Issue 23, 2022

Dynamic shock wave driven simultaneous crystallographic and molecular switching between α-Fe2O3 and Fe3O4 nanoparticles – a new finding

Abstract

Switchable nanostructured materials with a low-cost and fast processing have diverse practical applications in the modern electronic industries, but such materials are highly scarce. Hence, there is a great demand for identifying the externally stimulated solid-state switchable phase transition materials for several industrial applications. In this paper, we present the experimentally observed solid-state molecular level switchable phase transitions of nanocrystalline iron oxide materials: {α-Fe2O3 (R-3c) to Fe3O4 (Fd-3m) and Fe3O4 (Fd-3m) to α-Fe2O3 (R-3c)} under dynamic shock wave loaded conditions, and the results were evaluated by diffraction, and vibrational and optical spectroscopic techniques. To date, this is most probably the first report which demonstrates the simultaneous molecular and crystallographic switchable-phase-transitions enforced by dynamic shock waves such that the title material is proposed for sensors and molecular switching applications.

Graphical abstract: Dynamic shock wave driven simultaneous crystallographic and molecular switching between α-Fe2O3 and Fe3O4 nanoparticles – a new finding

Supplementary files

Article information

Article type
Paper
Submitted
09 Apr 2022
Accepted
12 May 2022
First published
12 May 2022

Dalton Trans., 2022,51, 9159-9166

Dynamic shock wave driven simultaneous crystallographic and molecular switching between α-Fe2O3 and Fe3O4 nanoparticles – a new finding

A. Sivakumar, A. Rita, S. Sahaya Jude Dhas, K. P. J. Reddy, R. S. Kumar, A. I. Almansour, S. Chakraborty, K. Moovendaran, J. Sridhar and S. A. Martin Britto Dhas, Dalton Trans., 2022, 51, 9159 DOI: 10.1039/D2DT01101H

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