Crystal structure and electron density of Y-doped Dy2Ti2O7

Authors

  • Iries-Gwyneth C. Sierra ⋅ PH National Institute of Physics, University of the Philippines Diliman
  • Juan Miguel La Madrid ⋅ PH National Institute of Physics, University of the Philippines Diliman
  • Lue Jeniel Cruz ⋅ PH National Institute of Physics, University of the Philippines Diliman
  • Elijah Vibar ⋅ PH National Institute of Physics, University of the Philippines Diliman
  • Kint Ynnos Llevares ⋅ PH Materials Science and Engineering Program, University of the Philippines Diliman
  • Takahiro Matsuoka ⋅ JP Japan Synchrotron Radiation Research Institute
  • Bess Singidas ⋅ PH National Institute of Physics, University of the Philippines Diliman
  • Roland V. Sarmago ⋅ PH National Institute of Physics, University of the Philippines Diliman

Abstract

We propose a structure of dysprosium titanate (DTO) when doped with yttrium (Y) at different concentrations. X-ray diffraction (XRD) data of DTO with different concentrations of Y were compiled and analyzed using Rietveld refinement. We found slight changes in the lattice parameter a and movements in the oxygen with Wyckoff position 48f.  The electron density map (EDM) suggested changes in the electron density around the dysprosium atom. This could result in changes in the crystal field dynamics in the pyrochlore system that potentially affect the spin directions in a spin ice system. Further analysis are suggested to see high resolution doping mechanism of Y and to navigate the magnetic moments in the system.

Downloads

Published

2026-06-09

Issue

2026: Proceedings of the 44th Samahang Pisika ng Pilipinas Physics Conference

Section

Poster Session PB

License

Copyright License Agreement for Full Articles

How to Cite

[1]
I-GC Sierra, JM La Madrid, LJ Cruz, E Vibar, KY Llevares, T Matsuoka, B Singidas, and RV Sarmago, Crystal structure and electron density of Y-doped Dy2Ti2O7, in Proceedings of the 44th Samahang Pisika ng Pilipinas Physics Conference (Philippines, 2026), SPP-2026-PB-27. URL: https://proceedings.spp-online.org/article/view/SPP-2026-PB-27
BibTeX (.bib)