Frequency Dependence of AC Resistivity and Dielectric Behavior of Lithium-Manganese Soft Ferrites
Lithium–Manganese ferrites having the chemical formula (Li0.5-0.5x Mnx Fe2.5-0.5x O4), (0 ≤ x ≤ 1) were prepared by double sintering powder processing. The density of the ferrite increased with Mn content while the porosity was noticed to decrease. The dielectric constant was found to increase at h...
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
University of Baghdad
2011-01-01
|
| Series: | Iraqi Journal of Physics |
| Subjects: | |
| Online Access: | https://ijp.uobaghdad.edu.iq/index.php/physics/article/view/809 |
| _version_ | 1797871319925129216 |
|---|---|
| author | Muthafar F. Al-Hilli |
| author_facet | Muthafar F. Al-Hilli |
| author_sort | Muthafar F. Al-Hilli |
| collection | DOAJ |
| description |
Lithium–Manganese ferrites having the chemical formula (Li0.5-0.5x Mnx Fe2.5-0.5x O4), (0 ≤ x ≤ 1) were prepared by double sintering powder processing. The density of the ferrite increased with Mn content while the porosity was noticed to decrease. The dielectric constant was found to increase at high frequencies more rapidly than the low ones. The dielectric constant found to decrease with Mn content. The decrease in loss factor with frequency agreed with Deby’s type relaxation process. A maximum of dielectric loss factor was observed when the hopping frequency is equal to the external electric field frequency. Manganese substitution reduced the dielectric loss in ferrite. The variation of tanδ with frequency shows a similar nature to that of ε’’ with frequency. The resistivity found to decrease with frequency, and this behavior with frequency was discussed according to Koop’s theorem. Maximum resistivity was obtained at x = 0.8 doping level of Mn.
|
| first_indexed | 2024-04-10T00:40:54Z |
| format | Article |
| id | doaj.art-9f764823a8c448eb821004888b295032 |
| institution | Directory Open Access Journal |
| issn | 2070-4003 2664-5548 |
| language | English |
| last_indexed | 2024-04-10T00:40:54Z |
| publishDate | 2011-01-01 |
| publisher | University of Baghdad |
| record_format | Article |
| series | Iraqi Journal of Physics |
| spelling | doaj.art-9f764823a8c448eb821004888b2950322023-03-14T05:47:59ZengUniversity of BaghdadIraqi Journal of Physics2070-40032664-55482011-01-01914Frequency Dependence of AC Resistivity and Dielectric Behavior of Lithium-Manganese Soft FerritesMuthafar F. Al-Hilli0Department of Physics, College of Science, University of Baghdad Lithium–Manganese ferrites having the chemical formula (Li0.5-0.5x Mnx Fe2.5-0.5x O4), (0 ≤ x ≤ 1) were prepared by double sintering powder processing. The density of the ferrite increased with Mn content while the porosity was noticed to decrease. The dielectric constant was found to increase at high frequencies more rapidly than the low ones. The dielectric constant found to decrease with Mn content. The decrease in loss factor with frequency agreed with Deby’s type relaxation process. A maximum of dielectric loss factor was observed when the hopping frequency is equal to the external electric field frequency. Manganese substitution reduced the dielectric loss in ferrite. The variation of tanδ with frequency shows a similar nature to that of ε’’ with frequency. The resistivity found to decrease with frequency, and this behavior with frequency was discussed according to Koop’s theorem. Maximum resistivity was obtained at x = 0.8 doping level of Mn. https://ijp.uobaghdad.edu.iq/index.php/physics/article/view/809Mn-Li ferrites, Dielectric properties,AC resistivity. |
| spellingShingle | Muthafar F. Al-Hilli Frequency Dependence of AC Resistivity and Dielectric Behavior of Lithium-Manganese Soft Ferrites Iraqi Journal of Physics Mn-Li ferrites, Dielectric properties,AC resistivity. |
| title | Frequency Dependence of AC Resistivity and Dielectric Behavior of Lithium-Manganese Soft Ferrites |
| title_full | Frequency Dependence of AC Resistivity and Dielectric Behavior of Lithium-Manganese Soft Ferrites |
| title_fullStr | Frequency Dependence of AC Resistivity and Dielectric Behavior of Lithium-Manganese Soft Ferrites |
| title_full_unstemmed | Frequency Dependence of AC Resistivity and Dielectric Behavior of Lithium-Manganese Soft Ferrites |
| title_short | Frequency Dependence of AC Resistivity and Dielectric Behavior of Lithium-Manganese Soft Ferrites |
| title_sort | frequency dependence of ac resistivity and dielectric behavior of lithium manganese soft ferrites |
| topic | Mn-Li ferrites, Dielectric properties,AC resistivity. |
| url | https://ijp.uobaghdad.edu.iq/index.php/physics/article/view/809 |
| work_keys_str_mv | AT muthafarfalhilli frequencydependenceofacresistivityanddielectricbehavioroflithiummanganesesoftferrites |