2003/04/01 by Yu. G. Semenov, Yuri Semenov, V. A. Stephanovich
Materials Science · Physics and Astronomy · #Magnetic and transport properties of perovskites and related materials #Rare-earth and actinide compounds #ZnO doping and properties #cond-mat.dis-nn #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevb.67.195203
Accepted for publication in Phys. Rev. B
arxiv created 2003/04/01 · openalex publication_date 2003/05/09 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We predict a different mechanism of enhancement of ferromagnetic phase transition temperature Tc in uniaxially stressed diluted magnetic semiconductors (DMS) of p type. Our prediction is based on comparative studies of both Heisenberg (inherent to undistorted DMS with cubic lattice) and Ising (which can be applied to strongly enough stressed DMS) models in a random-field approximation permitting us to take into account the spatial inhomogeneity of spin-spin interaction. Our calculations of phase diagrams show that the area of parameters for the existence of DMS ferromagnetism in the Ising model is much larger than that in the Heisenberg model.