Fig. 2: Temperature dependent molar susceptibility χmol of Ca4FeN4.

Zero-field cooled and field cooled data are shown. The Curie–Weiss fit was performed for the temperature range of 80 to 300 K. The inset shows that inverse molar susceptibility χmol−1 varies linearly above 75 K, highlighting that a single dominant Curie–Weiss paramagnetic phase is present.