What is it about?
Magnetic hysteresis is essential for all magnetic data storage. In this paper we explore the structure of a molecular material over the full width of its hysteresis. The results reveal that a change in the conformation of the anion is key to the hysteresis and that this effect is reversible over 2 cycles.
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Why is it important?
Switchable molecular materials are important for the development of molecular electronics. However, a clear understanding of how the structure changes throughout its hysteresis loop has been lacking. Two key findings are 1) the anion conformational change is fully reversible and responsible for the observed hysteresis and 2) pronounced scissoring of the molecules upon the second cooling.
Perspectives
Structural studies of spin crossover materials are often simple and a detailed understanding the structure-function relationships are often lacking. We hope that this work will inspire others to explore their systems in similar detail and drive the field towards it's ultimate goal of use in molecular electronics.
Dr David J. Harding
Suranaree University of Technology
Read the Original
This page is a summary of: The structural origin of magnetic hysteresis in an iron(III) spin crossover material, Crystal Growth & Design, September 2020, American Chemical Society (ACS),
DOI: 10.1021/acs.cgd.0c01073.
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