A simple method of testing the saturation magnetization of ferrimagnetic substrates

A new simple method of testing the saturation magnetization Msatof ferrimagnetic substrates for microwave application is presented. Saturation magnetization can swiftly be measured with an accuracy better than 10 percent, if the test set has seen previously calibrates my substrates of the same size with known saturation magnetization. The measuring principle and the test set is described.