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Journals / Turkish Journal of Chemistry / 2018 / Cilt: 42 - Sayı: 5

Phase transition of chemically synthesized FePt nanoparticles under high pressure

Şadan ÖZCAN
Telem ŞİMŞEK
Özgür KARCI
Pages
1217–1223
Publication Date
2022-11-04
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Results show that highpressure annealing lowers the decomposition temperature of the surfactants surrounding nanoparticles and partiallyhinders agglomeration arising from heat treatment.

📌 3 Key Takeaways

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Objective & Hypothesis:We present the results of a study related to phase transformation of chemically synthesized FePt nanoparticlesunder high pressure from face-centered cubic into face-centered tetragonal structure.
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Key Findings & Data:As-synthesized nanoparticles arearound 4.5 nm and show superparamagnetic behavior at 300 K.
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Conclusion & Impact:Results show that highpressure annealing lowers the decomposition temperature of the surfactants surrounding nanoparticles and partiallyhinders agglomeration arising from heat treatment.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

We present the results of a study related to phase transformation of chemically synthesized FePt nanoparticlesunder high pressure from face-centered cubic into face-centered tetragonal structure. As-synthesized nanoparticles arearound 4.5 nm and show superparamagnetic behavior at 300 K. After annealing under 60 bar pressure of hydrogen at400 ◦ C for 2 h, nanoparticles exhibit strong ferromagnetic behavior with 5391 Oe coercivity. Results show that highpressure annealing lowers the decomposition temperature of the surfactants surrounding nanoparticles and partiallyhinders agglomeration arising from heat treatment. The promising ferromagnetic properties of the FePt nanoparticlesafter annealing under high pressure make them suitable for ultrahigh-density memory devices.

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Cite This Article

ÖZCAN, Ş., ŞİMŞEK, T., KARCI, Ö. (2022). Phase transition of chemically synthesized FePt nanoparticles under high pressure. Turkish Journal of Chemistry, Cilt: 42 - Sayı: 5, 1217–1223. https://ajindex.com/articles/601810

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