1971/09/01 by A. Globus, P. Duplex, M. Guyot · 6 citations
Engineering · Materials Science · Physics and Astronomy · #Magneto-Optical Properties and Applications #Magnetic Properties and Applications #Magnetic properties of thin films
paper · doi:10.1109/tmag.1971.1067200
It is shown that in YIG the magnetization in low fields is due to the same mechanisms for the whole temperature range to the Curie point. At a given temperature the magnetization curves for different samples can be reduced to a single curve by taking into account the grain size. The interpretation is based on a model proposed earlier by Globus: the value of the reversible magnetization would be determined by the wall bulging, the value of the nonreversible magnetization by the wall displacement inside a spherical grain. For different temperatures a single reduced line is obtained by introducing the saturation magnetization and the effective anisotropy field, which is calculated from the susceptibility measured on a sample with single domain grains. So, it is possible to obtain a single magnetization curve which characterizes the composition.