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2006 | 110 | 1 | 25-39
Article title

Magnetization Processes in Dilute Metamagnets with Ferro- and Antiferromagnetic Exchange Interactions

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EN
Abstracts
EN
Using the Green function method there has been presented the mathematical description of dilute two sub-lattice metamagnets with ferro- and antiferromagnetic exchange interactions. The Green function averaging procedure is based on the Cumulant Expansion Technique and includes any localized Green function irrespectively of the decoupling algorithm making the chain system of equations self-consistent. The derived form of the averaged Green function is the base for the analysis of magnetization processes and phase transitions occurring in the system under the influence of external magnetic field. It has been found in particular that the tricritical point and the second-order phase transition vanish when concentrations of magnetic atoms coupled with different sub-lattice points become different.
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Contributors
author
  • Maritime University, Department of Physics, Wały Chrobrego 1/2, 70-500 Szczecin, Poland
author
  • Maritime University, Department of Physics, Wały Chrobrego 1/2, 70-500 Szczecin, Poland
References
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv110n103kz
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