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Polymorphism dependent light induced spin transition.

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  • 1Department of Inorganic Chemistry (FCHPT), Slovak University of Technology, Bratislava 81237, Slovakia. ivan.salitros@stuba.sk.

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Summary
This summary is machine-generated.

Photomagnetic studies reveal distinct properties of low spin polymorphs in [Fe(L)2](BF4)2. Researchers observed reversible spin transitions between low and high spin states in orthorhombic phases.

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Area of Science:

  • Materials Science
  • Solid-State Chemistry
  • Photochemistry

Background:

  • Orthorhombic and tetragonal low spin polymorphs of [Fe(L)2](BF4)2 exhibit unique electronic and magnetic properties.
  • Understanding the behavior of metastable high spin states is crucial for developing novel materials.

Purpose of the Study:

  • To investigate the photomagnetic properties of orthorhombic and tetragonal low spin polymorphs of [Fe(L)2](BF4)2.
  • To characterize the thermal stability of their metastable high spin states.
  • To study the reversible thermally induced phase/spin transition between low spin and high spin orthorhombic phases.

Main Methods:

  • Photomagnetic studies were employed to examine the spin states.
  • Variable temperature UV/VIS spectroscopy was utilized to monitor phase transitions.

Main Results:

  • Different properties and thermal stability were observed for the metastable high spin states of the orthorhombic and tetragonal polymorphs.
  • A reversible thermally induced phase/spin transition between low spin and high spin orthorhombic phases was successfully studied.

Conclusions:

  • The study highlights the distinct photomagnetic behaviors of different polymorphs.
  • The reversible spin transition in orthorhombic phases offers potential for switchable materials.