Wiatrowski, G. and Bayreuther, Guenther and Bensch, F. (2001) A simple method of complex ferrimagnetic properties description of AB(1)AB(2)-superlattice structures with a strong perpendicular anisotropy contribution (Blume-Capel model). PHYSICA A, 293 (3-4). pp. 478-484. ISSN 0378-4371
Full text not available from this repository. (Request a copy)Abstract
We have studied the ferrimagnetic spin-1 AB(1)AB(2) superlattice in the presence of perpendicular single-ion anisotropy (Blume-Capel model) to have a direct evidence of the existence of multicompensation and tricritical effects. We present the theory based on the use of the exact solution for spin-1 Ising linear chain in external magnetic field. The free energy is calculated from the Bogolyubov's variational principle in frame of the transfer matrix method. Then, we obtain the description of the second as well as first-order phase transition, together with the layered and total magnetization curves. Our results (phase diagrams) indicate the possible existence of 1-3-compensation point effects for particular values of magnetic structure parameters. Mainly, the contribution of the perpendicular single-ion anisotropy is verified. (C) 2001 Elsevier Science B.V. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ONE ISING-MODEL; LINEAR-CHAIN APPROXIMATION; SYSTEM; SPIN-1/2; POINT; perpendicular anisotropy; superlattice structure; ferrimagnetism; compensation effects; Blume-Capel model |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Günther Bayreuther |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 02 Feb 2022 12:04 |
| Last Modified: | 02 Feb 2022 12:04 |
| URI: | https://pred.uni-regensburg.de/id/eprint/41497 |
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