Large magnetoelectric coupling in nanoscale<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>BiFeO</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:math>from direct electrical measurements

Goswami, Sudipta; Bhattacharya, Dipten; Keeney, Lynette; Maity, Tuhin; Kaushik, S. D.; Siruguri, V.; Das, G. C.; Yang, Huai; Li, Wuxia; Gu, Changzhi; Pemble, Martyn E.; Roy, Saibal

doi:10.1103/physrevb.90.104402

Cited by 25 publications

(7 citation statements)

References 34 publications

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“…The recorded magnetization values of the samples solved in ethylene glycol are larger than that of the samples solved in acetic acid. In this studies, the obtained Ms values of the samples are larger than the values recorded in the previous studies about BiFeO3 (Layek et al 2013;Goswami et al 2014;Du et al 2010;Hasan et al 2016)…”

Section: Magnetic Propertiescontrasting

confidence: 70%

Synthesis and Investigation of Structural and Magnetic Properties of Nickel Doped BiFeO3

Topkaya

Çiçek

Koçyiğit

2021

Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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Ni doped BiFeO3 powders were synthesized by sol-gel method. The effect of annealing temperature and solvent type on the structural and magnetic properties of the synthesized powders has been studied by XRD, SEM, EDX, VSM and FMR techniques at the room temperature. XRD results highlighted that the Ni doped BiFeO3 powders were successfully synthesized. The morphology changes with annealing temperature and solvent material. With EDX analysis, all the elements in Ni doped BiFeO3 powders were confirmed. The magnetic properties of the samples were observed to strongly depend on annealing temperature and solvent material. The saturation magnetization is observed to increase with an increasing annealing temperature. The broad resonance lines indicate ferromagnetic property.

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Section: Magnetic Propertiescontrasting

confidence: 70%

Synthesis and Investigation of Structural and Magnetic Properties of Nickel Doped BiFeO3

Topkaya

Çiçek

Koçyiğit

2021

Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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“…This material exhibited a ME coupling coefficient ~ 0.36 mV/cm.Oe [larger than most reported values for BiFeO3 but about an order of magnitude lower than the highest reported (but unconfirmed) value of 7 mV/cm.Oe for nanocrystalline BiFeO3]. 13 This value is also an order of magnitude smaller than in cryogenic antiferromagnetic LiCoPO4 or TbPO4, or in ferromagnetic YIG (5.52, 6.62, and 5.41 mV/cm.Oe).…”

Section: Introductionmentioning

confidence: 99%

Palladium-based ferroelectrics and multiferroics: Theory and experiment

et al. 2017

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Palladium normally does not easily substitute for Ti or Zr in perovskite oxides. Moreover, Pd is not normally magnetic (but becomes ferromagnetic under applied uniaxial stress or electric fields). Despite these two great obstacles, we have succeeded in fabricating lead zirconate titanate with 30% Pd substitution. For 20:80 Zr:Ti the ceramics are generally single-phase perovskite (>99%), but sometimes exhibit 1% PbPdO2, which is magnetic below T=90K. The resulting material is multiferroic (ferroelectric-ferromagnet) at room temperature. The processing is slightly unusual (>8 hrs in high-energy ball-milling in Zr balls), and the density functional theory provided shows that it occurs because of Pd +4 in the oversized Pb +2 site; if all Pd +4 were to go into the Ti +4 perovskite B-site, no magnetism would result.

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“…In the case of nanoscale BiFeO 3 too, from the neutron diffraction data under a magnetic field, it has been shown that ionic displacement indeed takes place under a magnetic field. 17 It is worth mentioning here that the magnetic structure in TbMnO 3 , BiFeO 3 , and LuFeO 3 are different. For LuFeO 3 , significantly large change in electronic and ionic structure under a magnetic field could lead to the observed change in the remanent polarization.…”

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confidence: 96%

Room temperature multiferroicity in orthorhombic LuFeO3

Chowdhury

Goswami

Bhattacharya

et al. 2014

Applied Physics Letters

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From the measurement of dielectric, ferroelectric, and magnetic properties we observe simultaneous ferroelectric and magnetic transitions around ∼600 K in orthorhombic LuFeO 3 . We also observe suppression of the remanent polarization by ∼95% under a magnetic field of ∼15 kOe at room temperature. The extent of suppression of the polarization under magnetic field increases monotonically with the field. These results show that even the orthorhombic LuFeO 3 is a room temperature multiferroic of type-II variety exhibiting quite a strong coupling between magnetization and polarization.PACS numbers: 75.80.+q, 75.75.+a, 77.80.-e The magnetoelectric multiferroics with strong crosscoupling between ferroelectric and magnetic order parameters have attracted a lot of attention during the last one decade because of their potential in radically enhancing the functionalities of the spintronics-based devices for many, including bio-medical, applications. 1 A room temperature multiferroic, for obvious reasons, is always the most sought-after compound. Apart from BiFeO 3 , other systems such as CuO3] have also been identified as potential high temperature multiferroic compounds. In recent time, hexagonal LuFeO 3 is found to exhibit multiferroicity at room temperature. 4 Coexistence of ferrimagnetic and ferroelectric orders was reported in orthorhombic LuFe 1−x Mn x O 3 as well. 5 However, in none of these recent work direct measurement of the multiferroic coupling has been attempted. In this Letter, we show that even the pure orthorhombic-LuFeO 3 , in bulk form, exhibits large magnetoelectric multiferroic coupling at room temperature. The remanent polarization (P r ) is suppressed by ∼95% under a magnetic field of ∼15 kOe. The extent of suppression of P r increases monotonically with the increase in magnetic field. The ferroelectric and magnetic transitions are simultaneous around ∼600 K indicating magnetic structure driven ferroelectricity. This observation signfies that the orthorhombic LuFeO 3 is a multiferroic of type-II variety.The structurally nonpolar orthoferrites such as SmFeO 3 , YFeO 3 , LuFeO 3 etc. exhibit small yet finite ferroelectric polarization because of noncollinear spin structure with canted antiferromagnetic order. [6][7][8] This magnetic order induces a spin current 9 via spinorbit-coupling driven antisymmetric exchange interaction along the Fe 3+ -O 2− -Fe 3+ pathway. The spin current ( j s ) in such a noncollinear magnetic structure breaks the a) Electronic mail: dipten@cgcri.res.in centrosymmetry of the electronic charge density distribution and yields a finite polarization ( P ∝ j s ). 9,10 These compounds, where magnetism drives ferroelectricity, belong to the type-II category of the multiferroics. Interestingly, unlike the well-known perovskite manganites such as TbMnO 3 or DyMnO 3 , the rare-earth orthoferrites exhibit the ferroic transitions at well above the room temperature. In fact, for many of these orthoferrites, the magnetic and ferroelectric transition points (T N and T C , respectively) ar...

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Large magnetoelectric coupling in nanoscaleBiFeO3from direct electrical measurements

Cited by 25 publications

References 34 publications

Synthesis and Investigation of Structural and Magnetic Properties of Nickel Doped BiFeO3

Synthesis and Investigation of Structural and Magnetic Properties of Nickel Doped BiFeO3

Palladium-based ferroelectrics and multiferroics: Theory and experiment

Room temperature multiferroicity in orthorhombic LuFeO3

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