Refine your search:     
Report No.
 - 

Observation of two charge ordering transitions in the valence-fluctuating EuPtP by resonant X-ray diffraction

Inami, Toshiya; Michimura, Shinji; Mitsuda, Akihiro*; Wada, Hirofumi*

Two first-order phase transitions of the valence-fluctuating compound EuPtP at $$T_1$$=246 K and $$T_2$$=200 K were examined by means of resonant X-ray diffraction at the Eu $$L_3$$ absorption edge. Although previous M$"o$ssbauer spectroscopy and preliminary X-ray diffraction experiments have suggested charge ordered states, characteristic energy spectra of the 111 and 11$$frac{2}{3}$$ reflections observed in the present experiment unambiguously indicated that twofold and threefold superstructures of Eu valence exist below $$T_2$$ and between $$T_1$$ and $$T_2$$, respectively. We also propose a mechanism to explain the charge ordering in EuPtP based on a charge-lattice coupling that alters a Coulomb repulsion.

Accesses

:

- Accesses

InCites™

:

Percentile:46.13

Category:Materials Science, Multidisciplinary

Altmetrics

:

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.