{
  "abstract": "The widespread implementation of luminescence thermometers requires a comprehensive understanding of the structural factors governing their thermometric performance. Establishing such structure-property relationships is essential for the rational design of sensing materials with application-tailored characteristics. This is particularly relevant for phase-transition-based luminescence thermometers, which offer exceptionally high relative sensitivities. The systematic analysis of K3Lu(PO4)2:Eu3+ demonstrates that introducing co-dopant ions with a controlled ionic-radius mismatch provides an effective strategy for tailoring phase-transition characteristics. This approach enables both the phase-transition temperature and thermal operating range to be controlled. Specifically, the transition temperature shifts from 210 K for K3Lu(PO4)2:Eu3+ to 310 K for K3Lu(PO4)2:Eu3+,10%La3+, while the operating range broadens from 30 to 60 K. Importantly, linear correlations between the ionic-radius mismatch parameter, Ω, and the phase-transition temperature, enthalpy, and entropy provide a quantitative framework for controlling the thermodynamics of the transition through compositional engineering. Beyond luminescence thermometry, these relationships establish a general strategy for designing materials exhibiting first-order phase transitions with tailored thermodynamic characteristics, opening opportunities for their optimization across a broad range of functional applications.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.15116",
  "author_total": 4,
  "authors": [
    {
      "name": "A. Javaid"
    },
    {
      "name": "M. Szymczak"
    },
    {
      "name": "A. Sieradzki"
    },
    {
      "name": "L. Marciniak"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/2g9xbh6t61rkt.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.15116",
  "fulltext_url": null,
  "id": "2g9xbh6t61rkt",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.15116",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cond-mat.mtrl-sci"
    ],
    [
      "openalex",
      "2505|Luminescence Properties of Advanced Materials"
    ]
  ],
  "openalex": "W7213224716",
  "pdf_url": "https://arxiv.org/pdf/2609.15116",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-14",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/2g9xbh6t61rkt.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:21:25Z",
      "native_id": "2609.15116",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.15116"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mtrl-sci",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Ionic-Radius Mismatch as a Structural Lever for Tuning Phase Transitions and Luminescent Thermometry",
  "title_text": "Ionic-Radius Mismatch as a Structural Lever for Tuning Phase Transitions and Luminescent Thermometry",
  "type": "preprint",
  "updated_at": "2026-10-30T12:21:25Z",
  "url": "https://research.draconitic.com/paper/2g9xbh6t61rkt",
  "venue": "arXiv",
  "versions": []
}