English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Effects of substitution of Pt by Cu on the structural and morphological changes of Fe-Pt nanoparticles with chemical homogeneity and mono-dispersion, which were synthesized by the reverse micelle method, have been investigated by in-situ electron diffraction and HREM observation. In the Fe-Pt particles, initially with a chemically disordered face-centered cubic phase (Al), the phase transformation from Al to a chemically ordered face-centered tetragonal phase (L1 0 ) took place between 650 and 680°C. Polycrystalline Fe-Pt particles were reconstructed into Al single crystals between 550 and 650°C, followed by phase transformation from Al to L1 0 . The coalescence began almost concurrently with the phase transformation, i.e., between 650 and 680°C. Then, they turned to round-shaped single crystalline particles between 680 and 720°C. In the Fe(Pt,Cu) particles, the phase transformation from Al to L1 0 occurred between 550 and 600°C. Same processes, that is, the reconstruction to single crystals, the phase transformation from Al to L1 0 , the coalescence and the round-shaped particle formation were also observed in the Fe(Pt,Cu) nanoparticles. The temperatures, at which these processes took place, were substantially lower than those for the Fe-Pt nanoparticles.

materials transactions

Effect of Pt Substitution by Cu on Structural and Morphological Changes in Fe-Pt Nanoparticles during Annealing as Studied by &lt;I&gt;In-situ&lt;/I&gt; Transmission Electron Microscopy