M. Pernet

TL;DR: In this article, the room temperature structure of BaFe12O19 hexagonal ferrite has been refined from X-ray single crystal data, and three different models are considered for the structural and dynamic characteristics of the bipyramidal Fe ions: (1) a nondisordered configuration, (2) a static disorder between two adjacent pseudotetrahedral sites, and (3) a dynamical disorder between these sites.

TL;DR: The structural and magnetic properties of BaFe12−2xCoxTixO19 (0≤x≤1.0) M•type barium ferrite have been investigated by means of neutron powder diffraction and high-field magnetization measurements.

TL;DR: In this article, the magnetic susceptibility measurements of the magnetoplumbite-like compound SrCr 8 Ga 4 O 19 showed that no magnetic phase transition occurs up to T = 4.2K in spite of very high antiferromagnetic interactions making apparent a very high degree of magnetic frustration (O/Tg 117).

TL;DR: The room temperature structure of SrFe/sub 12/O/sub 19/ hexagonal ferrite has been refined from X-ray single-crystal data in this article, where structural isomorphism of the title compound with the hexagonal Ferrite BaFe/s 12 O/s 19/ has been demonstrated, corroborating that the bipyramidal Fe ions have a fast diffusional motion within a quasiharmonic double-well potential as in BaFe

TL;DR: In this article, the modified coprecipitation method has been shown to be suitable for preparing BaFe2y−2χCoχTiχO19 powder with narrow particle size distribution (50-80 nm).