Fig. 8 | Scientific Reports

Fig. 8

From: Magnetization and superparamagnetic behavior of FeCu nanoalloys at room temperature via synthesis and simulation

Fig. 8

The magnified magnetization spectrum (Fig. 6) provides detailed insights into the magnetic behavior near zero external fields. The blue arrow indicates the external field (approximately  -3 Tesla) where zero magnetization is observed for all NPs studied. Similarly, the red arrow highlights the zero magnetization point (achieved at -1 Tesla) in the CS(25,30) NP. For this NP specifically, additional simulated data points closer to zero external fields were incorporated to refine the spectrum, providing a basis for identifying true superparamagnetic NPs through spin-lattice simulation. Lines and broken lines facilitate trend analysis.

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