|
NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR) >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.46 [2008] >
IJPAP Vol.46(01) [January 2008] >
| Title: | Controlling the properties of Mn-Zn ferrites at high frequency by substituting In³⁺ and Al³⁺ ions |
| Authors: | Thakur, Atul
Mathur, Preeti
Singh, M |
| Keywords: | Mn-Zn ferrite
Lattice parameter
Saturation magnetization
Curie temperature |
| Issue Date: | Jan-2008 |
| Publisher: | CSIR |
| Abstract: | The effect of substitution of In³⁺ and Al³⁺ ions on the electrical and magnetic properties of Mn-Zn spinel ferrites has been investigated. The substitution of In³⁺ ions in place of Fe³⁺ions resulted in an increase of lattice parameter, because of the larger size of the substituted ions, whereas lattice pa-rameter decreased on substituting Al³⁺ ions in place of the Fe³⁺ ions, owing to their smaller size. The dc resistivity was found to increase with the substitution of In³⁺ and Al³⁺ions in the Mn-Zn ferrite system. The improvement in the dc resistivity has been observed at the expense of deterioration in the magnetic properties of Al³⁺ substituted Mn-Zn Ferrites. A significant reduction in the value of initial permeability, saturation magnetization and Curie temperature was observed with successive increase of Al³⁺ions. The saturation magnetization and initial permeability were found to increase with incor-poration of In³⁺ ions. A marked increase in the value of initial permeability was found for the Mn₀․₄Zn₀․₆In₀․₅Fe₁․₅O₄ ferrites. The Curie temperature was found to decrease with an increase of In³⁺ ion concentration. Possible mechanisms contributing to these processes have been discussed. |
| Page(s): | 42-46 |
| ISSN: | 0019-5596 |
| Source: | IJPAP Vol.46(01) [January 2008]
|
|
