{
  "abstract": "Large anelastic relaxations have been found near the transition temperature in spin crossover (SCO) materials due to stress-induced changes in spin state. To investigate the mechanistic aspects of this phenomenon, we develop here a phenomenological framework, based on the Landau theory of phase transitions, incorporating coupling terms between spin state and elastic strain, which is also extended to the dynamic Landau-Khalatnikov regime. We derive an analytical solution for the mechanical response and conduct a parametric study of a cubic SCO system. Our simulations reveal bulk modulus relaxation, internal friction peaks and renormalization of elastic constants near the spin transition-qualitatively matching recent nanoindentation experiments. The work clarifies the roles of bilinear and higher-order couplings in shaping static and dynamic elastic anomalies, with relevance for mechanical actuator design.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 5,
  "authors": [
    {
      "name": "Maryam Nasimsobhan"
    },
    {
      "name": "Melvyn Larranaga"
    },
    {
      "name": "William Nicolazzi"
    },
    {
      "name": "Gábor Molnár"
    },
    {
      "name": "Azzedine Bousseksou"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/698pzmz0m6dtz.bib",
  "cited_by": 0,
  "doi": "10.1088/1361-648x/aea50d",
  "fulltext_url": null,
  "id": "698pzmz0m6dtz",
  "issns": [
    "0953-8984",
    "1361-648X"
  ],
  "landing_url": "https://hal.science/hal-05759811v1",
  "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": null,
  "native_subjects": [
    [
      "hal",
      "0.phys"
    ],
    [
      "hal",
      "1.phys.cond"
    ],
    [
      "hal",
      "2.phys.cond.cm-ms"
    ],
    [
      "openalex",
      "2504|Magnetism in coordination complexes"
    ]
  ],
  "openalex": "W7212031269",
  "pdf_url": "https://hal.science/hal-05759811/document",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-22",
  "publisher": "IOP Publishing [1989-....]",
  "ris": "https://research.draconitic.com/paper/698pzmz0m6dtz.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:37Z",
      "native_id": "hal-05759811",
      "source": "hal",
      "url": "https://hal.science/hal-05759811v1"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "hal:1.phys.cond",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Landau–Khalatnikov theory of anelastic relaxations in spin-crossover materials",
  "title_text": "Landau–Khalatnikov theory of anelastic relaxations in spin-crossover materials",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:17:37Z",
  "url": "https://research.draconitic.com/paper/698pzmz0m6dtz",
  "venue": "Journal of Physics: Condensed Matter",
  "versions": []
}