Spectral studies of Co substituted Ni-Zn ferrites

被引:40
作者
Amer, M. A. [1 ]
Tawfik, A. [1 ]
Mostafa, A. G. [2 ]
El-Shora, A. F. [1 ]
Zaki, S. M. [1 ]
机构
[1] Tanta Univ, Fac Sci, Dept Phys, Tanta, Egypt
[2] Al Azhar Univ, Fac Sci, Dept Phys, ME Lab, Cairo, Egypt
关键词
Ni-Zn-Co ferrites; Mossbauer; X-rays; Infrared; Interionic distance; Resonant frequency; STRUCTURAL-CHARACTERIZATION; INTERIONIC DISTANCE; HIGH-PRESSURE; ABSORPTION; NICKEL; ZINC;
D O I
10.1016/j.jmmm.2010.12.036
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The spinel ferrites Zn0.35Ni0.65 xCoxFe2O4, 0 <= x <= 1, have been prepared using the standard ceramic technique. Room temperature Mossbauer, X-ray and infrared IR spectra were used for carrying out this study. X-ray patterns reveal that all the samples have single-phase cubic spinel structure. The Mossbauer spectra of the samples show a paramagnetic phase for x=0 and a six-line magnetic pattern and a central paramagnetic phase for x >= 0.1. They are analyzed and attributed to two magnetic subpatterns and two quadrupole doublets due to Fe3+ ions at the tetrahedral A-sites and octahedral B-sites. Four absorption bands are observed in IR spectra. They confirm the spinel structure of the samples and existence of Fe3+ ions in the sample sublattices. The deduced hyperfine interactions, lattice parameters, absorption band positions and intensities and force constant are found to be dependent on the substitution factor x, where the cation distribution is estimated. The hyperfine magnetic fields, magnetization and lattice resonant frequency are found to be dependent on the interionic distance. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码:1445 / 1452
页数:8
相关论文
共 21 条
[1]   Structural and electrical studies on La3+ substituted Ni-Zn [J].
Ahmed, MA ;
Ateia, E ;
Salah, LM ;
El-Gamal, AA .
MATERIALS CHEMISTRY AND PHYSICS, 2005, 92 (2-3) :310-321
[2]  
ALI AI, 2010, THESIS TANTA U EGYPT
[3]  
Amer MA, 2006, PHYS LOW-DIMENS STR, V2, P96
[4]   The effect of interionic distance on the properties of Al-doped Mn-Zn ferrites [J].
Amer, M. A. ;
Saafan, S. A. ;
Attia, S. M. .
EUROPEAN PHYSICAL JOURNAL-APPLIED PHYSICS, 2006, 35 (03) :201-210
[5]   Spectral studies of the ferrite system Zn0.5Cu0.5AlxFe2-xO4 [J].
Amer, MA .
HYPERFINE INTERACTIONS, 2000, 131 (1-4) :29-42
[6]  
[Anonymous], 2005, EGYPT J SOLID
[7]  
[Anonymous], J AL AQSA U
[8]   STRUCTURAL CHARACTERIZATION OF POLYCRYSTALLINE GALLIUM-SUBSTITUTED COBALT FERRITES [J].
AREAN, CO ;
BLANCO, JLR ;
GONZALEZ, JMR ;
FERNANDEZ, MCT .
JOURNAL OF MATERIALS SCIENCE LETTERS, 1990, 9 (02) :229-230
[9]   MOSSBAUER STUDIES OF CHARGE TRANSFER PROCESS IN SYSTEM ZNXFE3-XO4 [J].
DOBSON, DC ;
LINNETT, JW ;
RAHMAN, MM .
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1970, 31 (12) :2727-&
[10]   Electrical conductivity of nickel-zinc and Cr substituted nickel-zinc ferrites [J].
El-Sayed, AM .
MATERIALS CHEMISTRY AND PHYSICS, 2003, 82 (03) :583-587