2021   03   en   p.28-32 V.A. Tanriverdiyev, V.S. Tagiyev,
Dynamics of S = 1/2 and S = 1 ising spin system in restangular nanowire		  pdf 

ABSTRACT

The dynamic behaviors are studied, within a mean-field approach, in the kinetic mixed spin (1/2, 1) Ising nanowire system with core-shell structure under the presence of a time varying (cosinusoidal) magnetic field by using the Glauber-type stochastic dynamics. The time variations of the average shell and core magnetizations are investigated to obtain the phases in the system. In order to determine the behaviors of time variotions of the average magnetization, the stationary solutions of the dynamic effective filed coupled equations have been studied for various values of interaction parameters, temperature and external magnetic field. It has been determined that the system contain paramagnetic (p), ferrimagnetic (i), nonmagnetic (nm) phases, and also coexistence regions, which strongly depend on interaction parameters.

Keywords: Nanowire; Ising model; Mixed spin system; Mean-field approach; Glauber-type stochasticdynamic.
PACS: 75.70. AK.

DOI:-

Received: 17.07.2021

AUTHORS & AFFILIATIONS

Institute of Physics of the National Academy of Sciences of Azerbaijan, H.Javid ave.131, Baku AZ 1143
E-mail: vahid_tanriverdi @yahoo.com 		REFERENCIES

[1]   W.T. Coffey, D.S.F. Crothers, J.L. Dormann, Y.P.Kalmykov, E.C. Kennedey, W. Wernsdorfer. Phys. Rev. Lett. 80, 5655. 37, 1998.
[2]   S. Momose, H. Kodama, T. Uzumaki, A. Tanaka. Appl. Phys. Lett. 85, 1748, 2004.
[3]   M. Vasilakaki, K.N. Trohidou. Phys.Rev. B 79, 144402, 2009.
[4]   A.F. Bakuzis, P.C. Morais. J. Magn. Magn. Mater. 285, 145-154, 2005.
[5]   T. Kaneyoshi. J. Magn. Magn. Mater., 321, 3430-3435, 2009.
[6]   M. Vasilakaki, K.N. Trohidou. Phys.Rev. B 79, 144402, 2009.
[7]   T. Kaneyoshi. Phys.Status Solidi., B 248, 250-258, 38, 2011.
[8]   O. Canko, A. Erdinç, F. Taskin, A.F. Yildirim. J.Magn. Magn. Mater. 324, 508-513, 2012.
[9]   U. Akıncı. J. Magn. Magn. Mater., 324, 3951-3960, 2012.
[10]  V.S. Leite, B.C.S. Grandi, W. Figueiredo. Phys. Rev. B 74, 094408, 2006.
[11]  T. Kaneyoshi. Physica B 414, 72, 2013.
[12]  K.R. Heim, G.G. Hembree, K.E. Schmidt, M.R. Scheinfein. Appl. Phys. Lett. 67, 2878, 1995.
[13]  L.G.C. Rego, W. Figueiredo. Phys. Rev. B 64, 144424, 2001.
[14]  H. Magoussi, A. Zaim, M. Kerouad. Solid State Commun. 200, 32-41, 2014.
[15]  E. Albayrak. J. Magn. Magn. Mater., 401, 532-538, 2016.
[16]  M. Keskin, M. Ertas, O. Canko. Phys. Scr., 79, 025501, 2009.
[17]  B. Deviren, M. Keskin, O. Canko. J. Magn. Magn. Mater., 321, 458-466, 2009.
[18]  B. Deviren, M. Keskin. J. Stat. Phys., 140, 934-947, 2010.