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Magnetic oxygen stored in quasi-1D form within BaAl2O4 lattice

2019; Nature Portfolio; Volume: 9; Issue: 1 Linguagem: Inglês

10.1038/s41598-019-51653-4

2045-2322

Martina Vrankić, Ankica Šarić, Sanja Bosnar, Damir Pajić, Jure Dragović, Angela Altomare, Aurelia Falcicchio, Jasminka Popović, Marijana Jurić, M. Petravić, Ivana Jelovica Badovinac, Goran Dražič,

Electronic and Structural Properties of Oxides

Abstract Inorganic materials that enable a link between the storage and release of molecular oxygen offer a fertile ground in continuous quest for the applications that can potentially reduce energy consumption and thus minimize adverse effects on the environment. Herein, we address reversible intake/release of an oxygen within the BaAl 2 O 4 material as evidenced by unexpected magnetic ordering. Magnetic measurements unveil that an oxygen is stored in the form of condensed matter, creating a kind of low dimensional, chain-like assembly within the tunnels of BaAl 2 O 4 structure. We demonstrate that oxygen is adsorbed simply by staying in air, at ambient conditions, and released relatively quickly by staying in the He or other gas atmosphere of several millibars pressure even at 300 K.