Magneto-optics of ferrites

New Magneto‐Optical Film of Ce,Ga:GIG with High Performance

“…Based on the Tanabe–Sugano diagram of Fe 3+ ion in iron garnet, the MCD peaks of Ce:GIG film at 685, 587, 522, and 486 nm are mainly contributed to the 6 A 1 g ( 6 S )→ 4 T 2 g ( 4 G ), 6 A 1 ( 6 S )→ 4 T 1 ( 4 G ), 4 T 2 ( 4 G ), and 4 E ; 4 A 1 ( 4 G ) transitions, respectively . It can be seen that the MCD peaks of Ce,Ga:GIG film (besides the 6 A 1 ( 6 S )→ 4 E ; 4 A 1 ( 4 G ) transitions) occurred red shift, which show the crystal‐field environment of Fe 3+ ion being stronger after Ga 3+ doping …”

Magnetic Microscopy of Layered Structures

“…The subscription represents the three cubic axes and m i are the components of the magnetization vector m. The number of independent components of the linear magneto-optic K -tensor and the quadratic G-tensor can be reduced to a few material parameters by symmetry considerations [171]. For cubic crystals, 9 the magneto-optic tensor then writes…”

“…n i = 1 in the Fresnel formula) [171]: Outside the sample these are also possible modes, so that the reflection coefficients can be simply calculated by applying the usual Fresnel relations (2.52) for normal light incidence to each of the circular components (and assuming air as the incident medium, i.e.…”

“…if n ≈ n ), also the real and imaginary parts of the components of the magneto-optical ε-tensor are mixed and the total magneto-optical signal emerging from the sample gets highly complicated [171]. If, in addition, the magnetic medium is strongly absorbing (i.e.…”

“…The major axis of the ellipse is thus rotated by the angle Re(θ c F ), which can be written as [170,171] …”