Frequency Variation of the AC Order Parameter Susceptibility of the Metamagnetic Ising Model
The extensive investigation of the absorptive and reactive parts of the AC order parameter susceptibility spectra of iron group dihalides, which is obtained on the basis of Onsager theory of irreversible processes, revealed the fact that the diagonal phenomenological rate coefficients γs and γm have...
Saved in:
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2018-01-01
|
| Series: | Advances in Condensed Matter Physics |
| Online Access: | http://dx.doi.org/10.1155/2018/8479684 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832554737566744576 |
|---|---|
| author | Gul Gulpinar |
| author_facet | Gul Gulpinar |
| author_sort | Gul Gulpinar |
| collection | DOAJ |
| description | The extensive investigation of the absorptive and reactive parts of the AC order parameter susceptibility spectra of iron group dihalides, which is obtained on the basis of Onsager theory of irreversible processes, revealed the fact that the diagonal phenomenological rate coefficients γs and γm have an important impact on the nature of the order parameter relaxation process. The number of the relaxation peaks appearing in the double logarithmic plots of χs′′ versus field frequency ω and the number of plateau regions in χs′ spectrum depends on the values of γs and γm. Only for γs≫γm does the relaxation evolve from a simple Debye exponential at high temperatures to a two-step process at lower temperatures in which there exist two long relaxation times characterizing the relaxation of staggered magnetization. In parallel with these characteristics of the order parameter relaxation, Cole-Cole plots (χs′′-χs′) are shown to consist of two arcs in the metamagnetic phase and of a semicircle in the paramagnetic phase. |
| format | Article |
| id | doaj-art-dc71b53858714918a2ad40d108be1097 |
| institution | Kabale University |
| issn | 1687-8108 1687-8124 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Condensed Matter Physics |
| spelling | doaj-art-dc71b53858714918a2ad40d108be10972025-02-03T05:50:46ZengWileyAdvances in Condensed Matter Physics1687-81081687-81242018-01-01201810.1155/2018/84796848479684Frequency Variation of the AC Order Parameter Susceptibility of the Metamagnetic Ising ModelGul Gulpinar0Department of Physics, Dokuz Eylül University, 35160 Izmir, TurkeyThe extensive investigation of the absorptive and reactive parts of the AC order parameter susceptibility spectra of iron group dihalides, which is obtained on the basis of Onsager theory of irreversible processes, revealed the fact that the diagonal phenomenological rate coefficients γs and γm have an important impact on the nature of the order parameter relaxation process. The number of the relaxation peaks appearing in the double logarithmic plots of χs′′ versus field frequency ω and the number of plateau regions in χs′ spectrum depends on the values of γs and γm. Only for γs≫γm does the relaxation evolve from a simple Debye exponential at high temperatures to a two-step process at lower temperatures in which there exist two long relaxation times characterizing the relaxation of staggered magnetization. In parallel with these characteristics of the order parameter relaxation, Cole-Cole plots (χs′′-χs′) are shown to consist of two arcs in the metamagnetic phase and of a semicircle in the paramagnetic phase.http://dx.doi.org/10.1155/2018/8479684 |
| spellingShingle | Gul Gulpinar Frequency Variation of the AC Order Parameter Susceptibility of the Metamagnetic Ising Model Advances in Condensed Matter Physics |
| title | Frequency Variation of the AC Order Parameter Susceptibility of the Metamagnetic Ising Model |
| title_full | Frequency Variation of the AC Order Parameter Susceptibility of the Metamagnetic Ising Model |
| title_fullStr | Frequency Variation of the AC Order Parameter Susceptibility of the Metamagnetic Ising Model |
| title_full_unstemmed | Frequency Variation of the AC Order Parameter Susceptibility of the Metamagnetic Ising Model |
| title_short | Frequency Variation of the AC Order Parameter Susceptibility of the Metamagnetic Ising Model |
| title_sort | frequency variation of the ac order parameter susceptibility of the metamagnetic ising model |
| url | http://dx.doi.org/10.1155/2018/8479684 |
| work_keys_str_mv | AT gulgulpinar frequencyvariationoftheacorderparametersusceptibilityofthemetamagneticisingmodel |