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A Das  A Bajpai  A Banerjee  R Srinivasan 《Pramana》1994,43(3):211-217
The real (χ′ n) and imaginary (χ″ n) parts of even harmonic susceptibility (n⩽6) are measured as a function of external DC field (H dc) in the field increasing (H↑) and decreasing (H↑) cycle. Hysteresis is observed betweenH↑ andH↓ cycles. In theH↓ cycle, at a field,H comp=4·2G, bothχ′ andχ″ of all the even harmonics vanish indicating a true cancellation of fields in the intergrain region (H eff≈0) caused by the balance betweenH dc and the remanent magnetization of the grains. The position of the extrema and the zero of the various harmonics undergo a shift proportional to the remanent magnetization of the grains at that particular field.  相似文献
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