{
  "abstract": "We investigate the magnetization dynamics crossover from single-particle to collective behavior in a one-dimensional chain of dipolar-coupled nanomagnets with uniaxial anisotropy. Using both an intermediate-to-high damping (IHD) analytical approach based on Langer's theory and time-quantified Monte Carlo (TQMC) simulations, we derive and validate semi-analytical expressions for the relaxation rate and the magnetization relaxation curves. Our main results include: (i) a closed-form expression for the relaxation rate accounting for (weak) dipolar interactions, (ii) a two-exponential semi-analytical formula for the magnetization dynamics $m(t)$ of an interacting chain, and (iii) a systematic comparison with TQMC simulations, showing good agreement for a wide range of parameters. The analysis reveals a field-controlled crossover from uniform (macrospin-like) reversal to edge-nucleation propagation, driven by the spatial inhomogeneity of dipolar stabilization. The derived expressions provide a computationally efficient framework for predicting the relaxation behavior of dipolar-coupled nanomagnetic assemblies.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.39811",
  "author_total": 4,
  "authors": [
    {
      "name": "Denis Ledue"
    },
    {
      "name": "Renaud Patte"
    },
    {
      "name": "Francois Vernay"
    },
    {
      "name": "Hamid Kachkachi"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/3kdhrc4nk9wdg.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.39811",
  "fulltext_url": null,
  "id": "3kdhrc4nk9wdg",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.39811",
  "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.mes-hall"
    ],
    [
      "openalex",
      "3107|Magnetic properties of thin films"
    ]
  ],
  "openalex": "W7215058191",
  "pdf_url": "https://arxiv.org/pdf/2609.39811",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-30",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/3kdhrc4nk9wdg.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:25:49Z",
      "native_id": "2609.39811",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.39811"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mes-hall",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Magnetization relaxation of interacting chains of nanomagnets",
  "title_text": "Magnetization relaxation of interacting chains of nanomagnets",
  "type": "preprint",
  "updated_at": "2026-10-30T12:25:49Z",
  "url": "https://research.draconitic.com/paper/3kdhrc4nk9wdg",
  "venue": "arXiv",
  "versions": []
}