This title appears in the Scientific Report :
2020
Please use the identifier:
http://dx.doi.org/10.1016/j.jmmm.2020.167063 in citations.
Please use the identifier: http://hdl.handle.net/2128/27072 in citations.
Sensing alterations of the local environment of 3d, 4d, and 4f central ions in polyoxopalladates with soft X-ray magnetic dichroisms
Sensing alterations of the local environment of 3d, 4d, and 4f central ions in polyoxopalladates with soft X-ray magnetic dichroisms
Polyoxopalladates hosting 3d, 4d or 4f central ions form a new class of molecular materials with well-defined, tunable morphology and ions coordination to be considered as model systems for basic research. We investigated the isotropic X-ray absorption near-edge structure (XANES), X-ray magnetic cir...
Saved in:
Personal Name(s): | Schmitz-Antoniak, Carolin (Corresponding author) |
---|---|
Izarova, Natalya V. / Stuckart, Maria / Smekhova, Alevtina / Schmitz, Detlef / Shams, S. Fatemeh / Siemensmeyer, Konrad / Giesen, Margret / Kögerler, Paul | |
Contributing Institute: |
Elektronische Eigenschaften; PGI-6 |
Published in: | Journal of magnetism and magnetic materials, 514 (2020) S. 167063 - |
Imprint: |
Amsterdam
North-Holland Publ. Co.
2020
|
DOI: |
10.1016/j.jmmm.2020.167063 |
Document Type: |
Journal Article |
Research Program: |
Controlling Spin-Based Phenomena |
Link: |
OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/27072 in citations.
Polyoxopalladates hosting 3d, 4d or 4f central ions form a new class of molecular materials with well-defined, tunable morphology and ions coordination to be considered as model systems for basic research. We investigated the isotropic X-ray absorption near-edge structure (XANES), X-ray magnetic circular dichroism (XMCD), and X-ray magnetic linear dichroism (XMLD) to monitor the influence of symmetry changes on electronic and magnetic properties. After a brief introductory review about recent results on 3d and 4d transition metal ions, we (i) show that a change of the coordination symmetry from cubic eightfold (tetrahedral) to sixfold (octahedral) reduces the magnetic moment of Co2+ significantly and (ii) investigate whether axial distortions can modify the 4f states of trivalent lanthanide ions. While for Gd3+ there is no effect visible within experimental uncertainties, changes were observed for Dy3+ and Ho3+. The results are compared to atomic multiplet calculations including the intra-atomic spin-dipole term . Furthermore, several experimental pitfalls are discussed that may lead to misinterpretation of X-ray absorption data but can be excluded in the present study. |