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STRUCTURAL AND IR STUDIES ON CU-TI MIXED FERRITE
Faculty
Science
Year:
1994
Type of Publication:
Article
Pages:
389-393
Authors:
Elfalaky, A
DOI:
10.1007/BF00331717
Journal:
APPLIED PHYSICS A-MATERIALS SCIENCE \& PROCESSING SPRINGER VERLAG
Volume:
59
Research Area:
Materials Science; Physics
ISSN
ISI:A1994PY10600008
Keywords :
STRUCTURAL , , STUDIES , CU-TI MIXED FERRITE
Abstract:
The mixed ferrites Cu1+xTixFe2-2xO4 with x = 0, 0.1, 0.2, 0.3 and 0.4 were prepared by standard ceramic techniques. Both structural and IR investigations were carried out. The X-ray diffraction pattern showed that the prepared samples are pure spinels. It is also indicated that the system exists in two crystallographic forms, the tetragonal structure (for x = 0, 0.1) and the cubic structure (for the rest of x). Some physical properties, such as density, porosity and shrinkage were also determined throughout this study. The IR spectra revealed two bands at 575 cm-1 and 400 cm-1. These bands were assigned as v1 and v2, respectively. v1 and v2 are associated with the vibrations of the tetrahedral and octahedral groups, respectively. The cation distribution (Cu(t)2+Fe1-t3+) \{Cu1+x-t2+Ti(x)4+Fe1-2x+t3+\}O4 is proposed and used to interpret and explain the obtained results.
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