TY  - JOUR
AU  - Nentwich, Melanie
AU  - Zschornak, Matthias
AU  - Richter, Carsten
AU  - Novikov, Dmitri
AU  - Meyer, Dirk C
TI  - Analysis of modulated Ho<sub>2</sub>PdSi<sub>3</sub> crystal structure at Pd K and Ho L absorption edges using resonant elastic X-scattering
JO  - Journal of physics / Condensed matter
VL  - 28
IS  - 6
SN  - 1361-648X
CY  - Bristol
PB  - IOP Publ.
M1  - PUBDB-2016-05373
SP  - 066002
PY  - 2016
N1  - (c) IOP Publishing Ltd. Post referee full text in progress (embargo 1 year from 20 January 2016). 
AB  - Replacing Si atoms with a transition metal in rare earth disilicides results in a family of intermetallic compounds with a variety of complex magnetic phase transitions. In particular, the family R 2PdSi3 shows interesting magnetic behavior arising from the electronic interaction of the R element with the transition metal in the Si network, inducing the specific structure of the related phase. Within this series, the highest degree of superstructural order was reported for the investigated representative Ho2PdSi3, although several competing superstructures have been proposed in literature.The diffraction anomalous fine structure (DAFS) method is highly sensitive to the local structure of chosen atoms at specific positions within the unit cell of a crystalline phase. In combination with x-ray absorption fine structure (XAFS), this sophisticated synchrotron method has been applied in the present work to several selected reflections, i.a. a satellite reflection. Extensive electronic modeling was used to test the most relevant structure proposals. The 2×2×8 superstructure has been strongly confirmed, although a small amount of disorder in the modulation is very probable.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000368788100020
C6  - pmid:26788844
DO  - DOI:10.1088/0953-8984/28/6/066002
UR  - https://bib-pubdb1.desy.de/record/312185
ER  -