{
  "abstract": "Incorporation of Mg 2+ on the A-site of ABO 3 perovskite oxides such as BaTiO 3 and SrTiO 3 has been limited by severe ionic size differences of the A-site cations with some reports claiming <1% substitution possible. Here, we demonstrate a precursor-mediated synthesis pathway to achieve extensive A-site Mg 2+ substitution in perovskite oxides – up to 50 mol%. By leveraging binary and ternary metal carbonates that are chemically mixed at the crystallographic scale, barriers associated with conventional solid-state reactions are bypassed. Specifically, we show that norsethite-type precursors such as BaMg(CO 3 ) 2 and Ba 0.5 Sr 0.5 Mg(CO 3 ) 2 react with TiO 2 to yield single-phase cubic perovskites Ba 0.5 Mg 0.5 TiO 3 and Ba 0.25 Sr 0.25 Mg 0.5 TiO 3 at temperatures as low as 640°C. This work highlights crystallographic-scale chemical mixing of carbonates as a generalizable route for accessing kinetically trapped, metastable oxides that are far from equilibrium.",
  "abstract_shown": true,
  "affiliations": [
    "Department of Materials Science and Engineering",
    "North Carolina State University",
    "Analytical Instrumentation Facility"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 3,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "Jacob L. Jones",
      "orcid": "0000-0002-9182-0957"
    },
    {
      "affs": [
        2,
        1
      ],
      "name": "Jennifer S. Forrester"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Thomas Rowe"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/62ahswyc15b9e.bib",
  "cited_by": 0,
  "doi": "10.26434/chemrxiv.15008363/v1",
  "fulltext_url": null,
  "id": "62ahswyc15b9e",
  "issns": [],
  "landing_url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15008363/v1",
  "language": null,
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2505|Ferroelectric and Piezoelectric Materials"
    ]
  ],
  "openalex": "W7211918904",
  "pdf_url": "https://chemrxiv.org/doi/pdf/10.26434/chemrxiv.15008363/v1",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-06",
  "publisher": "American Chemical Society (ACS)",
  "ris": "https://research.draconitic.com/paper/62ahswyc15b9e.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:17Z",
      "native_id": "10.26434/chemrxiv.15008363",
      "source": "chemrxiv",
      "url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15008363/v1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2505|Ferroelectric and Piezoelectric Materials",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Extensive A-Site Magnesium Solubility in Perovskite Oxides via Precursor-mediated Synthesis Pathways",
  "title_text": "Extensive A-Site Magnesium Solubility in Perovskite Oxides via Precursor-mediated Synthesis Pathways",
  "type": "preprint",
  "updated_at": "2026-10-30T12:17:17Z",
  "url": "https://research.draconitic.com/paper/62ahswyc15b9e",
  "venue": "ChemRxiv",
  "versions": []
}