Ahmed, Yusra, Paul, Alison ![]() ![]() ![]() |
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Abstract
Recently discovered barium hexaferrite (BaFe12O19) – based nanoplatelets form a ferromagnetic-ferrofluid which exhibits interesting magnetic properties. Manufacturing the barium hexaferrite nano-platelets via hydrothermal synthesis remains of fundamental interest and allows for optimisation of structural, magnetic, and morphological properties, which impact on ferrofluid properties. This report describes a surfactant assisted manufacturing method for an ethylene glycol based ferrofluid using hexadecyltrimethylammonium bromide (CTAB) with barium hexaferrite nano – platelets. A hexagonal nano – platelet morphology with a typical diameter up to 200 nm and thickness of a few nanometres was observed by Transmission Electron Microscopy (TEM) with stable concentrations between 10 – 200 mg/ml, while saturation magnetisation of dry particles was measured at 32.8 Am2 /kg using a Vibrating Sample Magnetometer (VSM). The manufactured barium hexaferrite - ethylene glycol ferrofluid exhibits improved thermal properties compared to previously used butanol based ferrofluids opening the way into new applications in the field of colloidal suspensions
Item Type: | Article |
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Date Type: | Publication |
Status: | Published |
Schools: | Chemistry Engineering |
Subjects: | Q Science > QD Chemistry |
Publisher: | Royal Society of Chemistry |
ISSN: | 2050-7526 |
Funders: | Royal Academy of Engineering, Slovenian Research Agency |
Date of First Compliant Deposit: | 16 January 2024 |
Date of Acceptance: | 3 November 2023 |
Last Modified: | 30 Jun 2024 23:21 |
URI: | https://orca.cardiff.ac.uk/id/eprint/163672 |
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