Transition path to a dense efficient-packed post-delafossite phase. Crystal structure and evolution of the chemical bonding

•Two previously unknown pressure-induced phase transitions have been found in delafossite AgGaO2.•The initial delafossite phase transforms into another rhombohedral structure 8% denser.•Ag coordination changes from linear to octahedral, through a leaning delafossite structure.•The structural sequenc...

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Veröffentlicht in:	Journal of alloys and compounds 2021-06, Vol.867, p.159012, Article 159012
Hauptverfasser:	Chuliá-Jordán, Raquel, Santamaria-Perez, David, Pellicer-Porres, Julio, Otero-de-la-Roza, Alberto, Martinez-Garcia, Domingo, Garcia-Domene, Braulio, Gomis, Oscar, Sans, Juan Angel, Vanaja, K.A., Asha, A.S., Popescu, Catalin
Format:	Artikel
Sprache:	eng
Schlagworte:	AgGaO2 Structure Chemical bonds Coordination Crystal structure Delafossite High-pressure Oxygen atoms Phase transition Phase transitions Polymorphism Structural analysis Synchrotron radiation Synchrotrons
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