Insights into 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>ε</mml:mi><mml:mtext>−</mml:mtext><mml:msub><mml:mrow><mml:mi>Fe</mml:mi></mml:mrow><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mrow><mml:mi mathvariant="normal">O</mml:mi></mml:mrow><mml:mn>3</mml:mn></mml:msub></mml:math>
 interactions via Cr doping

Nickel, Rachel; Sun, Chengjun; Meira, Debora Motta; Shafer, Padraic; van Lierop, Johan

doi:10.1103/physrevmaterials.8.024407

Phys. Rev. Materials

2024

DOI: 10.1103/physrevmaterials.8.024407

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Insights into ε−Fe2O3 interactions via Cr doping

Rachel Nickel,

Chengjun Sun,

Debora Motta Meira

et al.

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2024

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Formation of the hard-magnetic epsilon iron oxide phase from akaganéite nanoparticles

Joseph,

Gopi,

Ullrich

et al. 2024

Nanotechnology

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Elongated akaganéite (β-FeOOH) nanoparticles were prepared by a forced hydrolysis route using FeCl3 ·6H2O employing various urea concentrations. β-FeOOH nanoparticles stabilized within the SiO2 matrix were annealed at different temperatures, ranging from 500 °C to 1300 °C. It was observed that β-FeOOH underwent a temperature-induced conversion to γ-Fe2O3 and subsequently to ϵ-Fe2O3. Due to the ϵ-Fe2O3 phase formation, the coercivity rapidly increased to 16 kOe for samples annealed at 900 °C and reached values up to 21.5 kOe when annealed at 1200 °C. At a higher temperature of 1300 °C, the ϵ-Fe2O3 phase transforms mainly into the α-Fe2O3 phase, which causes the coercivity to rapidly drop to negligible values.

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Formation of the hard-magnetic epsilon iron oxide phase from akaganéite nanoparticles

Joseph,

Gopi,

Ullrich

et al. 2024

Nanotechnology

View full text Add to dashboard Cite

show abstract

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Insights into ε−Fe2O3 interactions via Cr doping

Cited by 1 publication

References 34 publications

Formation of the hard-magnetic epsilon iron oxide phase from akaganéite nanoparticles

Formation of the hard-magnetic epsilon iron oxide phase from akaganéite nanoparticles

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