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Theoretical study of multiferroic thin films based on a microscopic model.
J Phys Condens Matter. 2009 Jun 3;21(22):225007. doi: 10.1088/0953-8984/21/22/225007. Epub 2009 May 11.
J Phys Condens Matter. 2009.
PMID: 21715771
The influence of the surface, film thickness, temperature and ion doping effects on the magnetic and electric properties in multiferroic thin films is studied by a combination of modified Heisenberg and transverse Ising models using a Green's function technique. It is demonstrate …
The influence of the surface, film thickness, temperature and ion doping effects on the magnetic and electric properties in multiferroic thi …
Magnetic, Optical and Phonon Properties of Ion-Doped MgO Nanoparticles. Application for Magnetic Hyperthermia.
Apostolova I, Apostolov A, Wesselinowa J.
Apostolova I, et al.
Materials (Basel). 2023 Mar 15;16(6):2353. doi: 10.3390/ma16062353.
Materials (Basel). 2023.
PMID: 36984231
Free PMC article.
The influence of size and doping effects on the magnetization M, phonon omega and band gap energy Eg of MgO nanoparticles is studied using a microscopic model. The room-temperature ferromagnetism is due to surface or/and doping effects in MgO nanoparticles (NPs). The influ …
The influence of size and doping effects on the magnetization M, phonon omega and band gap energy Eg of MgO nanoparticles is studied …
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Size, anisotropy and doping effects on the coercive field of ferromagnetic nanoparticles.
Wesselinowa JM, Apostolova I.
Wesselinowa JM, et al.
J Phys Condens Matter. 2007 Oct 10;19(40):406235. doi: 10.1088/0953-8984/19/40/406235. Epub 2007 Sep 21.
J Phys Condens Matter. 2007.
PMID: 22049133
It is demonstrated that the coercive field H(c) is very sensitive to the surface single-ion anisotropy, and to the exchange interaction constant on the surface J(s) and in the defect shells J(d). With respect to the strong surface single-site anisotropy D(s), we obs …
It is demonstrated that the coercive field H(c) is very sensitive to the surface single-ion anisotropy, and to the exchange interaction cons …
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Theoretical Study of the Magnetic and Optical Properties of Ion-Doped LiMPO(4) (M = Fe, Ni, Co, Mn).
Apostolova IN, Apostolov AT, Wesselinowa JM.
Apostolova IN, et al.
Materials (Basel). 2024 Apr 23;17(9):1945. doi: 10.3390/ma17091945.
Materials (Basel). 2024.
PMID: 38730754
Free PMC article.
Using a microscopic model and Green's function theory, we calculated the magnetization and band-gap energy in ion-doped LiMPO(4) (LMPO), where M = Fe, Ni, Co, Mn. Ion doping, such as with Nb, Ti, or Al ions at the Li site, induces weak ferromagnetism in LiFePO(4). ...
Using a microscopic model and Green's function theory, we calculated the magnetization and band-gap energy in ion-doped LiMPO(4) (LMPO), whe …
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