Table 1 Magnetic information for NiFe2O4 via site-specific EMCD compared with that obtained from other techniques.

From: Quantitative experimental determination of site-specific magnetic structures by transmitted electrons

 

EMCD

XMCD

Calculation

Neutron diffraction

Macro-measure

mL/mS (oct Fe)

0.01±0.02

    

mL/mS (tet Fe)

0.06±0.02

    

mL/mS, (oct Ni)

0.24±0.02

0.135±0.03520 (ref.20), 0.17±0.05520 (ref.20)

   

M oct,Fe

3.5±0.6

 

3.7028 (ref.28), 4.129 (ref.29), 4.11*

4.7332 (ref.32)

 

M tet,Fe

−2.9±0.3

 

−3.2428 (ref.28), −4.129 (ref.29), −4.00*

−4.8632 (ref.32)

 

M oct,Ni

1.7±0.2

 

1.3828 (ref.28), 2.229 (ref.29), 1.58*

2.2232 (ref.32)

 

M oct,Ni /M oct,Fe

0.49±0.04

 

0.3728 (ref.28), 0.5429 (ref.29), 0.38*

0.4616 (ref.16)

 

Mtot for NiFe2O4

2.3±0.9

 

1.7428 (ref.28), 2.229 (ref.29), 2.0*

2.132 (ref.32)

2.330 (ref.30)

  1. EMCD, energy-loss magnetic chiral dichroism; XMCD, X-ray magnetic circular dichroism. mL/mS refers to the orbital to spin magnetic moment ratio. Moct,Fe, Mtet,Fe and Moct,Ni are the total magnetic moments (the sum of spin and orbital magnetic moments) of oct Fe, tet Fe and oct Ni in the units of μB per atom. Mtot for NiFe2O4 are the total magnetic moments for NiFe2O4 in a unit cell. In the column of ‘calculation’, the total magnetic moments from 29 were calculated from the spin magnetic moments and orbital magnetic moments mentioned in 29, and according to its context, almost all orbital magnetic moments are attributed to Ni2+. ‘Calculation’ means the ‘first principle calculation’, in which column the data with asterisks (*) are the results obtained by ourselves through density functional theory calculations. ‘Macro-measure’ refers to the macroscopic-measured saturation magnetic moments by the pondermotor method30.
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