Electric-field control of magnetization reversal in a Y-type hexaferrite

Yang, Yanting; Wang, L.Y.; Shen, Lan; Zhou, Weiping; Song, Yanmei; Lv, L. Y.; Wang, D.H.; Cao, Qingqi; Du, Youwei; Zhang, Y.J.; Yang, Jing

doi:10.1016/j.ssc.2013.11.001

Cited by 10 publications

(10 citation statements)

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“…In 2010, Y. Wang et al53 reported rod‐like particles of LiMnPO 4 /C synthesised by a solvothermal method, where LiMnPO 4 was synthesized from LiOH·H 2 O, H 3 PO 4 , MnSO 4 ·H 2 O, and CTAB. The stoichiometric amount of the precursors was dissolved in 1:1 (v/v) ethanol–water mixed solvent.…”

Section: Solvothermal Synthesis Of Limpo4 (M = Femn) Nanomaterialmentioning

confidence: 99%

Section: Solvothermal Synthesis Of Limpo4 (M = Femn) Nanomaterialmentioning

confidence: 99%

“…This low discharge capacity is due to the much lower intrinsic electronic conductivity: the local lattice distortion caused by the Jahn–Teller effect of Mn 3+ could be the main reason for the kinetic difference 59. The rod‐like LiMnPO 4 53 particles with 150 nm diameters exhibited much higher discharge capacities than the plate‐like LiMnPO 4 particles 55. This difference might be due to the effect of the particles having sizes on the nanoscale.…”

Section: Solvothermal Synthesis Of Limpo4 (M = Femn) Nanomaterialmentioning

confidence: 99%

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Hydrothermal and Solvothermal Process Towards Development of LiMPO₄ (M = Fe, Mn) Nanomaterials for Lithium‐Ion Batteries

Devaraju

Honma

2012

Advanced Energy Materials

303

167

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Positive electrodes such as LiFePO 4 and LiMnPO 4 nanomaterials with olivine structures are considered as most efficient cathode materials for application in lithium ion batteries. Recently, several methods have been proposed for the preparation of lithium metal phosphates as cathodes for lithium ion batteries and their electrochemical performances have been investigated. Over the last 20 years, several synthetic methods have been proposed for lithium metal phosphate nanomaterials. In this review, hydrothermal and solvothermal syntheses of LiFePO 4 and LiMnPO 4 nanomaterials at low and high temperatures are discussed, including microwave-hydrothermal and microwave-solvothermal methods. The effect of particle size and particle morphology on the electrochemical properties of LiFePO 4 and LiMnPO 4 cathode materials are also discussed. In addition, the recently emerged supercritical solvothermal and supercritical hydrothermal syntheses of LiFePO 4 and LiMnPO 4 nanomaterials and their electrochemical property also been addressed.in high-power systems such as hybrid electric vehicles (HEVs) and electric vehicles (EVs). In this context, olivine LiMPO 4 (M = Fe, Mn, Co, Ni) serves as an excellent candidate for cathode materials when compared with other cathodes such as LiCoO 2 , LiNiO 2 , and LiMn 2 O 4 , [1] because these materials are inexpensive and environmentally benign, and the covalently bonded PO 4 groups together with the chemically more stable Fe 2+/3+ couple offer excellent thermal stability and safety. [1,2] Moreover, with a theoretical capacity of 170 mAh g −1 , LiFePO 4 operates at a flat voltage of 3.45 V versus Li/Li + , which is compatible with the commercial electrolytes used now in lithium ion batteries. On the other hand, the other LiMPO 4 (M = Mn, Co, and Ni) cathodes with Mn 2+/3+ , Co 2+/3+ , and Ni 2+/3+ couples have been shown to operate at much higher voltages of 4.1, 4.8, and 5.

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Section: Solvothermal Synthesis Of Limpo4 (M = Femn) Nanomaterialmentioning

confidence: 99%

Section: Solvothermal Synthesis Of Limpo4 (M = Femn) Nanomaterialmentioning

confidence: 99%

Section: Solvothermal Synthesis Of Limpo4 (M = Femn) Nanomaterialmentioning

confidence: 99%

See 1 more Smart Citation

Hydrothermal and Solvothermal Process Towards Development of LiMPO₄ (M = Fe, Mn) Nanomaterials for Lithium‐Ion Batteries

Devaraju

Honma

2012

Advanced Energy Materials

303

167

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“…The optical transitions in the system can be alternated, after electrical gating of graphene and BLG [13], and the effects are very similar to the case of the charge transport in the field-effect transistor constructions [14,15]. The optical and charge transport properties in the BLG structures have been widely studied both theoretically [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30] and experimentally [31][32][33][34]. The optical conductivity has been crucial for the optical determination of the band gap formation in the BLG [35][36][37][38].…”

Section: Introductionmentioning

confidence: 99%

High energy shift in the optical conductivity spectrum of the bilayer graphene

Apinyan

Kopeć

2018

Eur. Phys. J. B

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We calculate theoretically the optical conductivity in the bilayer graphene by considering Kubo-Green-Matsubara formalism. Different regimes of the interlayer coupling parameter have been considered in the paper. We show that the excitonic effects substantially affect the optical conductivity spectrum at the high-frequency regime when considering the full interaction bandwidth, leading to a total suppression of the usual Drude intraband optical transition channels and by creating a new type of optical gap. We discuss the role of the interlayer coupling parameter and the Fermi level on the conductivity spectrum, going far beyond the usual tight-binding approximation scheme for the extrinsic bilayer graphene.

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“…Magnetoelectric multiferroics have attracted significant interest in recent research activities because they can present unusual physical phenomena like remarkable magnetoelectric effects with potential applications in ultra-dense magnetic storage devices, as low power spintronic devices, or effective medical drug delivery [1][2][3][4]. Among the compounds with this characteristic, ferroxplana type hexaferrites with Z and Y phases are very promising materials, due to the giant magnetoelectric coupling between magnetism and ferroelectricity caused by the spin transitions from longitudinal to transverse helimagnetic phases and the low magnetic fields to switch the electric polarization [5][6][7]. Particular interest is devoted to Y type structures with composition ([BaSr] 2 Me 2 Fe 12 O 22 ) because pure phase formation of Z type is challenging.…”

Section: Introductionmentioning

confidence: 99%

Broadband transverse susceptibility in multiferroic Y-type hexaferrite Ba0.5Sr1.5Zn2Fe12O22

Hernández-Gómez

Martín-González

Torres

et al. 2020

Journal of Magnetism and Magnetic Materials

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Noncollinear spin systems with magnetically induced ferroelectricity from changes in spiral magnetic ordering have attracted significant interest in recent research due to their remarkable magnetoelectric effects with promising applications. Single phase multiferroics are of great interest for these new multifunctional devices, being Y-type hexaferrites good candidates, and among them the ZnY compounds due to their ordered magnetic behaviour over room temperature. Polycrystalline Y type hexaferrites with composition Ba 0.5 Sr 1.5 Zn 2 Fe 2 O 22 (BSZFO) were sintered in 1050º C-1250º C temperature range.Transverse susceptibility measurements carried out on these BSZFO samples in the temperature range 80-350 K with DC fields up to ±5000 Oe reveal different behaviour depending on the sintering temperature.Sample sintered at 1250 ºC is qualitatively different, suggesting a mixed Y and Z phase like CoY hexaferrites. Sintering at lower temperatures produce single phase Y-type, but the transverse susceptibility behaviour of the sample sintered at 1150 ºC is shifted at temperatures 15 K higher. Regarding the DC field sweeps the observed behaviour is a peak that shifts to lower values with increasing temperature, and the samples corresponding to single Y phase exhibit several maxima and minima in the 250 K -330 K range at low DC applied field as a result of the magnetic field induced spin transitions in this compound.

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Electric-field control of magnetization reversal in a Y-type hexaferrite

Cited by 10 publications

References 29 publications

Hydrothermal and Solvothermal Process Towards Development of LiMPO₄ (M = Fe, Mn) Nanomaterials for Lithium‐Ion Batteries

Hydrothermal and Solvothermal Process Towards Development of LiMPO₄ (M = Fe, Mn) Nanomaterials for Lithium‐Ion Batteries

High energy shift in the optical conductivity spectrum of the bilayer graphene

Broadband transverse susceptibility in multiferroic Y-type hexaferrite Ba0.5Sr1.5Zn2Fe12O22

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Electric-field control of magnetization reversal in a Y-type hexaferrite

Cited by 10 publications

References 29 publications

Hydrothermal and Solvothermal Process Towards Development of LiMPO4 (M = Fe, Mn) Nanomaterials for Lithium‐Ion Batteries

Hydrothermal and Solvothermal Process Towards Development of LiMPO4 (M = Fe, Mn) Nanomaterials for Lithium‐Ion Batteries

High energy shift in the optical conductivity spectrum of the bilayer graphene

Broadband transverse susceptibility in multiferroic Y-type hexaferrite Ba0.5Sr1.5Zn2Fe12O22

Contact Info

Product

Resources

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Hydrothermal and Solvothermal Process Towards Development of LiMPO₄ (M = Fe, Mn) Nanomaterials for Lithium‐Ion Batteries

Hydrothermal and Solvothermal Process Towards Development of LiMPO₄ (M = Fe, Mn) Nanomaterials for Lithium‐Ion Batteries