Studies on structural and thermo-chemical behavior of MFe12O19(s) (M=Sr, Ba and Pb) prepared by citrate–nitrate gel combustion method

Hopkinson peak and superparamagnetic effects in BaFe12-xGaxO19nanoparticles

“…These materials have been investigated due to their importance for both fundamental research and technological applications in permanent magnets, high-density magnetic recording, magneto-optics and microwave devices [1][2][3][4][5][6]. Different techniques have been used to prepare and characterize hexaferrite particles [7][8][9][10][11][12][13]. The magnetic properties of these materials have been tuned by substitution of Fe by different magnetic and nonmagnetic cations, and intensively investigated by different techniques [14][15][16][17][18][19][20].…”

Multiferroic PbFe12O19 ceramics

“…M-type hexaferrites denoted as PbFe 12 O 19 has attracted a lot of attention because of their excellent magnetic properties and potential application in various fields [16,17]. Their properties of large magneto crystalline anisotropy, high saturation magnetization and coercivity result in its usage as plastic magnets, recording media, permanent magnets, and components in microwave and high frequency devices [18].…”

Spin-phonon coupling in BaFe12O19 M-type hexaferrite

“…Thus, this anomaly can be associated with two phenomena: a phonon renormalization due to a spin-phonon coupling; or due to a magnetostrinction effect. However, any anomaly was observed in the lattice parameters of BaM when it undergoes this magnetic transition [22], which eliminates the possibility magnetostrinction effect possibility. Thus, this anomaly is due to a spin-phonon coupling at the magnetic transition in BaM.…”