Influence of the agglomeration in the initial suspension (ferrofluid) on the oriented magnetic structure

Kolev, Svetoslav; Koutzarova, T.

doi:10.1088/1742-6596/514/1/012021

J. Phys.: Conf. Ser.

2014

DOI: 10.1088/1742-6596/514/1/012021

|View full text |Cite

Influence of the agglomeration in the initial suspension (ferrofluid) on the oriented magnetic structure

Svetoslav Kolev¹,

T. Koutzarova

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2014

2018

Publication Types

Select...

Article2

Relationship

Self Cite0

Independent2

Authors

Journals

Cited by 2 publications

(1 citation statement)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…15 In addition the colloids are ready for common film deposition by electrophoresis or magnetic field gradient. 18,19 Because hexaferrite nanoparticles are well suited for high-density information storage tape systems, 3,20 our stable colloids of well-dispersed high-quality particles could lead to better performance media.…”

mentioning

confidence: 99%

Stable colloidal solutions of strontium hexaferrite hard magnetic nanoparticles

et al. 2014

View full text Add to dashboard Cite

show abstract

mentioning

confidence: 99%

Stable colloidal solutions of strontium hexaferrite hard magnetic nanoparticles

et al. 2014

View full text Add to dashboard Cite

show abstract

Rotational dynamics of colloidal hexaferrite nanoplates

Eliseev

Trusov

Chumakov

et al. 2018

Applied Physics Letters

View full text Add to dashboard Cite

Here, we report an experimental study on the rotational dynamics of hard magnetic hexaferrite nanoparticles in water. A stable aqueous colloid of SrFe12O19 was synthesized by the borate glass-ceramic dissolution technique and studied by TEM, small-angle X-ray scattering (SAXS), magnetometry, and optical transmission methods in applied DC and AC magnetic fields. The particles represent nanoplates with a mean diameter of 50 nm and a mean thickness of 5 nm having a coercive force of 4700 Oe and a saturation magnetization of 51.5 emu/g. According to magnetic field dependent SAXS data, a probability orientation function was suggested considering the colloidal particle rotation in the applied field as an activation-free process. The magnetization dynamics of the colloidal rotators was described by an interplay of magnetic torque and drag force in the frame of a non-interacting particle model. At frequencies below 100 Hz, the particles are able to fully rotate after the magnetic field. At higher frequencies, the complete following becomes impossible due to the energy dissipation and the particle movement changes to oscillations around randomly oriented axes. These vibrational axes can be aligned by a strong external permanent magnetic field, causing the coherent particle oscillations and correspondingly the rise of the high-frequency response of the colloid optical transmission. As a result, the efficient magneto-optical light modulation has been achieved at frequencies exceeding 5 kHz, revealing the fastest response rates among known colloidal magneto-optical media.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Influence of the agglomeration in the initial suspension (ferrofluid) on the oriented magnetic structure

Cited by 2 publications

References 10 publications

Stable colloidal solutions of strontium hexaferrite hard magnetic nanoparticles

Stable colloidal solutions of strontium hexaferrite hard magnetic nanoparticles

Rotational dynamics of colloidal hexaferrite nanoplates

Contact Info

Product

Resources

About