|
|
|
Phase diagrams of the spin-2 Ising model in the presence of a quenched diluted crystal field distribution |
| Ali Yigita, Erhan Albayrakb |
a Cankiri Karatekin University, Department of Physics, Cankiri 18100, Turkey;
b Erciyes University, Department of Physics, Kayseri 38039, Turkey |
|
|
|
|
Abstract We have investigated the random crystal field effects on the phase diagrams of the spin-2 Blume-Capel model for the honeycomb lattice using the effective-field theory with correlations. To do so, the thermal variations of magnetization are studied via calculating the phase diagrams of the model. We have found that the model displays both second-order and first-order phase transitions in addition to the tricritical and isolated points. Reentrant behavior is also observed for some appropriate values of certain system parameters. Besides the usual ground-state phases of spin-2 model including ±2, ±1, and 0, we have also observed the phases ±3/2 and ±1/2 which are unusual for spin-2 case.
|
Received: 25 April 2012
Accepted manuscript online:
|
|
PACS:
|
05.40.-a
|
(Fluctuation phenomena, random processes, noise, and Brownian motion)
|
| |
05.50.+q
|
(Lattice theory and statistics)
|
| |
64.60.De
|
(Statistical mechanics of model systems (Ising model, Potts model, field-theory models, Monte Carlo techniques, etc.))
|
|
Corresponding Authors:
Ali Yigit
E-mail: ayigit80@karatekin.edu.tr
|
Cite this article:
Ali Yigit, Erhan Albayrak Phase diagrams of the spin-2 Ising model in the presence of a quenched diluted crystal field distribution 2012 Chin. Phys. B 21 110503
|
| [1] |
Kaneyoshi T, Tucker J W and Jascur M 1992 Physica A 186 495
|
| [2] |
Plascak J A, Moreira J G and saBarreto F C 1993 Phys. Lett. A 173 360
|
| [3] |
Jiang W, Guo A B, Li X, Wang X K and Bai B D 2006 Commun. Theor. Phys. 46 1105
|
| [4] |
Liang Y Q, Wei G Z, Zhang Q and Song G L 2004 Chin. Phys. Lett. 21 378
|
| [5] |
Jiang W, Wei G Z and Xin Z H 2000 J. Magn. Magn. Mater. 220 96
|
| [6] |
Zhao J, Xu X G and Wei G Z 2009 Commun. Theor. Phys. 52 163
|
| [7] |
Zhao J, Wei G Z and Xu X G 2006 Commun. Theor. Phys. 45 749
|
| [8] |
Ertas M, Deviren B and Keskin M 2012 J. Magn. Magn. Mater. 324 704
|
| [9] |
Keskin M, Canko O and Ertas M 2007 J. Exp. Theor. Phys. 105 1190
|
| [10] |
Bahmad L, Benyoussef A and El Kenz A 2007 Phys. Rev. B 76 094412
|
| [11] |
Yüksel Y, Akinci U and Polat H 2012 Physica A 391 2819
|
| [12] |
Gulpinar G, Vatansever E and Agartioglu M 2012 Physica A (in press)
|
| [13] |
Honmura R and Kaneyoshi T 1979 J. Phys. C 12 3979
|
| [14] |
Kaneyoshi T, Fittipaldi I P, Honmura R and Manabe T 1981 Phys. Rev. B 24 481
|
| [15] |
Tamura I and Kaneyoshi T 1981 Prog. Theor. Phys. 66 1892
|
| [16] |
Zernike F 1940 Physica 1 565
|
| [17] |
Ertas M, Keskin M and Deviren B 2012 J. Magn. Magn. Mater. 324 1503
|
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
Altmetric
|
|
blogs
Facebook pages
Wikipedia page
Google+ users
|
Online attention
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
View more on Altmetrics
|
|
|
