1887
banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
First glimpse of the soft x-ray induced excited spin-state trapping effect dynamics on spin cross-over molecules
Rent:
Rent this article for
USD
10.1063/1.4818603
/content/aip/journal/jcp/139/7/10.1063/1.4818603
http://aip.metastore.ingenta.com/content/aip/journal/jcp/139/7/10.1063/1.4818603

Figures

Image of FIG. 1.
FIG. 1.

Schematic view of (a) Fe(phen)(NCS) and (b) Fe{[MePyrz]BH}. (c) Temperature-dependent measurement of Fe-pyrz susceptibility measured by SQUID. Arrows indicate the temperature sweep direction.

Image of FIG. 2.
FIG. 2.

(a) XAS reference spectra, obtained using photon intensity I, of the HS and LS states of Fe-phen and Fe-pyrz powders. (b) Raw Fe-phen XAS spectrum measured at T = 30 K and I = 10 I and fit to the raw XAS spectrum using a combination of the HS/LS reference spectra (78% HS, 22% LS).

Image of FIG. 3.
FIG. 3.

(a) Examples of the Fe-phen HS proportion dynamics that illustrate the impact of temperature and x-ray intensity. A Fe-pyrz dataset is also plotted for comparison. Lines represent fits using Eq. (1) . For each SOXIESST dynamics spectrum, the stabilized value of the HS proportion was used to plot the temperature dependence of the SOXIESST HS proportion shown in Fig. 3(c) . (b) SCO dynamics promoted by SOXIESST alone and LIESST + SOXIESST for 10 I. The light-excited data-set was recorded by first illuminating the sample with light for 30 min to achieve a LIESST-saturated HS proportion, then recording the SOXIESST dynamics spectrum. At the mark, the LED intensity was increased to achieve a LIESST-induced increase in the HS proportion. (c) Temperature dependence of the Fe-phen HS proportion, obtained for 10 I, for the virgin HS proportion (black); for the SOXIESST HS proportion (red, lower temperature points follow the green curve); for the SOXIESST w/o reset HS proportion obtained while increasing the temperature from 4 K under steady x-ray illumination (green); and for the SOXIESST w/o reset + LIESST HS proportion obtained while increasing the temperature from 4 K under steady x-ray and white light illumination (blue). A complementary subset of data, obtained using intensity I, is plotted for Fe-pyrz using open symbols.

Image of FIG. 4.
FIG. 4.

Temperature dependence of the fitted values of (a) the HS → LS relaxation rate constant, with experimental values of Lee and a fit of the 10 I data points based on Eq. (2) , (b) the saturation, k/(k + k), and (c) the time constant 1/(k + k) of the SOXIESST effect for Fe-phen powder, for every SOXIESST dynamics and every intensity.

Tables

Generic image for table
Table I.

Fit parameters for Fe-pyrz and Fe-phen acquired using two x-ray intensities.

Loading

Article metrics loading...

/content/aip/journal/jcp/139/7/10.1063/1.4818603
2013-08-21
2014-04-20
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: First glimpse of the soft x-ray induced excited spin-state trapping effect dynamics on spin cross-over molecules
http://aip.metastore.ingenta.com/content/aip/journal/jcp/139/7/10.1063/1.4818603
10.1063/1.4818603
SEARCH_EXPAND_ITEM