Электронный каталог

Статья

Kobayashi, S.
Magnetization Process of Cubic Fe&sub(3)O&sub(4) Submicron Particles: First-Order Reversal Curves and Neutron Diffraction Studies / S.Kobayashi, I.Bobrikov, [et al.] // Journal of Magnetism and Magnetic Materials [Electronic resource]. – 2024. – Vol. 589. – P. 171509. – URL: https://doi.org/10.1016/j.jmmm.2023.171509. – Bibliogr.: 75.

We have studied magnetization process of 260 nm sized cubic Fe&sub(3)O&sub(4) particles below and above the Verwey transition temperature 𝑇&sub(v) ∼ 110 K, by measurements of magnetic first-order reversal curves (FORCs) and high-resolution power neutron diffraction. The FORC diagram exhibits two distinct FORC distribution peaks below 𝑇&sub(v), which shift towards the origin, merge into a single peak on heating, whereas only a single FORC peak appears above 𝑇&sub(v) Neutron diffraction measurements under magnetic fields revealed a minimum of the magnetic intensity at a magnetic field of ∼−300 Oe, being close to the reversal field where the FORC peak is located. These results were interpreted as due to a reorientation and reversal of a spin vortex core, which accompany a large magnetic irreversibility.



Спец.(статьи,препринты) = С 342 г1 - Замедление и диффузия нейтронов. Дифракция
ОИЯИ = ОИЯИ (JINR)2024
Бюллетени = 17/024