PROPERTIES OF SR2CO1.7MG0.3FE11.2SN0.4ZN0.4O22 HEXAFERRITE SYNTHESIZED BY AUTO-COMBUSTION SOL-GEL METHO

 
 
Author(s):  JAFARI A.*, HONARBAKHSH RAOUF A., MIRZAEE O., ALIZAD FARZIN Y.
 
* FACULTY OF MATERIALS ENGINEERING AND METALLURGY, SEMNAN UNIVERSITY, SEMNAN, IRAN
 
Abstract: 

A single phase Y-type hexagonal ferrite Sr2Co1.7Mg0.3Fe11.2Sn0.4Zn0.4O22 was synthesized by sol–gel auto combustion method. The microstructured and magnetic properties of this Y-type hexagonal ferrite composition have been investigated. Different experimental techniques such as differential thermal and thermo-gravimetric analyses, X-ray diffraction, Fourier transform infrared spectroscopy, high resolution field emission scanning electron microscopy and vibrating sample magnetometry were used to investigate the sample. The X-ray diffraction (XRD) patterns confirm single phase Y-type hexagonal ferrite powders were obtained after calcinations at 1000oC and showed that the crystallite size is 44 nm.
The microstructures of the pure powders appeared as a hexagonal platelet-like structure and particles size was 90-210 nm.The saturation magnetization (Ms) and the coercivity (Hc) of the samples were in the range, 28.34–48.47 emu/g and 637-1108 Oe, respectively. The heat treatment temperature increased the magnetization, following a decrease in coercivity due to intermediate phases replacement by single Y-type hexaferrite, Which can be used as soft magnetic materials in multilayer inductors for high frequency applications.

 
Keyword(s): Y-TYPE HEXAFERRITE, SOL-GEL AUTO COMBUSTION, MAGNETIC PROPERTIES, CALCINATION TEMPERATURE
 
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