The existence and origin of field-induced ferrimagnetic order transition of LuFe2O4 single crystal

Yang, Feng; Feng, Qiyuan; Xia, Zhengcai; Lu, Qingyou; Song, Yujie; Huang, Sha; Zhang, Xiaoxing; Jiang, Dequan; Deng, Han; Zeng, Zhi; Niu, Haoyu; Cheng, Chuanfu; Hou, Yubin; Tian, Zhaoming

doi:10.1016/j.jallcom.2020.158426

Cited by 6 publications

(4 citation statements)

References 42 publications

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“…Due to the fact that the mixed valence of Fe ions is demonstrated in Fe 3 C@MXene/HMCFs, one possible origin of the broad peak is associated with charge transfer instead of antiferromagnetic ordering. Those results are reminiscent of the mixed valence compound LuFe 2 O 4 , in which the Fe 2+ and Fe 3+ ions are disordered distribution at high temperature and ordered at low temperature. Complex magnetic properties related to the charge transfer are observed when temperature is decreased.…”

Section: Resultsmentioning

confidence: 88%

N-Doped Hollow Multichannel Carbon Nanofibers Encased in Fe₃C for Lithium-Ion Storage

Cheng,

Lu,

Zhang

et al. 2024

ACS Appl. Nano Mater.

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In advancing lithium-ion batteries to achieve high energy densities, prolonged cycling lifespan, and enhanced charging rates, electrode materials with high specific capacities play a crucial role. In this study, we have developed a porous carbon substrate using coaxial electrostatic spinning to enhance the electrochemical properties of the carbon-based anode. This porous structure exposes numerous active sites for Li + ions and reduces the Li + /e − transport pathway, thereby improving the kinetics of Li + /ion and electron transfer. The symbiotic interaction between N and Fe 3 C nanoparticles facilitates the formation of hollow channels and dual conductive pathways. These Fe 3 C nanoparticles, along with hollow carbon nanofibers, enhance long-term cycling stability at room temperature, promote the formation of stable SEI layers, and improve interfacial compatibility. The Fe 3 C hollow multichannel carbon fibers (Fe 3 C/HMCFs) were subjected to analysis using a magnetic measurement system to investigate the charge transfer phenomenon. The observed charge transfer behavior confirms the conductivity of the magnetic Fe 3 C materials. These Fe 3 C/HMCFs exhibit favorable electrochemical characteristics, including an initial capacity of 1130 mAh g −1 at a current density of 2 A g −1 and a second charge/discharge capacity of 706 mAh g −1 .

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Section: Resultsmentioning

confidence: 88%

N-Doped Hollow Multichannel Carbon Nanofibers Encased in Fe₃C for Lithium-Ion Storage

Cheng,

Lu,

Zhang

et al. 2024

ACS Appl. Nano Mater.

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“…Zhu et al [24] found a significant drop in the resistance of the half-metal Bi under high magnetic fields (higher than 35 T). The interaction between spin and lattice degrees of freedom in ErFeO 3 , [25] LuFe 2 O 4 , [26] MnV 2 O 4 [27] and other multiferroic materials can be regulated effectively by pulsed high magnetic fields. Thus, for nonmagnetic semiconductor materials and their devices, a more adequate study of their transport properties under higher magnetic fields is required.…”

Section: Introductionmentioning

confidence: 99%

Unconventional room-temperature negative magnetoresistance effect in Au/n-Ge:Sb/Au devices

He 何,

Yang 杨,

Niu 牛

et al. 2024

Chinese Phys. B

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Non-magnetic semiconductor materials and their devices have attracted wide attention since they are usually prone to exhibit large positive magnetoresistance (MR) effect in a low static magnetic field environment at room temperature. However, how to obtain a large room-temperature negative MR effect in them remains to be studied. In this paper, by designing an Au/n-Ge:Sb/Au device with metal electrodes located on identical side, we observe an obvious room-temperature negative MR effect in a specific 50 T pulsed high magnetic field direction environment, but not in a static low magnetic field environment. Through the analysis of the experimental measurement of the Hall effect results and bipolar transport theory, we propose that this unconventional negative MR effect is mainly related to the charge accumulation on the surface of the device under the modulation of the stronger Lorentz force provided by the pulsed high magnetic field. This theoretical analytical model is further confirmed by regulating the geometry size of the device. Our work sheds light on the development of novel magnetic sensing, magnetic logic and other devices based on non-magnetic semiconductors operating in pulsed high magnetic field environment.

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“…There is no complete agreement in the literature regarding the multiferroic properties of LuFe 2 O 4 [7][8][9][10] despite the large amount of experimental facts indicating the relationship between charge and magnetic ordering in this connection [3,11,12]. In the introductory part of the work [13], a review of recent studies is presented, which reveals topical problems in the physics of multiferroism in LuFe 2 O 4 compounds. For a brief introduction to the circumstances in this area, we refer the reader to this article.…”

mentioning

confidence: 99%

Negative dynamic dielectric permittivity of a ceramic multiferroic LuFe-=SUB=-2-=/SUB=-O-=SUB=-4-=/SUB=- with oxygen nonstoichiometry under the combined influence of temperature and electric field

Gadjiev

et al. 2022

Physics of the Solid State

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The temperature dependences (100-380 K) of the dielectric constant and conductivity of a ceramic multiferroic LuFe2O4 with oxygen nonstoichiometry, measured at alternating current (1, 10, 100 kHz, 1 MHz) and in a static electric field (0-7.1 V/mm), are presented. The regularity of the sign inversion of the dynamic permittivity caused by the appearance of solid-state inductance in the samples is discussed. Keywords: negative permittivity, solid-state inductance, multiferroic.

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The existence and origin of field-induced ferrimagnetic order transition of LuFe2O4 single crystal

Cited by 6 publications

References 42 publications

N-Doped Hollow Multichannel Carbon Nanofibers Encased in Fe₃C for Lithium-Ion Storage

N-Doped Hollow Multichannel Carbon Nanofibers Encased in Fe₃C for Lithium-Ion Storage

Unconventional room-temperature negative magnetoresistance effect in Au/n-Ge:Sb/Au devices

Negative dynamic dielectric permittivity of a ceramic multiferroic LuFe-=SUB=-2-=/SUB=-O-=SUB=-4-=/SUB=- with oxygen nonstoichiometry under the combined influence of temperature and electric field

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The existence and origin of field-induced ferrimagnetic order transition of LuFe2O4 single crystal

Cited by 6 publications

References 42 publications

N-Doped Hollow Multichannel Carbon Nanofibers Encased in Fe3C for Lithium-Ion Storage

N-Doped Hollow Multichannel Carbon Nanofibers Encased in Fe3C for Lithium-Ion Storage

Unconventional room-temperature negative magnetoresistance effect in Au/n-Ge:Sb/Au devices

Negative dynamic dielectric permittivity of a ceramic multiferroic LuFe-=SUB=-2-=/SUB=-O-=SUB=-4-=/SUB=- with oxygen nonstoichiometry under the combined influence of temperature and electric field

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N-Doped Hollow Multichannel Carbon Nanofibers Encased in Fe₃C for Lithium-Ion Storage

N-Doped Hollow Multichannel Carbon Nanofibers Encased in Fe₃C for Lithium-Ion Storage