Ground-State Phase Diagram of a Model FCC Magnet with Modified RKKY Interaction |
| K. Szałowski and T. Balcerzak
Department of Solid State Physics, University of Łódź, Pomorska 149/153, 90-236 Łódź, Poland |
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| Received: 9 07 2007; |
| The ground-state phase diagram is studied for a diluted model magnet with FCC structure and modified Ruderman-Kittel-Kasuya-Yosida interaction. The modification consists in taking into account the exponential damping for the long-range interaction as well as the nearest-neighbors antiferromagnetic superexchange couplings. The existence of paramagnetic, ordered ferromagnetic and three distinct antiferromagnetic phases is shown. The stability areas of the phases upon the free-carriers concentration are investigated. |
| DOI: 10.12693/APhysPolA.113.421 PACS numbers: 75.50.Pp, 75.10.-b, 75.30.Hx, 75.30.Kz |