Magnetic properties of (Bi1−xLax)(Fe,Co)O3 films fabricated by a pulsed DC reactive sputtering and demonstration of magnetization reversal by electric field

Abstract(Bi1−xLax)(Fe,Co)O3 multiferroic magnetic film were fabricated using pulsed DC (direct current) sputtering technique and demonstrated magnetization reversal by applied electric field. The fabricated (Bi0.41La0.59)(Fe0.75Co0.25)O3 films exhibited hysteresis curves of both ferromagnetic and ferroelectric behavior. The saturated magnetization (Ms) of the multiferroic film was about 70 emu/cm3. The squareness (S) (= remanent magnetization (Mr)/Ms) and coercivity (Hc) of perpendicular to film plane are 0.64 and 4.2 kOe which are larger compared with films in parallel to film plane of 0.5 and 2.5 kOe. The electric and magnetic domain structures of the (Bi0.41La0.59)(Fe0.75Co0.25)O3 film analyzed by electric force microscopy (EFM) and magnetic force microscopy (MFM) were clearly induced with submicron scale by applying a local electric field. This magnetization reversal indicates the future realization of high performance magnetic device with low power consumption.

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Computational Modelling of Ring-Shaped Magnetic Domains

MRS Proceedings ◽

10.1557/proc-529-157 ◽

1998 ◽

Vol 529 ◽

Author(s):

A.F. Gal'tsev ◽

V.G. Pokazan'ev ◽

Y.I. Yalishev

Keyword(s):

Local Density ◽

Computational Modelling ◽

Low Frequency ◽

Magnetic Domain ◽

Magnetic Film ◽

Static Stability ◽

Film Plane ◽

Theoretical Research ◽

Magnetization Distribution ◽

Domain Structures

AbstractA theoretical research of static stability of peculiar localized domain structures (LDS) in a thin magnetic film with the perpendicular anisotropy is presented. The model describes a system consisting of cylindrical magnetic domain (CMD) and several concentric ring-shaped domains. Such structures arise under influence of the external low frequency (100–1000 Hz) magnetic field applied perpendicular to the film plane and were observed experimentally in 1992. Non-linear singular integro-differential equation for a magnetization distribution is provided by a minimization condition for the system's complete energy local density. Energy dependencies on geometry parameters are calculated numerically. The conditions of magnetostatic stabilization of the simplest CMD-ring system, as well as some of its dynamical properties, are discussed in detail on this basis.

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Magnetic domain structures and stray fields of individual elongated magnetite grains revealed by magnetic force microscopy (MFM)

Physics of The Earth and Planetary Interiors ◽

10.1016/j.pepi.2003.12.001 ◽

2004 ◽

Vol 141 (2) ◽

pp. 121-129 ◽

Cited By ~ 27

Author(s):

C. Frandsen ◽

S.L.S. Stipp ◽

S.A. McEnroe ◽

M.B. Madsen ◽

J.M. Knudsen

Keyword(s):

Magnetic Force Microscopy ◽

Magnetic Force ◽

Magnetic Domain ◽

Force Microscopy ◽

Domain Structures

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Magnetic force microscopy study of microwave-assisted magnetization reversal in submicron-scale ferromagnetic particles

Applied Physics Letters ◽

10.1063/1.2775047 ◽

2007 ◽

Vol 91 (8) ◽

pp. 082510 ◽

Cited By ~ 76

Author(s):

Y. Nozaki ◽

M. Ohta ◽

S. Taharazako ◽

K. Tateishi ◽

S. Yoshimura ◽

...

Keyword(s):

Magnetization Reversal ◽

Magnetic Force Microscopy ◽

Magnetic Force ◽

Microscopy Study ◽

Force Microscopy ◽

Microwave Assisted ◽

Submicron Scale ◽

Ferromagnetic Particles

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Effects of a Large Content of Yttrium Doping on Microstructure and Magnetostriction of Fe83Ga17 Alloy

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.288.27 ◽

2019 ◽

Vol 288 ◽

pp. 27-36

Author(s):

Li Juan Zhao ◽

Xiao Tian ◽

Zhan Quan Yao ◽

Xuan Zhao ◽

Ojiyed Tegus

Keyword(s):

Magnetic Domain ◽

Melting Furnace ◽

Optical Microscope ◽

Vacuum Arc ◽

Force Microscopy ◽

Domain Structures ◽

Arc Melting ◽

Bcc Structure ◽

Magnetostriction Coefficient ◽

Surface Morphologies

As-cast (Fe0.83Ga0.17)100-xYx (x=0, 3, 6 and 9) alloys were prepared by non-consumable vacuum arc melting furnace under a protective argon atmosphere. The crystal structures and surface morphologies of the alloys were studied by X-ray diffraction (XRD), optical microscope (OM) and scanning electron microscopy (SEM), combined with energy dispersive spectroscopy (EDS), respectively. The surface domain structures were observed by atomic force microscopy (AFM). The magnetostriction coefficients of the alloys were measured by strain gauging method. The results showed that the as-cast Fe83Ga17 alloy was composed only of a single phase of A2 with bcc structure, whereas the ternary Fe-Ga-Y alloys contain multiphase structure, besides the A2 phase, (FeGa)17Y1.76 new phases are observed as well, and an elemental yttrium phase appeared when the yttrium content increased to x=6 and x=9. Doping with yttrium have an effect on the change of magnetic domain structure of the binary alloy. With increasing x, the magnetostriction coefficient of the (Fe0.83Ga0.17)100-xYx alloys decreased sharply. The minimum magnetostriction coefficient is reduced to 12 ppm at the magnetic field of 426kA/m when x=9.

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Thickness-dependent magnetic domain structures of ultrathin Co/Au(111) films studied by means of magnetic force microscopy in ultrahigh vacuum

Applied Physics A ◽

10.1007/s003390050696 ◽

1998 ◽

Vol 66 (4) ◽

pp. 465-467 ◽

Cited By ~ 7

Author(s):

A. Wadas ◽

M. Dreyer ◽

M. Kleiber ◽

R. Wiesendanger

Keyword(s):

Magnetic Force Microscopy ◽

Magnetic Force ◽

Magnetic Domain ◽

Ultrahigh Vacuum ◽

Force Microscopy ◽

Domain Structures

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Fabrication of high-qualified (Bi1− x Ba x )FeO3 multiferroic thin films by using a pulsed DC reactive sputtering method and demonstration of magnetization reversal by electric field

Japanese Journal of Applied Physics ◽

10.7567/jjap.57.0902b7 ◽

2018 ◽

Vol 57 (9) ◽

pp. 0902B7 ◽

Cited By ~ 1

Author(s):

Satoru Yoshimura ◽

Munusamy Kuppan

Keyword(s):

Thin Films ◽

Electric Field ◽

Magnetization Reversal ◽

Reactive Sputtering ◽

Pulsed Dc

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Magnetic domain structures of Co22Ag78 granular films observed by magnetic force microscopy

Applied Physics Letters ◽

10.1063/1.121393 ◽

1998 ◽

Vol 72 (19) ◽

pp. 2472-2474 ◽

Cited By ~ 35

Author(s):

Y. J. Chen ◽

W. Y. Cheung ◽

I. H. Wilson ◽

N. Ke ◽

S. P. Wong ◽

...

Keyword(s):

Magnetic Force Microscopy ◽

Magnetic Force ◽

Magnetic Domain ◽

Granular Films ◽

Force Microscopy ◽

Domain Structures

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Probing the Nanoscale Heterogeneous Mixing in a High-Performance Polymer Blend

Polymers ◽

10.3390/polym14010192 ◽

2022 ◽

Vol 14 (1) ◽

pp. 192

Author(s):

Alexander Paul Fellows ◽

Debashis Puhan ◽

Janet S. S. Wong ◽

Michael T. L. Casford ◽

Paul B. Davies

Keyword(s):

High Performance ◽

Domain Boundary ◽

Temperature Stability ◽

Chemical Information ◽

High Temperature Stability ◽

Force Microscopy ◽

Domain Structures ◽

Wide Range ◽

Physical Mixing ◽

Cantilever Probes

The blend of polyetheretherketone (PEEK) and polybenzimidazole (PBI) produces a high-performance blend (PPB) that is a potential replacement material in several industries due to its high temperature stability and desirable tribological properties. Understanding the nanoscale structure and interface of the two domains of the blend is critical for elucidating the origin of these desirable properties. Whilst achieving the physical characterisation of the domain structures is relatively uncomplicated, the elucidation of structures at the interface presents a significant experimental challenge. In this work, we combine atomic force microscopy (AFM) with an IR laser (AFM-IR) and thermal cantilever probes (nanoTA) to gain insights into the chemical heterogeneity and extent of mixing within the blend structure for the first time. The AFM-IR and nanoTA measurements show that domains in the blend are compositionally different from those of the pure PEEK and PBI polymers, with significant variations observed in a transition region several microns wide in proximity to domain boundary. This strongly points to physical mixing of the two components on a molecular scale at the interface. The versatility intrinsic to the combined methodology employed in this work provides nano- and microscale chemical information that can be used to understand the link between properties of different length scales across a wide range of materials.

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