{
  "abstract": "Nickel-based spinel oxide has recently attracted significant attention due to its remarkable magneto-transport properties, promising various spintronic applications. In this study, we observe an exchange bias effect, where the magnetic hysteresis loop shifts both horizontally and vertically when single-phase nanocrystalline NiCo2O4 is cooled in the presence of an external magnetic field. The magnitude of the exchange bias field is approximately 375 Oe at 5 K, and this effect disappears around 300 K. Furthermore, NiCo2O4 shows semiconducting behaviour in longitudinal resistivity and demonstrates a substantial negative magnetoresistance of ~31.5% at 10 K. The magnetoresistance exhibits a butterfly-shaped behaviour at low magnetic fields and becomes almost linear at high magnetic fields. A detailed analysis of the negative magnetoresistance and exchange bias reveals that both phenomena originate from the formation of antiphase boundaries in the as-synthesized NiCo2O4 sample, as confirmed by the high-resolution transmission electron micrograph.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2607.12740",
  "author_total": 3,
  "authors": [
    {
      "name": "Biswanath Pramanik"
    },
    {
      "name": "Pushpesh Pathak"
    },
    {
      "name": "Binoy K. Hazra"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/20jm98dnyemfb.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2607.12740",
  "fulltext_url": null,
  "id": "20jm98dnyemfb",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2607.12740",
  "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": null,
  "pdf_url": "https://arxiv.org/pdf/2607.12740",
  "pmcid": null,
  "pmid": null,
  "published": "2026-07-14",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/20jm98dnyemfb.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:34:04Z",
      "native_id": "2607.12740",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2607.12740"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mtrl-sci",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Antiphase boundary-driven large exchange bias and negative magnetoresistance in NiCo2O4",
  "title_text": "Antiphase boundary-driven large exchange bias and negative magnetoresistance in NiCo2O4",
  "type": "preprint",
  "updated_at": "2026-10-30T12:34:04Z",
  "url": "https://research.draconitic.com/paper/20jm98dnyemfb",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1016/j.jmmm.2026.174575",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}