Keywords
spin waves parameter
Bloch's law
How to Cite
Abstract
The spin waves parameter B describing low temperature behaviour of magnetisation has been calculated for the array of magnetic dots. The Heisenberg model has been used with the exchange and shape anisotropies taken into account. The dependence of B on the dot size and interaction parameters has been found. The results obtained are in agreement with experimental findings.
References
Prinz G., Science 282 (1998) 1660.
Landeros P., Escrig D., Altbir D., Bahiana M.and d’Albuquerque e Castro J.,. J. Appl. Phys. 100 (2006) 044311.
Beleggia M., Lau J, Schofield M., Zhu Y., Tandon S. and Degraef M., J. Magn. Magn. Mater. 301 (2006) 131.
Zhu R, Pang Y.T., Feng Y.S., Fu G.H., Li Y., Zhang L.D., Chemical Physics Letters 368, (2003), 696.
Giovannini L., Montoncello F., Nizzoli F., Phys. Rev. B 75, (2007), 024416.
Berger L., Labaye Y., Tamine M., Coey J.M.D., Phys. Rev. B, 77, (2008), 104431.
Cebollada A., García Martín J.M. , Clavero C., Balcells Ll., Estradé S., Arbiol J., Peiró F., Smith C., R. Clarke, Martínez L., Huttel Y., Román E., Telling N.D., van der Laan G., Phys. Rev. B 79, (2009), 014414.
Martin I., Noques J., Liu Kai, Vicente J.L., Schuller I.K., J. Magn. Magn. Mater. 256 (2003) 449.
Ferchmin A.R., Puszkarski H., Acta Physicae Suerficierum IV (2001) 55.
Kipferl W., Dumm M., Kotissek P., Steinbauer F., Bayreuther G., J. Appl. Phys., 95 (2004) 7417.
Ferchmin A.R., Puszkarski H., J. Appl. Phys. 90, (2001), 5335.
Puszkarski H., Krawczyk M., Lèvy J.C., Phys. Stat. Sol. (b) 243, (2006) 65.
Tyablikov S.W., Metody kvantovoi teorii magnetizma, Nauka, Moskva 1965.
Rutheford D.E., Proc. Roy. Soc. (Edinburgh) A 62 (1947) 229.
Korecki J., Przybylski M. Gradmann U., J. Magn. Magn. Mater. 89 (1990) 325.
Wagner K., Weber N., Elmers H.J., Gradmann U., J. Magn. Magn. Mater. 167 (1997) 21.
Lassri M., Omri M., Ouahmane H., Abid M., Ayadi M., Krishnan R., Physica b (2004) 319.
Zhang D., Klabunde K.J., Sorensen C.M., Hadjipanayis G.C., Phys. Rev. B 58 (1998) 14167.
Wesselinowa J.M., J. Phys.: Condens. Matter 18 (2006) 8169.