{
  "abstract": "Nominal BaNdFeO₄ has previously been regarded as a single-phase rare-earth ferrite; however, its true phase constitution and intrinsic functional properties remain insufficiently clarified. In this work, we revisit the nominal BaNdFeO₄ composition and demonstrate that it does not form as a single-phase compound, but rather as an intrinsic Ba-Nd-Fe-O self-composite predominantly consisting of Ba₆Nd₂Fe₄O₁₅ and BaNd₂Fe₂O₇ with comparable weight fractions. Combined X-ray diffraction, neutron powder diffraction, and morphological characterization, and energy-dispersive X-ray spectroscopy analyses provide consistent evidence for this revised phase composition. Neutron diffraction further reveals a previously unreported magnetic structure evolution in BaNd₂Fe₂O₇, in which an in-plane Fe-sublattice antiferromagnetic state with k ₁ = (0, 0, 0) is established at room temperature and progressively rotates toward the c axis near 20 K with the onset of Nd magnetic ordering. Meanwhile, Ba₆Nd₂Fe₄O₁₅ develops long-range collinear antiferromagnetic ordering of both Fe and Nd ions below T N ≈ 18 K with a magnetic propagation vector k ₂ = (1/2, 0, 0). The intrinsic coexistence of these structurally and magnetically distinct phases produces an interface-rich and defect-prone microstructure that promotes dielectric-dominant broadband microwave absorption. Reflection-loss analysis reveals thickness-tunable absorption governed by effective impedance matching and quarter-wavelength interference, yielding a maximum effective absorption bandwidth of approximately 5.3 GHz at a thickness of ∼5.0 mm. These findings underscore the potential of this Ba-Nd-Fe-O intrinsic self-composite as a promising chemically stable oxide for broadband electromagnetic wave attenuation.",
  "abstract_shown": true,
  "affiliations": [
    "Department of Engineering Physics, Hochiminh City University of Technology and Engineering Ho Chi Minh City Vietnam.",
    "Department of Physics, Le Quy Don Technical University Hanoi 100000 Vietnam.",
    "Department of Physics, Ho Chi Minh City University of Education 700000 Ho Chi Minh Vietnam.",
    "Faculty of Engineering Physics and Nanotechnology, VNU-University of Engineering and Technology 144 Xuan Thuy, Cau Giay 100000 Hanoi Vietnam.",
    "Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research 141980 Dubna Russia.",
    "Faculty of Natural Sciences, Duy Tan University 550000 Danang Vietnam hoangtrongphuc@duytan.edu.vn.",
    "Institute of Research and Development, Duy Tan University 550000 Danang Vietnam."
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 15,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "T A Tran",
      "orcid": "0000-0002-8745-224X"
    },
    {
      "affs": [
        1
      ],
      "name": "D Q Tran"
    },
    {
      "affs": [
        0
      ],
      "name": "L S Hai"
    },
    {
      "affs": [
        0
      ],
      "name": "N L V Thanh"
    },
    {
      "affs": [
        0
      ],
      "name": "T K C Tran"
    },
    {
      "affs": [
        2
      ],
      "name": "N L Phan",
      "orcid": "0000-0003-2292-6157"
    },
    {
      "affs": [
        0
      ],
      "name": "H C Tran"
    },
    {
      "affs": [
        0
      ],
      "name": "G A V Phan"
    },
    {
      "affs": [
        0
      ],
      "name": "V A Dao"
    },
    {
      "affs": [
        0
      ],
      "name": "D H Ta"
    },
    {
      "affs": [
        3
      ],
      "name": "T L Phan",
      "orcid": "0009-0005-5384-4391"
    },
    {
      "affs": [
        4
      ],
      "name": "S E Kichanov"
    },
    {
      "affs": [
        4
      ],
      "name": "A V Rutkauskas"
    },
    {
      "affs": [
        5,
        6
      ],
      "name": "T P Hoang",
      "orcid": "0009-0008-7223-9092"
    },
    {
      "affs": [
        5,
        6
      ],
      "name": "N T Dang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/d4tggaqgccjyz.bib",
  "cited_by": 0,
  "doi": "10.1039/d6ra06375f",
  "fulltext_url": "https://europepmc.org/articles/PMC13681194",
  "id": "d4tggaqgccjyz",
  "issns": [
    "2046-2069"
  ],
  "landing_url": "https://europepmc.org/article/MED/42903601",
  "language": "eng",
  "licence": "CC-BY-NC",
  "licence_label": "CC BY-NC",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "heading",
      "Chemistry"
    ],
    [
      "openalex",
      "2504|Electromagnetic wave absorption materials"
    ]
  ],
  "openalex": "W7223059131",
  "pdf_url": "https://europepmc.org/articles/PMC13681194?pdf=render",
  "pmcid": "PMC13681194",
  "pmid": "42903601",
  "published": "2026-10-20",
  "publisher": "Royal Society of Chemistry",
  "ris": "https://research.draconitic.com/paper/d4tggaqgccjyz.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:19:53Z",
      "native_id": "MED:42903601",
      "source": "europepmc",
      "url": "https://europepmc.org/article/MED/42903601"
    },
    {
      "first_seen": "2026-11-07T12:23:35Z",
      "native_id": "PMC13681194",
      "source": "pmc",
      "url": "https://doi.org/10.1039/d6ra06375f"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2504|Electromagnetic wave absorption materials",
      "subfield": "materials-polymers"
    }
  ],
  "title": "BaNdFeO₄ revisited: true phase composition, magnetic structure evolution, and broadband microwave absorption in an intrinsic self-composite.",
  "title_text": "BaNdFeO₄ revisited: true phase composition, magnetic structure evolution, and broadband microwave absorption in an intrinsic self-composite.",
  "type": "peer-reviewed",
  "updated_at": "2026-11-08T12:21:04Z",
  "url": "https://research.draconitic.com/paper/d4tggaqgccjyz",
  "venue": "RSC advances",
  "versions": []
}