Электронный каталог

Статья

Turchenko, V.
The Influence of Ambient High Pressure to Structural Features of Barium Hexaferrite / V.Turchenko, Z.Surowiec, A.Rutkauskas, [et al.]. – Text : electronic // Journal of Physics: Condensed Matter. – 2026. – Vol. 38, No. 1. – P. 015705. – URL: https://doi.org/10.1088/1361-648X/ae29a2.

A comprehensive analysis of the magnetic properties, crystal structure and magnetic configuration of the ceramic BaFe&sub(12)O&sub(19), prepared using the sol-gel method, was conducted over the temperature range from 4 K to room temperature. The impact of ambient pressure on the crystal and magnetic structures of ceramic BaFe&sub(12)O&sub(19) has enabled the determination of bulk modulus B&sub(0) ∼ 123.8 GPa and its first-order derivative B&sub(p)′ ∼ 4.1, as well as the coefficients of linear compressibility of the lattice parameters for the hexagonal unit cell. The results of neutron diffraction collected at pressures ranging from 0.1 GPa to 5 GPa were analyzed in the framework of both centrosymmetric SG P6&sub(3)/mmc (No. 194) and non-centrosymmetric SG P6&sub(3)mc (No. 186). The decrease in the total magnetic moment with an increase in ambient pressure was associated with a weakening of the exchange interaction in the ferrimagnetic structure, owing to a reduction in the bond angles (∠ Fe–O–Fe) of various iron sublattices.



Спец.(статьи,препринты) = С 342 г1 - Замедление и диффузия нейтронов. Дифракция
ОИЯИ = ОИЯИ (JINR)2026
Бюллетени = 21/026