{
  "abstract": "Here, we isolate how Cu concentration and Jahn-Teller distortions control the out-of-plane lattice parameter of pseudomorphic MgCoNiCuZnO-derived high-entropy oxide films on MgO. We prepare nine compositions spanning 0-20% Cu, verify target composition and phase by X-ray fluorescence and diffraction, and grow films by pulsed laser deposition across multiple substrate temperatures. At 500 °C, the lattice parameter increases nearly linearly with Cu content; at 300°C, it decreases nonlinearly, producing a 2.6% difference between temperature regimes for equimolar MgCoNiCuZnO at our growth conditions. We attribute this change in lattice parameter to temperature-dependent coupling between Cu-driven Jahn-Teller distortions and Co valence change. While prior work identifies Co valence as the primary driver of the MgCoNiCuZnO lattice response with temperature; our results establish Cu Jahn-Teller distortion as an equally important structural control parameter.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.31899",
  "author_total": 6,
  "authors": [
    {
      "name": "Dhiya Srikanth"
    },
    {
      "name": "Joseph Petruska"
    },
    {
      "name": "Matthew Furst"
    },
    {
      "name": "Kaylin Lamaute"
    },
    {
      "name": "Jon-Paul Maria"
    },
    {
      "name": "Saeed S. I. Almishal"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/eazaysn4g56qf.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.31899",
  "fulltext_url": null,
  "id": "eazaysn4g56qf",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.31899",
  "language": null,
  "licence": "CC-BY-SA-4.0",
  "licence_label": "CC BY-SA 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by-sa/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cond-mat.mtrl-sci"
    ],
    [
      "openalex",
      "2210|High Entropy Alloys Studies"
    ]
  ],
  "openalex": "W7214744292",
  "pdf_url": "https://arxiv.org/pdf/2609.31899",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-06",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/eazaysn4g56qf.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:27:22Z",
      "native_id": "2609.31899",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.31899"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mtrl-sci",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Jahn-Teller Distortion-Driven Lattice Parameter Tunability in Coherent High-Entropy Oxide Thin Films",
  "title_text": "Jahn-Teller Distortion-Driven Lattice Parameter Tunability in Coherent High-Entropy Oxide Thin Films",
  "type": "preprint",
  "updated_at": "2026-10-30T12:27:22Z",
  "url": "https://research.draconitic.com/paper/eazaysn4g56qf",
  "venue": "arXiv",
  "versions": []
}