Title :
Static and dynamic properties of a gadolinium garnet
Author :
Sano, Akihide ; Serra, Antonio
Author_Institution :
Comitato Nazionale per l´´Energia Nucleare, Casaccia, Rome, Italy.
fDate :
12/1/1968 12:00:00 AM
Abstract :
The experimental results are reported for a series of measurements made on a single-crystal gadolinium garnet, with a view to obtaining the characteristics which appeared necessary for the use of garnets as memory elements. In particular, variations in the hysteresis loop as a function of the temperature are discussed in order to obtain the dependence of the rectangularity on the temperature. The rectangularity has been found approximately equal to 1 from 5 to 20°C. The variations in switching time as a function of the amplitude and the rise time of the magnetic excitation field and as a function of the temperature have also been studied. Switching times of 1 μs can easily be obtained. Evidence is also shown of a dependence of the coercive field upon the rise time of the driving signal.
Keywords :
Garnet films/devices; GdIGs; Hysteresis loops; NDRO memories; Garnets; Magnetic field measurement; Magnetic fields; Magnetic hysteresis; Magnetic separation; Magnetic switching; Magnetization; Optical polarization; Photomultipliers; Temperature dependence;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.1968.1066361