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Low field driven latching-type magneto-optical display
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View: Figures


Image of FIG. 1.
FIG. 1.

(Color online) Hysteresis Faraday rotation vs magnetic field loops recorded in pulsed magnetometer (rising time of , maximum magnetic field of ) at in magnetic field perpendicular to the plane of the films. A scaling factor of 0.5 was introduced to plot data for homogeneous thick film notified as . The inset in the upper panel presents paramagnetic traces for and 2:2 crystals fitted to the Brillouin function (solid lines). The inset in the lower panel shows loops for sample recorded in quasistatic regime and at sweeping rate as all other plots in the figure.

Image of FIG. 2.
FIG. 2.

(Color online) Transmission and Faraday rotation spectra for multilayers with the same integral thickness of BIG layers (1200 BIG unit cells, ). The intensity of transmitted light was normalized to the intensity of the light passed through the blank substrate. Graphs for the reference thick sample (1:0) have been scaled with a factor of 0.55.

Image of FIG. 3.
FIG. 3.

(Color online) Magneto-optical figure of merit 2 calculated using the experimental data from Fig. 2. Strong enhancement of MO properties is clearly seen in series compared to the reference film of the same effective thickness of MO active material.

Image of FIG. 4.
FIG. 4.

Magnetic domain structure in the thick film (900 BIG unit cells). The inset shows MO imprint stored in the film brought to the contact with a magnetic bar code in KTH pass card.

Image of FIG. 5.
FIG. 5.

(Color online) Faraday rotation time domain response on pulse of current fed into the current loop shown in the inset. Before switching, the test thick film has been demagnetized. The upper and middle current loops have been exposed to the opposite sign current pulses, whereas the lower loop (with dimensions shown) has not been powered.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Low field driven latching-type Bi3Fe5O12∕Gd3Ga5O12 magneto-optical display