Application of proton conduction of nickel oxide nanostructures to electrochromic devices

研究了离子导电在电学器件缺陷诱导氧化物薄膜中的应用。首先，利用氢诱导溅射制备的氢化Ta2O5薄膜证明了一种用于全干法电致变色电池的质子导电电解液，尽管纳米结构的NiO薄膜没有表现出任何预期的离子导电性。其次，通过氧空位在Ti02-δ层中的输运，证明了TiO2CoFeB/铁磁CoFeB堆栈的磁各向异性随电压的非挥发性变化。这一结果预示着一种由氧化物离子导电驱动的新型磁性器件的可能发展。

Applications of ionic conduction in defect-induced-oxide thin films for electrical devices were investigated. First, a proton-conducting electrolyte for an all-dry-processed electrochromic cell was demonstrated by using the hydrogenated-Ta2O5 films prepared by hydrogen-introduced sputtering, even though nano-structured NiO thin films did not show any expected ionic conductions. Next, voltage-induced nonvolatile change of magnetic anisotropy was demonstrated for TiO2-δ/ferromagnetic CoFeB stacks, by means of the oxygen vacancy transport in TiO2-δ layer. This result indicates a possible development of a new type of magnetic device driven by ionic conduction in oxides.