Effect of magnetic and electric fields on electrical and magnetic properties of multiferroic BiMnO 3 films

Alrub, Ahmad Musleh; Lim, Kok‐Geng; Chew, Khian−Hooi

doi:10.1016/j.jmmm.2018.03.031

Cited by 7 publications

(3 citation statements)

References 31 publications

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“…Magnetostriction refers to the alteration in length or volume of ferromagnetic materials when they are magnetized in an external magnetic field [1][2][3][4][5]. Materials with excellent magnetostrictive properties hold significant potential for various applications including sensors, brakes, micro-electro-mechanical systems, energy harvesting, and underwater sonar scanning [6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Molecular Dynamics Simulation of the Effect of Defect Size on Magnetostrictive Properties of Low-Dimensional Iron Thin Films

Yang,

Ma,

Zhang

et al. 2023

Nanomaterials

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Defects are an inevitable occurrence during the manufacturing and use of ferromagnetic materials, making it crucial to study the microscopic mechanism of magnetostrictive properties of ferromagnetic materials with defects. This paper conducts molecular dynamics simulations on low-dimensional iron thin films containing hole or crack defects, analyzes and compares the impact of defect size on magnetostrictive properties, and investigates the microscopic mechanism of their effects. The results indicate that the saturation magnetostrictive strains of the defect models do not increase monotonically as the defect size increases. Additionally, it is discovered that the arrangement of atomic magnetic moments in the initial magnetic moment configuration also affects the magnetostrictive properties. When controlling the size of the hole or crack within a certain defect area, it is found that the hole size has less influence on the initial magnetic moment configuration, resulting in a smaller corresponding change in the saturation strain and thus having a lesser impact on the magnetostrictive properties. Conversely, when the crack size changes, the arrangement of the atomic magnetic moments in the initial magnetic moment configuration changes more significantly, resulting in a greater corresponding change in saturation strain, and thus having a greater impact on the magnetostriction performance.

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Section: Introductionmentioning

confidence: 99%

Molecular Dynamics Simulation of the Effect of Defect Size on Magnetostrictive Properties of Low-Dimensional Iron Thin Films

Yang,

Ma,

Zhang

et al. 2023

Nanomaterials

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“…When a ferromagnetic material is exposed to a magnetic field, its dimensions change, and this effect is called magnetostriction [ 1 , 2 , 3 , 4 ]. Due to the excellent characteristics of large magnetoelastic coupling coefficient, large output stress, fast mechanical response and strong stability, magnetostrictive materials have important application value and broad application prospects in the fields of robot, automobile brake, sensor, transducer, displacement device, high-energy micro power device, acoustics, magnetism and so on [ 5 , 6 , 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Crack Defects on Magnetostriction and Magnetic Moment Evolution of Iron Thin Films

2022

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Molecular dynamics simulations of body-centered cubic (bcc) iron thin films with crack defects were carried out by adopting methods of EAM (Embedded Atom Method) potential, spin/exchange potential and spin/neel potential. In this article, the effects of the variation of distance between two crack defects and their directions on the magnetostrictive properties of the thin films are studied, and the corresponding microscopic mechanism is also analyzed. The results show that the defects affect the atomic magnetic moment nearby, and the magnetostrictive properties of thin iron films vary with the direction and spacing of the crack defects. If the defect spacing is constant, the iron model with crack perpendicular to the magnetization direction has stronger magnetostriction than that of parallel to the magnetization direction. The variation of the defect spacing has a great influence on the magnetostrictive properties of the iron model with crack direction parallel to magnetization direction, but it has a small effect on another perpendicular situation. The atoms between the defects may move, but if the defect spacing increases to a certain value, then none of the atoms will move.

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“…On the other hand, multiferroic materialspossessing more than one of the ferroelectricity, magnetic ordering, and ferroelasticity simultaneouslyhave been found in heterostructures and composites, − especially in that with perovskite structures, like YMnO 3 , BiFeO 3 , , BiMnO 3 , − and EuTiO 3 . These compounds bearing rich functionality present promising applications in sensors and high-performance storage devices.…”

Section: Introductionmentioning

confidence: 99%

Multiferroic Metal–PbNb_0.12Ti_0.88O_3−δ Films on Nb-Doped STO

Yao

Wang

Jin

et al. 2019

ACS Appl. Electron. Mater.

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Ferroelectricity-the switchable intrinsic electric polarization-has not yet been attained in a metal experimentally and is in fact generally deemed irreconcilable with free carriers, although polar metal has been achieved recently. Multiferroic metal has never even been proposed though multiferroics have been widely investigated. Here we report a room-temperature coexistence of multiferroicity and metallic behavior in PbNb0.12Ti0.88O3-δ films. The oxygenvacancy-induced electrons become delocalized and ameliorate the ferromagnetic properties of these films, whereas they fail to vanish the polar displacements nor the individual dipole in each unit cell. This concurrent appearance of multiferroicity and metallicity is also confirmed by our 2 first-principles calculation performed on 12.5% Nb-doped PbTiO3 with oxygen vacancies. These findings break a path to multiferroic metallic materials and offer a potential application for multiferroic spintronic devices.

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Effect of magnetic and electric fields on electrical and magnetic properties of multiferroic BiMnO 3 films

Cited by 7 publications

References 31 publications

Molecular Dynamics Simulation of the Effect of Defect Size on Magnetostrictive Properties of Low-Dimensional Iron Thin Films

Molecular Dynamics Simulation of the Effect of Defect Size on Magnetostrictive Properties of Low-Dimensional Iron Thin Films

Effect of Crack Defects on Magnetostriction and Magnetic Moment Evolution of Iron Thin Films

Multiferroic Metal–PbNb_0.12Ti_0.88O_3−δ Films on Nb-Doped STO

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Effect of magnetic and electric fields on electrical and magnetic properties of multiferroic BiMnO 3 films

Cited by 7 publications

References 31 publications

Molecular Dynamics Simulation of the Effect of Defect Size on Magnetostrictive Properties of Low-Dimensional Iron Thin Films

Molecular Dynamics Simulation of the Effect of Defect Size on Magnetostrictive Properties of Low-Dimensional Iron Thin Films

Effect of Crack Defects on Magnetostriction and Magnetic Moment Evolution of Iron Thin Films

Multiferroic Metal–PbNb0.12Ti0.88O3−δ Films on Nb-Doped STO

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Multiferroic Metal–PbNb_0.12Ti_0.88O_3−δ Films on Nb-Doped STO