a) Draw the hysteresis curves for a hard and a soft magnetic material. Label the axes and describe how you can get information about the saturation magnetisation, remanence and coercivity from the graphs. b) Which of the two materials would you use as a fridge magnet? Motivate your answer.
a) Draw the hysteresis curves for a hard and a soft magnetic material. Label the axes and describe how you can get information about the saturation magnetisation, remanence and coercivity from the graphs. b) Which of the two materials would you use as a fridge magnet? Motivate your answer.
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Transcribed Image Text:a) Draw the hysteresis curves for a hard and a soft magnetic material. Label the axes and describe how you can get information about the saturation magnetisation, remanence
and coercivity from the graphs.
b) Which of the two materials would you use as a fridge magnet? Motivate your answer.
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