{
  "abstract": "We report a systematic study of the interplay between oxygen nonstoichiometry, crystal structure, and magnetic/electrotransport properties in $\\mathrm{Sr}_{1-x}\\mathrm{Nd}_{x}\\mathrm{CoO}_{3-δ}$ ($x = 0.1, 0.2, 0.3$). High-resolution neutron powder diffraction combined with synchrotron x-ray powder diffraction reveals that increasing the oxygen content induces a structural transition from a layered $I4/mmm$ ($2a_p \\times 2a_p \\times 4a_p$) to an oxygen-deficient orthorhombic $Pmmm$ ($a_p \\times a_p \\times 2a_p$) phases with preferential oxygen-vacancy occupation. This transition is accompanied by a crossover from G-type antiferromagnetic with a weak ferromagnetic component to a ferromagnetic state, and a drastic decay in resistivity. The evolution of the magnetic and transport properties is discussed in terms of changes in the Co spin state, enhanced Co $3d$ - O $2p$ orbital overlap upon oxygen uptake, and a magnetically inhomogeneous ferromagnetic state associated with residual oxygen vacancies and mixed $\\mathrm{Co}^{3+}/\\mathrm{Co}^{4+}$ valence. Our findings experimentally confirm that the stabilization of the layered \"314\" structure is driven by the presence and ordering of oxygen vacancies rather than A-site cation ordering, whereas the oxygen-deficient oxidized compounds represent an intermediate orthorhombic state preceding fully stoichiometric phases.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "Journal reference: Phys. Rev. B 114, 254402, 2026",
  "arxiv": "2607.10346",
  "author_total": 8,
  "authors": [
    {
      "name": "Nina Tereshko"
    },
    {
      "name": "Roman Lanovsky"
    },
    {
      "name": "Olivier Toulemonde"
    },
    {
      "name": "Maxim Bushinsky"
    },
    {
      "name": "Stanislav Savvin"
    },
    {
      "name": "Vadim Sikolenko"
    },
    {
      "name": "Lingyan Xu"
    },
    {
      "name": "Aleksandr Nikitin"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/c8ea1qb0d8c4g.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2607.10346",
  "fulltext_url": null,
  "id": "c8ea1qb0d8c4g",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2607.10346",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cond-mat.mtrl-sci"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2607.10346",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-04",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/c8ea1qb0d8c4g.ris",
  "sources": [
    {
      "first_seen": "2026-11-05T15:20:56Z",
      "native_id": "2607.10346",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2607.10346"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mtrl-sci",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Oxygen-nonstoichiometry-driven phase transition in $\\mathrm{Sr}_{1-x}\\mathrm{Nd}_{x}\\mathrm{CoO}_{3-δ}$ ($x = 0.1, 0.2, 0.3$) perovskites",
  "title_text": "Oxygen-nonstoichiometry-driven phase transition in Sr_1−xNd_xCoO_3−δ (x = 0.1, 0.2, 0.3) perovskites",
  "type": "preprint",
  "updated_at": "2026-11-06T18:21:10Z",
  "url": "https://research.draconitic.com/paper/c8ea1qb0d8c4g",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1103/h1p6-vpb4",
      "pid": "9dy716c3ebg19",
      "relation": "published-as",
      "title": "Oxygen-nonstoichiometry-driven phase transition in Sr1−xNdxCoO3−δ (x = 0.1, 0.2, 0.3) perovskites",
      "venue": "Physical Review B"
    }
  ]
}