{
  "abstract": "While most studies on Co$2$MnAl (CMA) focus on the ultrathin regime for spintronic junctions, applications scaling with magnetic volume--such as Anomalous Nernst Effect (ANE) energy harvesters, integrated power inductors, and magnetic MEMS--require significantly thicker films. In this work, 750 nm thick CMA films were grown on MgO (001) and Si substrates to establish a roadmap for their thermal integration. Structural analysis reveals that B2 ordering is optimized on MgO at 600 $^\\circ$C, which is important for functional devices. In contrast, samples on Si substrates exhibit a disorder transition toward the A2 phase, closely linked to diffusion-driven degradation processes. Above 500 $^\\circ$C, Si interdiffusion into the Heusler layer triggers the formation of interfacial silicides and Kirkendall voids, leading to microcracking, electrical resistivity jumps, and a final fully disordered A2 phase. Despite the Mn-poor stoichiometry (Co$2.25$Mn$0.7$Al$1.05$), the films maintain a robust saturation magnetization of ~600 emu/cm$^3$, consistent with recent theoretical models for off-stoichiometric Heusler alloys. These results define the processing windows for integrating thick CMA layers into multifunctional CMOS-compatible platforms.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "Journal reference: Journal of Alloys and Compounds 1079 (2026) 189914",
  "arxiv": "2610.17955",
  "author_total": 6,
  "authors": [
    {
      "name": "David Robles-Cuenca"
    },
    {
      "name": "Juan Antonio González"
    },
    {
      "name": "Juan Pedro Andrés"
    },
    {
      "name": "Miguel Ángel Arranz"
    },
    {
      "name": "Mohamed Salaheldeen"
    },
    {
      "name": "Ricardo López Antón"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/deef47pxn5kk6.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.17955",
  "fulltext_url": null,
  "id": "deef47pxn5kk6",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.17955",
  "language": null,
  "licence": "CC-BY-NC-ND-4.0",
  "licence_label": "CC BY-NC-ND 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cond-mat.mtrl-sci"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2610.17955",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-13",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/deef47pxn5kk6.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:11Z",
      "native_id": "2610.17955",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.17955"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mtrl-sci",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Thermal stability and structural ordering of thick Co$_2$MnAl films grown on MgO and Si substrates",
  "title_text": "Thermal stability and structural ordering of thick Co_2MnAl films grown on MgO and Si substrates",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:11Z",
  "url": "https://research.draconitic.com/paper/deef47pxn5kk6",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1016/j.jallcom.2026.189914",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}