Date/Time Date(s) - 22/05/20262:30 pm - 3:30 pm
Categories
Dr. Mirela Dragomir
Assistant Professor
Electronic Ceramics Department, K5
Jožef Stefan Institute
Ljubljana, Slovenia
Abstract:
Systems containing S = 1/2 cations, such as cuprates, have long served as model platforms for exploring quantum phenomena, including superconductivity. In these systems, strong electronic correlations and magnetic exchange interactions give rise to a wide range of emergent properties.
Despite their potential for similarly rich or even more complex behaviour, silver(II)-based analogues remain far less explored. This is mainly due to difficulties in stabilising this cation, which is highly oxidising, easily hydrolysed, and thermally unstable.
Silver(II) fluorides are particularly interesting, as these compounds exhibit strong covalency, significant magnetic superexchange, and low-dimensional magnetic behaviour, making them promising analogues to cuprates.
In this seminar, I will present our recent results on silver(II) fluorides. I will show how mechanochemistry enabled access to new, highly sought-after phases, proposed as direct analogues of charge-doped cuprates, which were previously inaccessible via conventional routes, and discuss their structural and magnetic properties.
Speaker bio:
Dr. Mirela Dragomir is an Assistant Professor at the Jožef Stefan International Postgraduate School and a Research Associate at the Jožef Stefan Institute in Ljubljana, Slovenia. She obtained her PhD in Slovenia and subsequently completed postdoctoral training as a research fellow at McMaster University & Brockhouse Institute for Materials research in the group of Prof. John E. Greedan, where she gained expertise in frustrated magnetism.
She then returned to Slovenia, where she was awarded a Marie Skłodowska-Curie Individual Fellowship to study low-dimensional magnetic materials and co-founded the Extreme Conditions Chemistry Laboratory (ECCL) which focuses on high-pressure research using diamond anvil cells.
Her current research interests include the synthesis and crystal growth of superconductors, highly frustrated magnets, and related strongly correlated electron systems, as well as the study of their structural, electronic, and magnetic properties under high pressure (GPa).