Zobrazeno 1 - 10
of 962
pro vyhledávání: '"Microscopic model"'
Publikováno v:
Materials, Vol 17, Iss 19, p 4785 (2024)
With the help of a microscopic model and Green’s function technique, we studied the multiferroic and phonon properties of the recently reported new multiferroic Pr2FeAlO6 (PFAO) compound, which belongs to the double perovskite A2BB’O6 family. The
Externí odkaz:
https://doaj.org/article/c6621ba7b30e46d2bd471de7e2ff1d7f
Publikováno v:
Materials, Vol 17, Iss 18, p 4476 (2024)
In a first theoretical investigation of the multiferroic properties of Pb5Fe3F19 (PFF) and Pb5Cr3F19 (PCF), we analyze their magnetic, ferroelectric, and dielectric characteristics as functions of temperature, magnetic field, and ion doping concentra
Externí odkaz:
https://doaj.org/article/c1a7ff62ea9d4dd4bc6519e09affec4c
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:
Materials, Vol 17, Iss 17, p 4298 (2024)
Using a microscopic model and the Green’s function theory, the size and co-doping effects on the multiferroic and optical (band gap) properties of BiFeO3 (BFO) nanoparticles are investigated. The magnetization increases, whereas the band gap energy
Externí odkaz:
https://doaj.org/article/1e9cd61ef69f47fb8c87c808fd621d1f
Theoretical Study of the Phonon Energy and Specific Heat of Ion-Doped LiCsSO4—Bulk and Nanoparticles
Publikováno v:
Materials, Vol 17, Iss 12, p 2845 (2024)
Using a microscopic model, the temperature dependence of two phonon modes, ω0 = 32 cm−1 and 72 cm−1, and their damping of the ferroelastic LiCsSO4 compound, are calculated within Green’s function technique. It is observed that the first mode i
Externí odkaz:
https://doaj.org/article/882e18a70b394d11b1e1b979a236c66b
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:
Materials, Vol 17, Iss 9, p 1945 (2024)
Using a microscopic model and Green’s function theory, we calculated the magnetization and band-gap energy in ion-doped LiMPO4 (LMPO), where M = Fe, Ni, Co, Mn. Ion doping, such as with Nb, Ti, or Al ions at the Li site, induces weak ferromagnetism
Externí odkaz:
https://doaj.org/article/5b39980f502848448a1bdd8d2fd05413
Publikováno v:
Materials, Vol 17, Iss 9, p 1995 (2024)
The film thickness, temperature, substrate and doping dependence of the phonon energy ω and damping γ, as well as the electrical conductivity, of pure and Sr-doped LaMnO3 thin films near the phase transition temperature TN are investigated using a
Externí odkaz:
https://doaj.org/article/3241750c921b4903913942970de4d065
Publikováno v:
Materials, Vol 17, Iss 7, p 1544 (2024)
Electric, dielectric, and optical (band gap) properties of pure multiferroic as well as La- and Ni-doped SrFe12O19 (SFO) (at different sites) are investigated using a microscopic model and Green’s function technique. The concentration dependence of
Externí odkaz:
https://doaj.org/article/787739ff591e49b68b965397304d593d
Publikováno v:
Magnetochemistry, Vol 10, Iss 3, p 19 (2024)
The magnetization, polarization, and band-gap energy in pure and ion-doped KNbO3 (KNO) bulk and nanoparticles (NPs) are investigated theoretically using a microscopic model and Green’s function theory. It is shown that KNO NPs are multiferroic. The
Externí odkaz:
https://doaj.org/article/eb43aac28d6f48f5a3575935e3a1d5d6