Magnetic properties of NiMn2O4−δ (nickel manganite): Multiple magnetic phase transitions and exchange bias effect

Tadić, Marin; Savić, S.; Jagličić, Zvonko; Vojisavljević, Katarina; Radojković, Aleksandar; Pršić, S.; Nikolić, Dragan

doi:10.1016/j.jallcom.2013.11.025

Cited by 32 publications

(5 citation statements)

References 57 publications

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“…Starting with the asymmetry, this property of magnetic systems is usually found in exchange bias systems, as mentioned before. In addition to the most typical EB system, composed of a ferromagnet exchange-coupled to an antiferromagnet, there are also less usual material combinations or even pure materials that are able to exhibit an exchange bias, such as the recently found NiMn 2 O 4 [23,24]. Similarly, in several material systems, it cannot be excluded that ferromagnetic clusters form in antiferromagnetic metal oxides, or that the surface of a ferromagnetic metal is unintentionally oxidized to an antiferromagnetic state [25,26].…”

Section: Discussionmentioning

confidence: 99%

Asymmetric Hysteresis Loops in Co Thin Films

Ehrmann

Błachowicz

2020

Condensed Matter

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Asymmetric magnetic hysteresis loops are usually found in exchange bias (EB) systems, typically after field cooling a system below the Néel temperature of an antiferromagnet exchange coupled to a ferromagnet. Alternatively, asymmetric hysteresis loops may occur due to undetected minor loops or in systems with a rotational anisotropy. Here, we report on an exchange bias thin film system MgO(100)/Co/CoO, examined at room temperature, which is far above the blocking temperature, by the magneto-optical Kerr effect (MOKE). While the longitudinal hysteresis loops partly show steps which are well-known from diverse purely ferromagnetic systems, the transverse hysteresis loops exhibit clear asymmetries, similar to exchange biased systems at low temperatures, and unusual transverse magnetization values at saturation. Since minor loops and a rotational anisotropy can be excluded in this case, this asymmetry can possibly be a residue of the exchange bias coupling at lower temperatures.

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Section: Discussionmentioning

confidence: 99%

Asymmetric Hysteresis Loops in Co Thin Films

Ehrmann

Błachowicz

2020

Condensed Matter

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“…Different fuels and fuel to oxidant ratios can be used in order to obtain nano-sized powders with controllable morphological features [29,30]. Previously this method was successfully utilized for the synthesis of high-quality single [31,32] and mixed-metal oxide materials [33][34][35] with magnetic and electrical properties. Different bi-and tri-metallic manganites with magnetic properties were also prepared by sol-gel combustion using glycine-nitrate method [36][37][38].…”

Section: Introductionmentioning

confidence: 99%

Novel synthetic approach to the preparation of single-phase BixLa1−xMnO3+δ solid solutions

Karoblis

Mažeika

Baltrūnas

et al. 2019

J Sol-Gel Sci Technol

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In this study, the Bi x La 1−x MnO 3+δ solid solutions (x from 0 to 0.65) were synthesized using sol-gel combustion method with citric acid as a fuel and complexing agent. It was shown that changes in chemical composition of the materials lead to the evolution of crystal structure, morphology, and magnetic properties. The thermal behavior of precursor gel was investigated by thermogravimetric and differential scanning calorimetry (TG-DSC) measurements. X-ray diffraction (XRD) analysis demonstrated that all samples were monophasic. The Rietveld analysis showed that the structure can be indexed by trigonal or cubic unit cell depending on Bi 3+ content. Scanning electron microscopy (SEM) was used to evaluate morphological features of the synthesized materials and revealed that Bi 3+ ions significantly promote growth of the grains. The sol-gel-derived Bi x La 1−x MnO 3+δ specimens were also characterized by FT-IR spectroscopy and magnetization measurements, which showed a clear correlation between magnetic properties and crystal structure of the materials.

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“…14,15 These hierarchical structures are also important as potential electrode materials for lithium ion batteries (LIBs) and exhibit superior electrochemical performances because of their unique properties compared with their bulk counterparts. [16][17][18][19] As an important spinel binary metal oxide, NiMn 2 O 4 has been applied in many fields, such as magnetism, 20,21 catalysis, 22 negative temperature coefficient thermistors, 23 sensors, 24 supercapacitor, etc. 25,26 NiMn 2 O 4 nanostructures have been synthesized by various methods including solid-state reaction, 27 co-precipitation, 28 sol-gel, 29 and microemulsionmediated routes.…”

Section: Introductionmentioning

confidence: 99%

High interfacial storage capability of porous NiMn₂O₄/C hierarchical tremella-like nanostructures as the lithium ion battery anode

et al. 2015

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Porous hierarchical NiMn2O4/C tremella-like nanostructures are obtained through a simple solvothermal and calcination method. As the anode of lithium ion batteries (LIBs), porous NiMn2O4/C nanostructures exhibit a superior specific capacity and an excellent long-term cycling performance even at a high current density. The discharge capacity can stabilize at 2130 mA h g(-1) within 350 cycles at a current density of 1000 mA g(-1). After a long-term cycling of 1500 cycles, the capacity is still as high as 1773 mA h g(-1) at a high current density of 4000 mA g(-1), which is almost five times higher than the theoretical capacity of graphite. The porous NiMn2O4/C hierarchical nanostructure provides sufficient contact with the electrolyte and fast three-dimensional Li(+) diffusion channels, and dramatically improves the capacity of NiMn2O4/C via interfacial storage.

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Magnetic properties of NiMn2O4−δ (nickel manganite): Multiple magnetic phase transitions and exchange bias effect

Cited by 32 publications

References 57 publications

Asymmetric Hysteresis Loops in Co Thin Films

Asymmetric Hysteresis Loops in Co Thin Films

Novel synthetic approach to the preparation of single-phase BixLa1−xMnO3+δ solid solutions

High interfacial storage capability of porous NiMn₂O₄/C hierarchical tremella-like nanostructures as the lithium ion battery anode

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Magnetic properties of NiMn2O4−δ (nickel manganite): Multiple magnetic phase transitions and exchange bias effect

Cited by 32 publications

References 57 publications

Asymmetric Hysteresis Loops in Co Thin Films

Asymmetric Hysteresis Loops in Co Thin Films

Novel synthetic approach to the preparation of single-phase BixLa1−xMnO3+δ solid solutions

High interfacial storage capability of porous NiMn2O4/C hierarchical tremella-like nanostructures as the lithium ion battery anode

Contact Info

Product

Resources

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High interfacial storage capability of porous NiMn₂O₄/C hierarchical tremella-like nanostructures as the lithium ion battery anode