- Tytuł:
- High-Pressure EPR Study of Spin Molecular Bistability in $Li[Fe(Th-5Cl-Sa)_2]$
- Autorzy:
- Krupska, A.
- Powiązania:
- https://bibliotekanauki.pl/articles/1205442.pdf
- Data publikacji:
- 2014-08
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
75.30.Wx
33.35.+r
75.50.Bb - Opis:
- The spin transitions in $Li[Fe(Th-5Cl-Sa)_2]$ were studied by EPR under hydrostatic pressure in the temperature range 80-332 K. The structural changes in the complex anion induced by the pressure above 350 MPa (when LS-2 phase appears) are observed, which are manifested in abrupt changes in $g_{⊥}$ factor and linewidth $ΔB_{⊥}$ of the low-spin phase LS. It is also manifested in the change in the shape of EPR spectrum. The high-spin $↔$ low-spin transition $HS ↔ LS$ shows hysteresis whose width is constant up to about 265 K and then rapidly increases. The spin phase diagram studied shows a large similarity to the phase diagram of $(2Me-5Et-PyH)[Fe(Th-5Cl-Sa)_2]$, which means that characteristics of the transition depend mainly on complex anion, not on cation. The hysteresis indicates on a cooperative character of the spin transition and on grouping of the complexes in domains.
- Źródło:
-
Acta Physica Polonica A; 2014, 126, 3; 790-794
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki