Renormalization-group magnetization of a ferrimagnetic Ising system

Beatriz Boechat, R.A. Filgueiras, Claudette Cordeiro and N.S. Branco

Physica A: Statistical Mechanics and its Applications, 2002, vol. 304, issue 3, 429-442

Abstract: We employ a real-space renormalization-group (RSRG) approach to study a mixed-spin (spin-12 and spin-1) antiferromagnetic Ising model on the square lattice. The model incorporates next-nearest-neighbor interactions which are relevant to describe ferrimagnetism. We present an RSRG calculation of the spontaneous magnetization and compensation temperatures of the mixed-spin model. The influence of crystal-field and next-nearest-neighbor interactions on compensation temperatures is studied; the important physical ingredient that leads to the presence of these temperatures is the next-nearest-neighbor coupling between spins 12.

Keywords: Ferrimagnetism; Compensation temperatures; Renormalization group (search for similar items in EconPapers)
Date: 2002
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:304:y:2002:i:3:p:429-442

DOI: 10.1016/S0378-4371(01)00560-X

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