{
  "abstract": "We report the synthesis and comprehensive investigation of single-crystalline Tb$_2$IrAl$_4$Ge$_2$ and Er$_2$IrAl$_4$Ge$_2$, the first Ir-based members of the $Ln_2M$Al$_4$Ge$_2$ family. Both compounds crystallize in the tetragonal Tb$_2$NiAl$_4$Ge$_2$-type structure (space group $I4/mmm$) and exhibit easy-axis magnetic anisotropy with the crystallographic $c$ axis as the preferred magnetization direction. Tb$_2$IrAl$_4$Ge$_2$ undergoes antiferromagnetic ordering below $T_N = 25$ K and develops a sequence of field-induced metamagnetic transitions accompanied by pronounced magnetotransport anomalies, including a nonlinear Hall response. In contrast, Er$_2$IrAl$_4$Ge$_2$ exhibits three successive zero-field magnetic transitions and a substantially richer low-temperature magnetic phase diagram comprising multiple competing field-induced phases confined to relatively modest magnetic fields. The differences between the Tb- and Er-based compounds demonstrate the wide range of magnetic behavior that can be realized within the \\ce{Tb2NiAl4Ge2}-type structure. More broadly, the successful realization of Ir-based $Ln_2M$Al$_4$Ge$_2$ compounds considerably expands the accessible chemical space of this family and opens a route toward the exploration of related $4d$- and $5d$-based aluminogermanides.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "Journal reference: Phys. Rev. Materials 10, 104401 (2026)",
  "arxiv": "2610.01714",
  "author_total": 5,
  "authors": [
    {
      "name": "Karolina Gornicka"
    },
    {
      "name": "Matthew S. Cook"
    },
    {
      "name": "Brenden R. Ortiz"
    },
    {
      "name": "Andrew D. Christianson"
    },
    {
      "name": "Andrew F. May"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/2rfft969c8k61.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.01714",
  "fulltext_url": null,
  "id": "2rfft969c8k61",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.01714",
  "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.mtrl-sci"
    ],
    [
      "arxiv",
      "cond-mat.str-el"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2610.01714",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-01",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/2rfft969c8k61.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:26:03Z",
      "native_id": "2610.01714",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.01714"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mtrl-sci",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Complex magnetic phase diagrams in Tb$_2$IrAl$_4$Ge$_2$ and Er$_2$IrAl$_4$Ge$_2$",
  "title_text": "Complex magnetic phase diagrams in Tb_2IrAl_4Ge_2 and Er_2IrAl_4Ge_2",
  "type": "preprint",
  "updated_at": "2026-10-30T12:26:03Z",
  "url": "https://research.draconitic.com/paper/2rfft969c8k61",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1103/jjjk-3hf3",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}