{
  "abstract": "Structurally well-ordered NiS$_2$ nanocrystals with an average diameter of $27.0 \\pm 6.5$ nm retain the bulk-like two-step antiferromagnetic transitions, as shown by magnetization and heat-capacity measurements. Below the lower transition, the nanocrystals exhibit a hysteretic ferromagnetic response with large coercivity, exchange bias, and a vertical loop shift after field cooling, whereas the $M$-$H$ response just above the transition is nearly linear. These features are best explained by uncompensated surface moments generated where the low-temperature antiferromagnetic order terminates at the nanocrystal surface. The absence of a clear additional bulk-like weak-ferromagnetic component constrains homogeneous-canting models and indirectly favors a domain-wall scenario for the weak ferromagnetism of bulk NiS$_2$.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "Journal reference: J. Phys. Soc. Jpn. 95 (2026) 103702",
  "arxiv": "2607.00474",
  "author_total": 10,
  "authors": [
    {
      "name": "Hayato Miyazaki"
    },
    {
      "name": "Tomohiko Yoshinaga"
    },
    {
      "name": "Ojiro Miyazaki"
    },
    {
      "name": "Akira Matsuo"
    },
    {
      "name": "Koichi Kindo"
    },
    {
      "name": "Hirofumi Ishii"
    },
    {
      "name": "Tatsuya Kawae"
    },
    {
      "name": "Tetsuya Kida"
    },
    {
      "name": "Masashi Nantoh"
    },
    {
      "name": "Yoichi Ishiwata"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/c5n6w9zafq15z.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2607.00474",
  "fulltext_url": null,
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  "landing_url": "https://arxiv.org/abs/2607.00474",
  "language": null,
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  "licence_label": "arXiv licence",
  "licence_source": "article",
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  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cond-mat.mes-hall"
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  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2607.00474",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-16",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/c5n6w9zafq15z.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:22:01Z",
      "native_id": "2607.00474",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2607.00474"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mes-hall",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Weak Ferromagnetism in NiS$_2$ under Nanocrystallization",
  "title_text": "Weak Ferromagnetism in NiS_2 under Nanocrystallization",
  "type": "preprint",
  "updated_at": "2026-10-30T12:22:01Z",
  "url": "https://research.draconitic.com/paper/c5n6w9zafq15z",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.7566/jpsj.95.103702",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
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  ]
}