Oscillographic ferrometer

An oscillographic ferrometer comprising:

• a magnetizing means producing a magnetic field for placing a test sample thereinto;
• a magnetization measuring channel cooperating with said magnetizing means;
• a magnetizing field measuring channel cooperating with said magnetizing means and effecting together with said magnetization measuring channel the measurements of dynamic magnetization loop parameters of said test sample;
• said magnetizing means including a step-down transformer having a single-turn secondary winding, a single-layer ellipsoidal solenoid connected to said secondary winding and having a constant density of rectangle-shaped turns along the generatrix thereof, said solenoid being adapted for receiving a test sample and having the geometrical dimensions thereof selected in agreement with the following relationship:
• ##EQU9## where K is the contraction coefficient of said solenoid generatrix, 2b.sub.L is the width of the linear rectangular profile representing the geometrical locus of the cross section centers of said solenoid end turns;
• 2a is the height of the linear rectangular profile representing the geometrical locus of the cross section centers of said solenoid end turns,
• 2L is the length of said solenoid between the cross section centers of said end turns.