English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

A complete formula consisting of the static factor stemming from lattice thermal expansion and the dynamic factor owing to electron-phonon interaction is employed to investigate the thermal shift at near and higher than room temperature for the  7  D 0 ⟶ 5 F 0   fluorescence line in strontium tetraborate (SrB 4 O 7 ):Sm 2+  crystal. The static factor is gained in terms of the pressure dependence of the fluorescence line. With the aid of an approximate processing, the static parameter  A  (characterising the static factor) and the electron-phonon coupling parameter  α  ’  (characterising the dynamic factor) are estimated even if there is no observed thermal shift curve from low temperature (&lt;30 K) to near and higher than room temperature. The static factor and dynamic one in SrB 4 O 7 :Sm 2+  crystal give rise to the thermal blue shift and red shift, respectively, and the total or observed thermal shift is due to the emulation between the two factors. The static factor in shift direction is contrary to and in magnitude is slightly greater than the dynamic one for the  7  D 0 ⟶ 5 F 0   line in SrB 4 O 7 :Sm 2+  crystal. Thus, the observed very small thermal blue shift (which is not explained up to now) for the studied line in SrB 4 O 7 :Sm 2+  crystal is rationally explained.

zeitschrift für naturforschung a

A Full Analysis Including Both the Static and Dynamic Factors for the Thermal Shift of  7  D  0  ⟶  5  F  0  Fluorescence Line in SrB 4 O 7 :Sm 2+ Crystal