A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Thermally Reentrant Crystalline Phase Change in Perovskite‐Derivative Nickelate Enabling Reversible Switching of Room‐Temperature Electrical Resistivity
Reversible switching of room‐temperature electrical resistivity due to crystal‐amorphous transition is demonstrated in various chalcogenides for development of non‐volatile phase change memory. However, such reversible thermal switching of room‐temperature electrical resistivity has not reported in transition metal oxides so far, despite their enormous studies on the electrical conduction like metal‐insulator transition and colossal magnetoresistance effect. In this study, a thermally reversible switching of room‐temperature electrical resistivity is reported with gigantic variation in a layered nickelate Sr2.5Bi0.5NiO5 (1201‐SBNO) composed of (Sr1.5Bi0.5)O2 rock‐salt and SrNiO3 perovskite layers via unique crystalline phase changes between the conducting 1201‐SBNO with ordered (O‐1201), disordered Sr/Bi arrangements in the (Sr1.5Bi0.5)O2 layer (D‐1201), and insulating oxygen‐deficient double perovskite Sr2BiNiO4.5 (d‐perovskite). The O‐1201 is reentrant by high‐temperature annealing of ≈1000 °C through crystalline phase change into the D‐1201 and d‐perovskite, resulting in the thermally reversible switching of room‐temperature electrical resistivity with 102‐ and 109‐fold variation, respectively. The 1201‐SBNO is the first oxide to show the thermally reversible switching of room‐temperature electrical resistivity via the crystalline phase changes, providing a new perspective on the electrical conduction for transition metal oxides.
Thermally Reentrant Crystalline Phase Change in Perovskite‐Derivative Nickelate Enabling Reversible Switching of Room‐Temperature Electrical Resistivity
Reversible switching of room‐temperature electrical resistivity due to crystal‐amorphous transition is demonstrated in various chalcogenides for development of non‐volatile phase change memory. However, such reversible thermal switching of room‐temperature electrical resistivity has not reported in transition metal oxides so far, despite their enormous studies on the electrical conduction like metal‐insulator transition and colossal magnetoresistance effect. In this study, a thermally reversible switching of room‐temperature electrical resistivity is reported with gigantic variation in a layered nickelate Sr2.5Bi0.5NiO5 (1201‐SBNO) composed of (Sr1.5Bi0.5)O2 rock‐salt and SrNiO3 perovskite layers via unique crystalline phase changes between the conducting 1201‐SBNO with ordered (O‐1201), disordered Sr/Bi arrangements in the (Sr1.5Bi0.5)O2 layer (D‐1201), and insulating oxygen‐deficient double perovskite Sr2BiNiO4.5 (d‐perovskite). The O‐1201 is reentrant by high‐temperature annealing of ≈1000 °C through crystalline phase change into the D‐1201 and d‐perovskite, resulting in the thermally reversible switching of room‐temperature electrical resistivity with 102‐ and 109‐fold variation, respectively. The 1201‐SBNO is the first oxide to show the thermally reversible switching of room‐temperature electrical resistivity via the crystalline phase changes, providing a new perspective on the electrical conduction for transition metal oxides.
Thermally Reentrant Crystalline Phase Change in Perovskite‐Derivative Nickelate Enabling Reversible Switching of Room‐Temperature Electrical Resistivity
Matsumoto, Kota (author) / Kawasoko, Hideyuki (author) / Nishibori, Eiji (author) / Fukumura, Tomoteru (author)
Advanced Science ; 10
2023-11-01
7 pages
Article (Journal)
Electronic Resource
English
| British Library Online Contents | 2006
Reversible switching in phase-change materials
| British Library Online Contents | 2008
| European Patent Office | 2024
Thermally stimulated current and electrical resistivity in CuIn3Se5
| British Library Online Contents | 2004
High-temperature electrical resistivity and heat capacity studies on nano-crystalline geikielite
| British Library Online Contents | 2007