Staircase effect in field-induced metamagnetic transitions in La0·9Ce0·1Fe12B6
Résumé
We report on peculiar magnetic-field-induced metamagnetic transitions in the antiferromagnetic itinerant-electron compound La0.9Ce0.1Fe12B6. Below 8 K, the first magnetization curves display multiple steep jumps generating a staircase-like shape. Whereas the magnetization of La0.9Ce0.1Fe12B6 varies smoothly with the external applied magnetic field at T ≥ 8 K. We further show that this staircase effect is extremely sensitive to the thermomagnetic history of the sample.
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