Zobrazeno 1 - 10
of 72
pro vyhledávání: '"Iliana N. Apostolova"'
Publikováno v:
Nanomaterials, Vol 14, Iss 18, p 1473 (2024)
Using a microscopic model and Green’s function theory, we have investigated the co-doping effect on ferroelectric KNbO3 nanoparticles. Let us emphasize that while the doping with transition metal ions at the Nb site leads an increase in the ferroma
Externí odkaz:
https://doaj.org/article/211b7f44b5ca4f4eb4e9ba7be5429dc6
Publikováno v:
Applied Sciences, Vol 14, Iss 11, p 4859 (2024)
Using a microscopic model and Green’s function theory, we investigated the magnetization, specific heat, and polarization properties of CaBaCo4O7 (CBCO), scrutinizing their variations with temperature, magnetic field strength, and doping effects. O
Externí odkaz:
https://doaj.org/article/dd867bc5acae4bb097468de4f754c2fb
Publikováno v:
Applied Sciences, Vol 14, Iss 5, p 1686 (2024)
Using the microscopic s-f model and Green’s function theory, we study the temperature dependence of the band gap energy Eg and the phonon energy ω and damping γ of ferro- and antiferromagnetic semiconductors, i.e., with different signs of the s-f
Externí odkaz:
https://doaj.org/article/03b118740aad48e3aa332ee932ec9ea6
Publikováno v:
Molecules, Vol 29, Iss 5, p 1011 (2024)
Using a microscopic model and Green’s function theory, we have calculated the band gap energy and the polarization of LiNbO3, KNbO3, AgNbO3, and NaNbO3. The effects by substitution of different ions at A or/and B sites for doping concentration x =
Externí odkaz:
https://doaj.org/article/b047c9ab6f74463a9c804ae26099a34c
Publikováno v:
physica status solidi (b).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c316d6e729fe803e48ba4ff4992203b8
https://doi.org/10.1002/pssb.202300077
https://doi.org/10.1002/pssb.202300077
Publikováno v:
Phase Transitions. 94:527-535
The multiferroic properties of NaCu2O2 (NCO) around the phase transition temperature TN are studied theoretically. The total polarization P is zero without magnetic field h due to the antiferroelectric state induced by the alternate stacking of CuO2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::91ef267f2669a66cab70f8743ba2d739
https://doi.org/10.1080/01411594.2021.1945059
https://doi.org/10.1080/01411594.2021.1945059
Publikováno v:
Advances in Materials Physics and Chemistry. 10:27-38
The dependence of the polarization P in Hf1-xZrxO2 nanoparticles on electric field, dopant concentration x, size and temperature are studied using the transverse Ising model and the Green’s function method. Pure ZrO2 shows at high electric fields a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7ae7433447d7690f54347d9124216ece
https://doi.org/10.4236/ampc.2020.102003
https://doi.org/10.4236/ampc.2020.102003
Herein, doped yttrium garnet (YIG) nanoparticles (NPs) Y3[Fe2-yMy]a(Fe3-zMz)d O12 (M = Al, Ga, Sc are nonmagnetic ions) are studied, appropriate for self-controlled magnetic hyperthermia (SCMH) for in vivo and in vitro applications. A microscopic mod
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d264d14c57fcce3c0ce0274580266c89
Publikováno v:
Solid State Communications. 292:11-16
On the basis of a microscopic model and using the Green's function technique we have studied the induced ferroelectric polarization P[110] along the [110] direction in the triangular CuFeO2. It is shown that P[110] is induced by an external magnetic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c188ff20db398212a27e940ffda9fb93
https://doi.org/10.1016/j.ssc.2019.01.014
https://doi.org/10.1016/j.ssc.2019.01.014
Publikováno v:
physica status solidi (b). 259:2200171
The multiferroic properties of BiCrO3 (BCO) bulk and thin films are investigated for the first time using a microscopic model. The influence of ion doping on the multiferroic properties of BCO is also studied because the doping process changes the ph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::03002365e94394a6d67ee6d7dbab393b
https://doi.org/10.1002/pssb.202200171
https://doi.org/10.1002/pssb.202200171