Magnetic Properties and Metastable States in Spin-Crossover Transition of Co-Fe Prussian Blue Analogues
TLDR
In this article, the magnetic phase transition of Co-Fe PBA was investigated and the degeneracy changes due to charge transfer between Co and Fe atoms accompanying the spin transition was taken into account.Abstract:
The combination of spin transitions and magnetic ordering provides an interesting structure of phase transitions in Prussian blue analogues (PBAs). To understand the structure of stable and metastable states of Co–Fe PBA, it is necessary to clarify free energy as a function of magnetization and the fraction of the high-temperature component. Including the magnetic interaction between high-temperature states, we study the magnetic phase transition of Co–Fe PBA in addition to spin transitions. Here, we take into account the degeneracy changes due to charge transfer between Co and Fe atoms accompanying the spin transition. In this study, the charge transfer between Co and Fe atoms is explicitly taken into account and also the ferrimagnetic structure of Co–Fe PBAs is expressed in the proper way. First, we found systematic changes in the structures of stable and metastable states as functions of system parameters using mean field theory. In particular, the existence of a metastable magnetic-ordered high-temper...read more
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A room-temperature organometallic magnet based on Prussian blue
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Molecules to build solids : high tc molecule-based magnets by design and recent revival of cyano complexes chemistry
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TL;DR: In this article, the use of a localized electron orbital model allowed the authors to push the Curie temperatures from 5.6 K to above room temperature in a vanadium-chromium Prussian blue analogue.