{
  "abstract": "Smart insulation is a turn-to-turn layer that insulates in normal operation and conducts only near a hot spot. It could combine the fast ramping of insulated coils with the passive energy dump of non-insulated coils. Metal-insulator transition (MIT) oxides are natural candidates, but the only one tested in a coil so far, V2O3, switches at 150-170 K, far above the 30-70 K window useful for REBCO magnets. We explore the vanadium-oxygen system to lower the transition. TGA redox processing produced multi-phase powders with an effective transition near 127 K, about 25 K below V2O3. Hydrothermal V3O7, hydrated or annealed, was far too resistive and showed no usable transition. V2O3-epoxy specimens provided a robust reference and an acceptance criterion. Cryogenic measurements revealed a reproducible thermal hysteresis, and the measured specific heat of V2O3 corrects earlier model inputs by close to two orders of magnitude. A first electro-thermal model reproduces current sharing through the smart-insulation layer. Doped V2O3 and V8O15 are identified as the next targets.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.16581",
  "author_total": 8,
  "authors": [
    {
      "name": "Mattia Ortino"
    },
    {
      "name": "Davide Uglietti"
    },
    {
      "name": "Andrea Testino"
    },
    {
      "name": "Nicola Casati"
    },
    {
      "name": "Alexander Steppke"
    },
    {
      "name": "Wiktoria Wnetkowska"
    },
    {
      "name": "Andrea Masi"
    },
    {
      "name": "Kamil Sedlak"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/6chq4e6m9geha.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.16581",
  "fulltext_url": null,
  "id": "6chq4e6m9geha",
  "issns": [],
  "landing_url": "https://hal.science/hal-05791897v1",
  "language": "en",
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cond-mat.supr-con"
    ],
    [
      "hal",
      "0.phys"
    ],
    [
      "hal",
      "1.phys.cond"
    ],
    [
      "hal",
      "2.phys.cond.cm-s"
    ],
    [
      "openalex",
      "2204|Superconducting Materials and Applications"
    ]
  ],
  "openalex": "W7221788891",
  "pdf_url": "https://hal.science/hal-05791897/document",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-10",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/6chq4e6m9geha.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:53Z",
      "native_id": "hal-05791897",
      "source": "hal",
      "url": "https://hal.science/hal-05791897v1"
    },
    {
      "first_seen": "2026-10-30T12:29:06Z",
      "native_id": "2610.16581",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.16581"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.supr-con",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Tailored VxOy Metal–Insulator-Transition Oxides for Temperature-Triggered Smart Insulation in Superconducting Coils",
  "title_text": "Tailored VxOy Metal–Insulator-Transition Oxides for Temperature-Triggered Smart Insulation in Superconducting Coils",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:06Z",
  "url": "https://research.draconitic.com/paper/6chq4e6m9geha",
  "venue": "HAL",
  "versions": []
}