An enhancement in the power-conversion-efficiency (η) of a magneto-electric (ME) gyrator has been found by the use of Mn-substituted nickel zinc ferrite. A trilayer gyrator of Mn-doped Ni0.8Zn0.2Fe2O3 and Pb(Zr,Ti)O3 has η = 85% at low power conditions (∼20 mW/in3) and η ≥ 80% at high power conditions (∼5 W/in3). It works close to fundamental electromechanical resonance in both direct and converse modes. The value of η is by far the highest reported so far, which is due to the high mechanical quality factor (Qm) of the magnetostrictive ferrite. Such highly efficient ME gyrators with a significant power density could become important elements in power electronics, potentially replacing electromagnetic and piezoelectric transformers.

中文翻译：

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高效固态磁电回转器

通过使用 Mn 取代的镍锌铁氧体，已经发现磁电 (ME) 回转器的功率转换效率 (η) 有所提高。Mn 掺杂的 Ni0.8Zn0.2Fe2O3 和 Pb(Zr,Ti)O3 的三层回转器在低功率条件下 (~20 mW/in3) η = 85%，在高功率条件下 (~5 W/in3) η ≥ 80%在3）。它在正向和反向模式下都接近基本机电共振。η 的值是迄今为止报道的最高值，这是由于磁致伸缩铁氧体的高机械品质因数 (Qm)。这种具有显着功率密度的高效 ME 回转器可能成为电力电子领域的重要元件，有可能取代电磁和压电变压器。