Investigation on the structural, multiferroic and magnetoelectric properties of BaTi1-xNixO3 ceramics

Rani, Alka; Kolte, Jayant; Gopalan, P.

doi:10.1016/j.ceramint.2018.11.229

Cited by 19 publications

(7 citation statements)

References 60 publications

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“…Despite the possible applicability to various ME devices, a single-phase multiferroic rarely exists in nature or has weak multiferroism at room temperature 14 . Hence, many researchers have attempted to overcome this problem with a variety of approaches, which include substituting magnetic impurities or cations and making heterostructure materials based on ferroelectric and ferromagnetic materials 16,17 . In single-phase multiferroics, barium hexaferrites have attracted attention because of their interesting magnetic structure, in which electric polarization can be induced at room temperature, and their high resistivity.…”

Section: Introductionmentioning

confidence: 99%

Reversible magnetoelectric switching in multiferroic three-dimensional nanocup heterostructure films

Hong

et al. 2019

NPG Asia Mater

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Self-assembled nanocomposite films containing ferroelectric and ferromagnetic phases have attracted enormous research interest because they are the most promising candidates for practical multiferroic applications. However, obtaining a genuine magnetoelectric (ME) coupling effect is still challenging in this research area. To substantially improve the ME effect, new heterostructure designs with efficient strain control between two phases are urgently needed. Herein, a novel three-dimensional (3D) nanocup architecture of a heterostructure film is developed. To establish the unique architecture, a heavily Co, Fe-doped ferroelectric Bi 3.25 La 0.75 Ti 3 O 12 (BLT) target was used during the growth of BLT thin films via pulsed laser deposition. Consequently, 3D nanocup-structured CoFe 2 O 4 (CFO) particles formed inside the BLT via spontaneous nucleation and agglomeration. The 3D nanocup BLT-CFO film exhibited magnetically controlled reversible dielectric switching, which is direct evidence of strong ME coupling caused by the efficient interfacial strain coupling and low leakage of the novel nanocup architecture. The obtained results strongly suggest that the 3D nanocup heterostructure film significantly improves the ME coupling effect. In addition, we propose a new paradigm in the architecture design of self-assembled nanocomposite films for diverse multifunctional devices.

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Section: Introductionmentioning

confidence: 99%

Reversible magnetoelectric switching in multiferroic three-dimensional nanocup heterostructure films

Hong

et al. 2019

NPG Asia Mater

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“…However, there are few natural single‐phase magnetoelectric materials as conventional ferroelectricity requires closed‐shell d 0 or s 2 cations, whereas ferromagnetism needs open‐shell d n configurations with unpaired electrons . To avoid such natural exclusion between magnetism and ferroelectricity, considerable effort has focused on the introduction of magnetism (ferroelectricity) in ferroelectrics (ferromagnetics) and the search for type‐II multiferroics, where ferroelectricity is caused by special magnetic orders rather than the intrinsic noncentrosymmetric crystal structure …”

Section: Introductionmentioning

confidence: 99%

Multiferroic Properties and Magnetoelectric Coupling of Fe‐Doped (Ba_0.7Ca_0.3)TiO₃‐Ba(Zr_0.2Ti_0.8)O₃ Ceramics

Gong

Huang

Shao

et al. 2019

Physica Status Solidi (a)

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Fe-doped (Ba 0.7 Ca 0.3 )TiO 3 -Ba(Zr 0.2 Ti 0.8 )O 3 (BCZT) ceramics are prepared by a conventional solid-state reaction method, and their structure, multiferroic, and coupling properties are investigated. Ferromagnetism and magnetoelectric coupling are successfully realized by Fe 3þ doping. Meanwhile, Fe 3þ doping in BCZT results in a gradual transition from typical ferroelectrics to relaxor ferroelectrics or even quantum paraelectrics. In consequence, obvious magnetodielectric (MD) effect is observed only among the morphotropic phase boundary (MPB) temperature range. For (Ba 1.7 Ca 0.3 )(Zr 0.2 Ti 1.7 Fe 0.1 )O 6 ceramics, the coexistence of ferroelectricity and ferromagnetism along with a large MD effect is obtained below 200 K. Herein, the results highlight the role of MPB on the magnetoelectric coupling of ferroelectrics with a percolating of magnetic ions.

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“…It must be mentioned that the dielectric properties of Mn [38,39] as well as Co and Ni [40,41] doped BTO ceramics and thin films can also be described with our model. The authors obtained a decrease in ϵ 0 and TC with increase in the dopant concentration.…”

Section: Numerical Results and Discussionmentioning

confidence: 99%

Dielectric Properties in Transition Metal and Rare‐Earth‐Doped Multiferroic BaTiO₃ Nanoparticles

Apostolov

Apostolova

Wesselinowa

2020

Physica Status Solidi (b)

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The temperature, doping concentration, size, and magnetic field dependences of the real part of the dielectric function ϵ′ for Fe and Er ion‐doped BaTiO3bulk and nanoparticles—are calculated using microscopic models and the Green's function technique. The Fe ions substitute the Ti ions and cause a tensile strain. The maximum value of ϵ′ and the ferroelectric phase transition temperature TC decrease with increasing the Fe doping concentration. Moreover, ϵ′ decreases with decreasing particle size and increases with increasing an external magnetic field. The latter is an evidence for a strong magnetodielectric effect. By substituting the Ba with Er ions, there appears a strong compressive strain. It causes an increase in the maximum of ϵ′ and TC with increasing the Er ion concentration.

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Investigation on the structural, multiferroic and magnetoelectric properties of BaTi1-xNixO3 ceramics

Cited by 19 publications

References 60 publications

Reversible magnetoelectric switching in multiferroic three-dimensional nanocup heterostructure films

Reversible magnetoelectric switching in multiferroic three-dimensional nanocup heterostructure films

Multiferroic Properties and Magnetoelectric Coupling of Fe‐Doped (Ba_0.7Ca_0.3)TiO₃‐Ba(Zr_0.2Ti_0.8)O₃ Ceramics

Dielectric Properties in Transition Metal and Rare‐Earth‐Doped Multiferroic BaTiO₃ Nanoparticles

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Investigation on the structural, multiferroic and magnetoelectric properties of BaTi1-xNixO3 ceramics

Cited by 19 publications

References 60 publications

Reversible magnetoelectric switching in multiferroic three-dimensional nanocup heterostructure films

Reversible magnetoelectric switching in multiferroic three-dimensional nanocup heterostructure films

Multiferroic Properties and Magnetoelectric Coupling of Fe‐Doped (Ba0.7Ca0.3)TiO3‐Ba(Zr0.2Ti0.8)O3 Ceramics

Dielectric Properties in Transition Metal and Rare‐Earth‐Doped Multiferroic BaTiO3 Nanoparticles

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Multiferroic Properties and Magnetoelectric Coupling of Fe‐Doped (Ba_0.7Ca_0.3)TiO₃‐Ba(Zr_0.2Ti_0.8)O₃ Ceramics

Dielectric Properties in Transition Metal and Rare‐Earth‐Doped Multiferroic BaTiO₃ Nanoparticles