Table 2.

Specific Cotton–Mouton constant, optical polarizability anisotropy, magnetic susceptibility anisotropy, magnetic moment, loading factor, and volume density of akaganeite nanoparticles and HSF, with error in parentheses

Property	Fe-sucrose	Fe-polymaltose	Fe-dextran	Fe-dextran (S)	Ferritin
C CMSp (10−14 mA−2 Lg−1)	203 (3)	24.4 (0.5)	55.1 (1.4)	0.62 (0.02)	8.1 (0.4)e
Δα (10−40 Cm2 V−1)a	10 (3)	80.1	45.3	282	5f
Δχ (10−20 JT−2)	−6.1/6.4 (0.6)d	–	−4.6/4.8d	−4.07 × 10−2/4.24 × 10−2d	3.8f
μ m (μ B)	2,157/239d	–	1,636/181d	164/18d	(128–556)g
LFb	337	2,700	1,560	9,540	1,600
ρ N(1021 m−3)c	30.4	3.8	6.6	1.07	~6

^aThe product ΔαΔχ for iron sucrose is negative; the sign of Δα was chosen arbitrarily

^bCalculated for core diameter as in Table 1 (TEM)

^cFor c ^Fe = 1 g/L

^dFor the second method of linearization, see text

^eSpecific Cotton–Mouton constant for apoferritin and ferritin with LF = 2200 is equal to C ^CM_sp = (0.018 ± 0.004) × 10⁻¹⁴ mA⁻² and C ^CM_sp = (6.97 ± 0.30) × 10⁻¹⁴ mA⁻², respectively

^fData estimated from (Pankowska and Dobek 2009)

^gEstimated from low-temperature magnetization measurements (Brem et al. 2006)