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.
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页数：10
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