Magnetization process of cubic Fe3O4 submicron particles: First-order reversal curves and neutron diffraction studies

被引：3

作者：

Kobayashi, Satoru ^{[1
]}

Nomura, Eiji ^{[1
]}

Noda, Chiaki ^{[1
]}

Manjanna, Jayappa ^{[2
]}

Jargalan, Narmandakh ^{[3
]}

Uyanga, Enkhnaran ^{[3
]}

Bobrikov, Ivan ^{[4
,5
]}

Kiseleva, Tatiana ^{[6
]}

Rusakov, Vyacheslav ^{[6
]}

Sangaa, Deleg ^{[3
]}

机构：

[1] Iwate Univ, Fac Sci & Engn, Ueda 4-3-5, Morioka 0208551, Japan

[2] Rani Channamma Univ, Dept Chem, Belagavi 591156, India

[3] Mongolian Acad Sci, Inst Phys & Technol, Ulaanbaatar 13330, Mongolia

[4] Joint Inst Nucl Res, Frank Lab Neutron Phys, Dubna 141980, Russia

[5] Basque Res & Technol Alliance, Ctr Cooperat Res Alternat Energies, Vitoria 01510, Spain

[6] Mscow MV Lomonosov State Univ, Fac Phys, Moscow 119991, Russia

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2024年 / 589卷

关键词：

Magnetic hysteresis; Magnetite; Nanoparticle; Neutron diffraction; PSEUDO-SINGLE-DOMAIN; VERWEY TRANSITION; LOW-TEMPERATURE; MOSSBAUER-SPECTRA; SIZE DEPENDENCE; HYSTERESIS; MAGNETITE; NANOPARTICLES; MULTIDOMAIN; STATE;

D O I：

10.1016/j.jmmm.2023.171509

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have studied magnetization process of 260 nm sized cubic Fe3O4 particles below and above the Verwey transition temperature Tv similar to 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 Tv, which shift towards the origin, merge into a single peak on heating, whereas only a single FORC peak appears above Tv. Neutron diffraction measurements under magnetic fields revealed a minimum of the magnetic intensity at a magnetic field of similar to-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.

引用

页数：10

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