Synthesis and characterization of single-phase yttrium-doped dysprosium titanate

Authors

  • Elijah Drew M. Vibar ⋅ PH National Institute of Physics, University of the Philippines Diliman
  • Lue Jeniel S. Cruz ⋅ PH National Institute of Physics, University of the Philippines Diliman
  • Juan Miguel La Madrid ⋅ PH National Institute of Physics, University of the Philippines Diliman
  • Kint Ynnos Llevares ⋅ PH Materials Science and Engineering Program, University of the Philippines Diliman
  • Iries-Gwyneth C. Sierra ⋅ PH National Institute of Physics, University of the Philippines Diliman
  • Angelo Gabriel Nueva ⋅ PH National Institute of Physics, University of the Philippines Diliman
  • Allan C. Yago ⋅ PH Institute of Chemistry, University of the Philippines Diliman
  • Vallerie Samson ⋅ PH Department of Science and Technology – Philippine Nuclear Research Institute
  • Takahiro Matsuoka ⋅ PH Japan Synchrotron Radiation Research Institute
  • Bess G. 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 synthesized a single-phase structure of dysprosium titanate doped with yttrium (Dy2−xYxTi2O7) via a high-temperature solid-state reaction, where precursor mixtures were ground and annealed up to 1450°C. X-ray diffraction (XRD) data confirmed the stabilization of a single-phase solid solution, with a possible modified Fd3̅m pyrochlore lattice, across all substitution levels without detectable impurities. Raman spectroscopy revealed a distinct shift of the A1g vibrational mode to higher frequencies with increasing yttrium concentration. This could result from the reduced mass of the yttrium-substituted lattice compared to the heavier dysprosium.

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Published

2026-06-02

Issue

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

Section

Condensed Matter Physics and Materials Science

License

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How to Cite

[1]
EDM Vibar, LJS Cruz, JM La Madrid, KY Llevares, I-GC Sierra, AG Nueva, AC Yago, V Samson, T Matsuoka, BG Singidas, and RV Sarmago, Synthesis and characterization of single-phase yttrium-doped dysprosium titanate, in Proceedings of the 44th Samahang Pisika ng Pilipinas Physics Conference (Philippines, 2026), SPP-2026-2B-04. URL: https://proceedings.spp-online.org/article/view/SPP-2026-2B-04
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