Magnetic parameters of Co_1−xCu_xFe₂O₄/SiO₂ at room temperature.

Sample	M s (emu g−1)	M r (emu g−1)	H c (Oe)	η obs (μB)	η Neel (μB)	θ YK (degree)
x = 0	24.7	7.6	1525	1.48	3.26	38.6
x = 0.1	34.3	11.1	1430	2.06	3.37	33.6
X = 0.2	30.4	10.8	1405	1.83	3.10	33.1
X = 0.3	27.1	9.35	1265	1.63	2.91	33.4