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

The gold-rich intermetallic compounds Sr 2 Au 6 Zn 3 , Eu 2 Au 6 Zn 3 , Sr 2 Au 6 Ga 3 , and Eu 2 Au 6 Ga 3  were synthesized from the elements in sealed tantalum ampoules in induction or muffle furnaces. The europium compounds are reported for the first time and their structures were refined from single crystal X-ray diffractometer data: Sr 2 Au 6 Zn 3  type,  R 3̅ c ,  a  = 837.7(1),  c  = 2184.5(4) pm,  wR 2 = 0.0293, 572  F  2  values for Eu 2 Au 6.04 Zn 2.96  and  a  = 838.1(2),  c  = 2191.7(5) pm,  wR 2 = 0.0443, 513  F  2  values for Eu 2 Au 6.07 Ga 2.93  with 20 variables per refinement. The structures consist of a three-dimensional gold network with a 6R stacking sequence, similar to the respective diamond polytype. The cavities of the network are filled in a ratio of 2:1 by strontium (europium) atoms and Ga 3  (Zn 3 ) triangles in an ordered manner. Sr 2 Au 6 Zn 3  and Sr 2 Au 6 Ga 3  are diamagnetic with room temperature susceptibilities of –3.5 × 10 −4  emu mol –1 . Temperature dependent susceptibility and  151 Eu Mössbauer spectroscopic measurements show a stable divalent ground state for both europium compounds. Eu 2 Au 6 Zn 3  and Eu 2 Au 6 Ga 3  order antiferromagnetically below Néel temperatures of 16.3 and 12.1 K, respectively. Anisotropic electrical conductivity of Sr 2 Au 6 Ga 3  is proven by an alignment of the crystallites in the magnetic field. Orientation-dependent  69;71 Ga NMR experiments combined with quantum mechanical calculations (QM) give evidence for a highly anisotropic charge distribution of the Ga atoms.

zeitschrift für naturforschung b

Triangular Zn 3  and Ga 3  units in Sr 2 Au 6 Zn 3 , Eu 2 Au 6 Zn 3 , Sr 2 Au 6 Ga 3 , and Eu 2 Au 6 Ga 3  – structure, magnetism,  151 Eu Mössbauer and  69;71 Ga solid state NMR spectroscopy