Self-assembled ferrite nanodots on multifunctional Au nanoparticles

Yasukawa, Yukiko; Liu, Xiaoxi; Morisako, Akimitsu

doi:10.1007/s13404-013-0092-y

Cited by 4 publications

(3 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1,2 In these studies, we attempted to precisely control the material structures to optimize the physical properties of the materials. [3][4][5][6] In this study, we report the dynamic magnetic properties of the materials in the GHzfrequency region induced by the interaction between magnetism of the materials and irradiated electromagnetic waves. High artificial control of the material structures is also discussed in this paper.…”

Section: Introductionmentioning

confidence: 99%

Creation of Materials Based on Novel Principles Utilizing an Interaction between Magnetism and Electromagnetic Waves —Dynamic Permeability of Magnetoplumbite-structured Ferrite with an In-plane Magnetic Anisotropy Through the Controlled-particle Orientations—

Yasukawa

Takahashi

2020

Electrochemistry

Self Cite

View full text Add to dashboard Cite

We prepared a high-quality magnetic BaCoTiFe 10 O 19 ferrite-based composite sheet and BaCoTiFe 10 O 19 thin films exhibiting in-plane magnetic anisotropy. In-plane magnetic anisotropy was realized by controlling particle orientation to achieve high-resonance frequency values. The dynamic permeability of the samples in the GHz-frequency region was evaluated by the short-circuited microstripline method up to 30 GHz. Controlling the propagation of electromagnetic waves with GHz frequencies is extremely difficult. Nevertheless, the ferromagnetic resonance phenomena were observed, and the obtained sheet showed a resonance frequency value of approximately 4 GHz. However, the intrinsic ferromagnetic resonance behaviors were not elucidated for the thin films. The obtained BaCoTiFe 10 O 19 powder/ polymer composite sheet and BaCoTiFe 10 O 19 thin films may have the potential for use at GHz frequencies and as anisotropicelectromagnetic wave suppression materials.

show abstract

Section: Introductionmentioning

confidence: 99%

Creation of Materials Based on Novel Principles Utilizing an Interaction between Magnetism and Electromagnetic Waves —Dynamic Permeability of Magnetoplumbite-structured Ferrite with an In-plane Magnetic Anisotropy Through the Controlled-particle Orientations—

Yasukawa

Takahashi

2020

Electrochemistry

Self Cite

View full text Add to dashboard Cite

show abstract

“…On the basis of these backgrounds, we attempted Auassisted crystallization to fabricate crystalline, ferrite nanostructural SrFe 12 O 19 nanodots using Au nanotemplates [41][42][43][44]. We have successfully obtained crystalline SrFe 12 O 19 nanodots at ∼475 °C, which is much lower than the usual processing conditions (∼525 °C) [43].…”

Section: Introductionmentioning

confidence: 99%

“…These results clearly show that Au-assisted crystallization is an effective process for fabricating SrFe 12 O 19 nanodots at a much lower temperature. Tunability and uniformity of shape, size, and spacing between the SrFe 12 O 19 nanodots, however, were not sufficient [43,44]. These drawbacks relate to poor control over the Au nanostructures used as nanotemplates.…”

Section: Introductionmentioning

confidence: 99%

Control of the spatial distribution and crystal orientation of self-organized Au nanoparticles

et al. 2016

Self Cite

View full text Add to dashboard Cite

Ordered, two-dimensional, self-organized Au nanoparticles were fabricated using radiofrequency (RF) magnetron sputtering. The particles were uniformly spherical in shape and ultrafine in size (3-7 nm) and showed an ultrahigh density in the order of ∼10(12) inch(-2). A custom-developed sputtering apparatus that employs low sputtering power density and a minimized sputtering time (1 min) was used to markedly simplify the preparation conditions for Au nanoparticle fabrication. The spatial distribution of Au nanoparticles was rigorously controlled by placing a Ta interfacial layer between the Au nanoparticles and substrate as well as by post-annealing samples in an Ar atmosphere after the formation of Au nanoparticles. The interfacial layer and the post-annealing step caused approximately 40% of the Au nanoparticles on the substrate surface to orient in the (111) direction. This method was shown to produce ultrafine Au nanoparticles showing an ultrahigh surface density. The crystal orientation of the nanoparticles can be precisely controlled with respect to the substrate surface. Therefore, this technique promises to deliver tunable nanostructures for applications in the field of high-performance electronic devices.

show abstract

Inter-grain effects on the magnetism of M-type strontium ferrite

Céspedes

Rodríguez-Rodríguez

Navío

et al. 2017

Journal of Alloys and Compounds

View full text Add to dashboard Cite

Self-assembled ferrite nanodots on multifunctional Au nanoparticles

Abstract: The fabrication of magnetic oxide nanodots was studied without the use of conventional lithographic techniques and patterning masks.

Cited by 4 publications

References 23 publications

Creation of Materials Based on Novel Principles Utilizing an Interaction between Magnetism and Electromagnetic Waves —Dynamic Permeability of Magnetoplumbite-structured Ferrite with an In-plane Magnetic Anisotropy Through the Controlled-particle Orientations—

Creation of Materials Based on Novel Principles Utilizing an Interaction between Magnetism and Electromagnetic Waves —Dynamic Permeability of Magnetoplumbite-structured Ferrite with an In-plane Magnetic Anisotropy Through the Controlled-particle Orientations—

Control of the spatial distribution and crystal orientation of self-organized Au nanoparticles

Inter-grain effects on the magnetism of M-type strontium ferrite

Contact Info

Product

Resources

About