[14p-419-1~16] 6.3 Oxide electronics

△ [14p-419-8] Giant Inductance in Nonlinear Conductor

〇Kenji Tanabe¹, Hiroki Taniguchi¹, Fumihiko Nakamura², Ichiro Terasaki¹ (1.Nagoya Univ., 2.Kurume Inst. of Tech.)

Keywords:functional materials, inductor, oxides

The inductor, resistor, and capacitor are essential passive elements in electronics. The inductor, however, has progressed little since its inception more than one hundred years ago—in particular, it still requires a relatively large volume. Therefore, a breakthrough allowing the replacement of coil-type inductors is much needed to develop a nano-meter scale inductor. Here, we propose a novel method of inducing inductance in a nonlinear conductor. As the voltage is applied to the nonlinear conductor, a decrease in the resistance and an increase in the current are slightly delayed, which reveals the inductance is induced. To archive our novel inductor, we measured the electrical responses in Ca₂RuO₄, which shows a nonlinear conduction in a relatively low electric field. Accordingly, the giant inductance of 38 H and the quality factor that exceeds 20 are observed in Ca₂RuO₄ at 1 Hz. Our inductor, therefore, displays ideal characteristics such as large inductance, high quality factor, and superb miniaturizability, and may thus be a prime candidate for next-generation inductors.