Table 3. Magnetic Properties of Cobalt Ferrite NPs Measured at 5 and 300 K: μ₀H_C Coercive Field, R Reduced Remanence, M_5T Specific Saturation Magnetization at 5 T, M_S Extrapolated Saturation Magnetization, K_eff Effective Magnetic Anisotropy, and (BH)_max Room-Temperature Energy Product^a.

samples	5 K					300 K
	μ0HC (T)	R	M5T (Am2 kg–1)	MS (Am2 kg–1)	Keff (MJ m–3)	μ0HC (T)	R	M5T (Am2 kg–1)	(BH)max, 300 K (kJ m–3)
CFO	1.54	0.83	80	84	1.01	0.12	0.34	78	7.2
CFO150	1.83	0.82	79	83	1.23	0.17	0.48	78	8.8
CFO210	2.12	0.84	81	84	1.39	0.19	0.49	79	12.7
CFO270	2.09	0.84	83	86	1.35	0.16	0.48	80	12.0
CFO320	1.96	0.82	79	82	1.28	0.16	0.46	77	10.4
CFO210-oven	1.32	0.83	82	85	0.83	0.11	0.34	79	5.6

^aUncertainties on the last digit are given in parentheses. The errors for M_S, M_5T, and μ₀H_C have been assessed to be the 5 and 2%, respectively, of the experimental values.