TY - JOUR

T1 - Pseudomorphism and size stabilization of hematite particles in the organic phase synthesis

AU - Sankova, N.

AU - Parkhomchuk, E.

PY - 2020/2

Y1 - 2020/2

N2 - In this paper, we suggest the synthetic routes to prepare octahedrally crystallized hematite particles. One of these routes allows stabilizing pseudomorphic nanoparticles. Calcination of iron (III) oleate at 300 ​°C in air gives triangular shaped magnetite particles. At higher temperatures (400–500 ​°C), the octahedrons, about 1 μm in size, with predominant hematite phase are obtained. Calcination of the same precursor in the presence of polymeric beads results in a decrease of particle size up to 20 ​nm while preserving the magnetic phase admixture. To achieve effective stabilization, swelling of polystyrene beads during the iron (III) oleate impregnation is required.

AB - In this paper, we suggest the synthetic routes to prepare octahedrally crystallized hematite particles. One of these routes allows stabilizing pseudomorphic nanoparticles. Calcination of iron (III) oleate at 300 ​°C in air gives triangular shaped magnetite particles. At higher temperatures (400–500 ​°C), the octahedrons, about 1 μm in size, with predominant hematite phase are obtained. Calcination of the same precursor in the presence of polymeric beads results in a decrease of particle size up to 20 ​nm while preserving the magnetic phase admixture. To achieve effective stabilization, swelling of polystyrene beads during the iron (III) oleate impregnation is required.

KW - Hematite

KW - Pseudomorphism

KW - Size stabilization

KW - NANOPARTICLES

KW - ALPHA-FE2O3

KW - GROWTH

KW - MAGNETITE

KW - CRYSTAL

UR - http://www.scopus.com/inward/record.url?scp=85076519316&partnerID=8YFLogxK

U2 - 10.1016/j.jssc.2019.121130

DO - 10.1016/j.jssc.2019.121130

M3 - Article

AN - SCOPUS:85076519316

VL - 282

JO - Journal of Solid State Chemistry

JF - Journal of Solid State Chemistry

SN - 0022-4596

M1 - 121130

ER -