{
  "abstract": "This study presents a comprehensive investigation of polarization dynamics and phase transitions in a novel homologous series of polar nematics (nJK, n=1-5) using broadband dielectric spectroscopy (DS). The analysis of dielectric spectra in planar and homeotropic cells revealed the evolution of relaxation mechanisms, transitioning from single-particle molecular reorientations in the isotropic phase to complex collective dynamics across the nematic (N), intermediate (N X ), and ferroelectric nematic (N F ) phases. Critical soft-mode behavior was observed near the N F transition for both the longitudinal mode (m1, acting as an amplitude mode) and the high-frequency mode (m3, exhibiting phason-like characteristics), indicating strong coupling between molecular dipoles and splay fluctuations. Furthermore, fitting the dielectric permittivity to a modified Curie–Weiss law reveals a broad temperature range of relaxor-like behavior above T c, characterized by diffuseness exponents γ ≈1.6 for ferroelectric members ( 3JK,4JK). This confirms the formation of Polar Nanoregions (PNRs) stabilized by lateral shifted molecular arrangements in the high-temperature nematic liquid, establishing a nematic relaxor ferroelectric (nRFE) state spanning almost the entire N phase window.",
  "abstract_shown": true,
  "affiliations": [
    "Institute of Materials Engineering, Faculty of Science and Technology",
    "University of Silesia",
    "Institute of Chemistry, Faculty of Advanced Technologies and Chemistry",
    "Military University of Technology"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 5,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "Aleksander Janik"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Bartosz Nikiel",
      "orcid": "0009-0000-7432-6773"
    },
    {
      "affs": [
        2,
        3
      ],
      "name": "Jakub Karcz"
    },
    {
      "affs": [
        2,
        3
      ],
      "name": "Przemysław Kula"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Antoni Kocot"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/2sqq3nn53zv05.bib",
  "cited_by": 0,
  "doi": "10.26434/chemrxiv.15010997/v1",
  "fulltext_url": null,
  "id": "2sqq3nn53zv05",
  "issns": [],
  "landing_url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15010997/v1",
  "language": null,
  "licence": "CC-BY-NC",
  "licence_label": "CC BY-NC",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by-nc/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2504|Liquid Crystal Research Advancements"
    ]
  ],
  "openalex": "W7223577561",
  "pdf_url": "https://chemrxiv.org/doi/pdf/10.26434/chemrxiv.15010997/v1",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-25",
  "publisher": "American Chemical Society (ACS)",
  "ris": "https://research.draconitic.com/paper/2sqq3nn53zv05.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:26Z",
      "native_id": "10.26434/chemrxiv.15010997",
      "source": "chemrxiv",
      "url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15010997/v1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2504|Liquid Crystal Research Advancements",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Dielectric Dynamics and Polar Nanoregions in Ferroelectric Nematic Liquid Crystals of the nJK Series",
  "title_text": "Dielectric Dynamics and Polar Nanoregions in Ferroelectric Nematic Liquid Crystals of the nJK Series",
  "type": "preprint",
  "updated_at": "2026-10-30T12:17:26Z",
  "url": "https://research.draconitic.com/paper/2sqq3nn53zv05",
  "venue": "ChemRxiv",
  "versions": []
}