Negative differential resistance: Another banana?
1 State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology - Wuhan, 430070, China
2 Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Guilin University of Technology - Guilin, 541004, China
3 China Building Materials Academy - Beijing, 100024, China
Received: 6 October 2014
Accepted: 6 October 2014
Just like the artefact found in ferroelectric hysteresis loops, the nearly identical NDR effect shown in Sr3Co2Fe24O41, TiO2, Al2O3, glass and even banana skins is confirmed to be a kind of water behavior. The combination of water-induced tunneling effect, water decomposition and absorption plays a crucial role in the NDR effect. The results and mechanism demonstrated here illustrate that much attention should be paid to the chemical environment when studying electrical properties of materials/devices.
PACS: 77.22.Jp – Dielectric breakdown and space-charge effects / 72.20.-i – Conductivity phenomena in semiconductors and insulators / 75.85.+t – Magnetoelectric effects, multiferroics
© EPLA, 2014